Systems with a yearly average above an EPA comparison level
10.7%35 of 328 active community water systems
All 328 systems met the sampling requirement for a yearly average. Of those systems, 35 had at least one yearly average above an EPA comparison level and 293 did not.
EPA-based study benchmark: a fixed, unrounded research cutoff used to reproduce EPA’s final UCMR 5 technical-assistance classification based on the April 2024 federal levels. It is not a current federal or state standard. The label does not determine compliance, household exposure, or health risk.
State rules: The labels on this page use fixed research cutoffs based on the April 2024 federal levels. Ohio may use different current standards or guidance. These UCMR 5 results do not determine current federal or state compliance. Find the official Ohio drinking-water program →
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A ZIP code finds possible public water systems for an area; it cannot identify the supplier for a specific home. Confirm the provider using a water bill or utility record.
Compound summary
System counts in Ohio
Each count shows how many included water systems had a yearly average above the named EPA comparison level.
| EPA rounding cutoff | Systems above comparison level | Water systems included | Percent |
|---|---|---|---|
| PFOA: 4 ppt level; unrounded average ≥4.05 ppt after applying EPA rounding | 17 | 328 | 5.2% |
| PFOS: 4 ppt level; unrounded average ≥4.05 ppt after applying EPA rounding | 21 | 328 | 6.4% |
| PFHxS: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 1 | 328 | 0.3% |
| PFNA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 328 | 0.0% |
| HFPO-DA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 328 | 0.0% |
| Hazard Index: 1 level; unrounded index ≥1.5 and at least two detected components | 1 | 328 | 0.3% |
System directory
Community water systems with complete monitoring
“Complete monitoring” means at least one sampling location had every required sample needed to calculate a yearly average. It does not mean every location or home was tested. Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | EPA comparison result |
|---|---|---|---|---|---|
| ADA VILLAGE | OH3300012 | 5,334 | Ground water | 1 | No available average above comparison levels |
| ADAMS COUNTY REGIONAL WD PWS | OH0100012 | 21,810 | Ground water | 1 | No available average above comparison levels |
| AKRON CITY PWS | OH7700011 | 280,000 | Surface water | 1 | No available average above comparison levels |
| ALLIANCE CITY PWS | OH7600011 | 22,232 | Surface water | 1 | No available average above comparison levels |
| AMHERST CITY PWS | OH4700003 | 11,797 | Surface water purchased | 2 | No available average above comparison levels |
| ANDOVER-CAMPLANDS WATER | OH0400212 | 6,009 | Ground water | 1 | No available average above comparison levels |
| AQUA OHIO - ASHTABULA | OH0400711 | 32,342 | Surface water | 1 | No available average above comparison levels |
| AQUA OHIO - AURORA E | OH6700512 | 766 | Ground water purchased | 1 | No available average above comparison levels |
| AQUA OHIO - BLACKLICK | OH2502412 | 7,100 | Ground water | 1 | No available average above comparison levels |
| AQUA OHIO - HUBER RIDGE PWS | OH2502512 | 5,393 | Ground water | 1 | No available average above comparison levels |
| AQUA OHIO - LAKE DARBY | OH2502612 | 3,562 | Ground water | 1 | No available average above comparison levels |
| AQUA OHIO - LAWRENCE COUNTY | OH4400803 | 8,130 | Surface water purchased | 1 | No available average above comparison levels |
| AQUA OHIO - MARION | OH5100414 | 47,102 | Surface water | 1 | No available average above comparison levels |
| AQUA OHIO - MASSILLON PWS | OH7604512 | 95,636 | Ground water | 1 | No available average above comparison levels |
| AQUA OHIO - MASURY | OH7802711 | 4,019 | Surface water purchased | 1 | No available average above comparison levels |
| AQUA OHIO - MENTOR | OH4301511 | 74,500 | Surface water | 1 | No available average above comparison levels |
| AQUA OHIO - STRUTHERS | OH5001611 | 58,551 | Surface water | 1 | No available average above comparison levels |
| AQUA OHIO - TIFFIN | OH7400614 | 20,279 | Surface water | 1 | No available average above comparison levels |
| AQUA OHIO - VILLAGE OF JEFFERSON | OH0401812 | 3,226 | Surface water purchased | 1 | No available average above comparison levels |
| ARCHBOLD VILLAGE | OH2600011 | 5,586 | Surface water | 1 | No available average above comparison levels |
| ASHLAND CITY | OH0300112 | 20,648 | Ground water | 1 | No available average above comparison levels |
| ASHTABULA COUNTY WATER SYSTEM | OH0400803 | 14,757 | Surface water purchased | 1 | No available average above comparison levels |
| ASHVILLE VILLAGE PWS | OH6500012 | 4,529 | Ground water | 1 | No available average above comparison levels |
| ATHENS PWS | OH0500212 | 32,725 | Ground water | 1 | No available average above comparison levels |
| AURORA CITY - CLEVELAND PWS | OH6789112 | 15,852 | Surface water purchased | 1 | No available average above comparison levels |
| AVON CITY PWS | OH4700203 | 23,800 | Surface water purchased | 3 | No available average above comparison levels |
| AVON LAKE CITY PWS | OH4700311 | 23,659 | Surface water | 1 | No available average above comparison levels |
| BARBERTON CITY | OH7700411 | 31,298 | Surface water | 1 | No available average above comparison levels |
| BARNESVILLE, OH | OH0700011 | 6,500 | Surface water | 1 | Above an EPA comparison level |
| BEDFORD CITY PWS | OH1800003 | 13,149 | Surface water purchased | 1 | No available average above comparison levels |
| BELLAIRE PUBLIC WATER SYSTEM | OH0700114 | 4,278 | Surface water | 1 | No available average above comparison levels |
| BELLBROOK WATER WORKS | OH2901112 | 9,475 | Ground water | 1 | Above an EPA comparison level |
| BELLEFONTAINE CITY PWS | OH4600112 | 13,249 | Ground water | 1 | No available average above comparison levels |
| BELLEVUE CITY | OH3900011 | 8,236 | Surface water | 1 | No available average above comparison levels |
| BELMONT CO. SANITARY DISTRICT 3 PWS | OH0700412 | 26,822 | Ground water | 1 | No available average above comparison levels |
| BELPRE CITY PWS | OH8400012 | 6,441 | Ground water | 1 | No available average above comparison levels |
| BEREA CITY PWS | OH1800111 | 18,789 | Surface water | 1 | No available average above comparison levels |
| BETHEL VILLAGE PWS | OH1300116 | 2,620 | Ground water purchased | 1 | Above an EPA comparison level |
| BEXLEY CITY PWS | OH2500103 | 14,250 | Surface water purchased | 2 | No available average above comparison levels |
| BLANCHESTER VILLAGE PWS | OH1400111 | 4,243 | Surface water | 1 | No available average above comparison levels |
| BLUFFTON VILLAGE | OH0200112 | 4,125 | Surface water purchased | 1 | No available average above comparison levels |
| BOWLING GREEN CITY | OH8700311 | 31,578 | Surface water | 1 | No available average above comparison levels |
| BRADFORD VILLAGE PWS | OH1900212 | 2,000 | Ground water | 1 | No available average above comparison levels |
| BROOKVILLE MUNICIPALITY PWS | OH5700203 | 5,923 | Surface water purchased | 1 | No available average above comparison levels |
| BROWN COUNTY RURAL WATER | OH0802012 | 32,090 | Ground water | 1 | No available average above comparison levels |
| BRYAN CITY | OH8600012 | 8,729 | Ground water | 1 | No available average above comparison levels |
| BUCKEYE WATER DISTRICT - OHIO RIVER | OH1502911 | 10,300 | Surface water | 1 | No available average above comparison levels |
| BUCYRUS CITY | OH1700011 | 12,570 | Surface water | 1 | No available average above comparison levels |
| BUTLER CO. WATER DISTRICT 2 PWS | OH0900303 | 116,572 | Surface water purchased | 2 | No available average above comparison levels |
| BYESVILLE | OH3001212 | 5,104 | Groundwater under influence of surface water | 1 | No available average above comparison levels |
| CADIZ VILLAGE PWS | OH3400214 | 3,353 | Surface water | 1 | No available average above comparison levels |
| CALDWELL VILLAGE PWS | OH6100011 | 3,300 | Surface water | 1 | Above an EPA comparison level |
| CAMBRIDGE, CITY OF | OH3000111 | 10,520 | Surface water | 1 | Above an EPA comparison level |
| CANAL FULTON CITY PWS | OH7600912 | 5,323 | Ground water | 1 | No available average above comparison levels |
| CANAL WINCHESTER CITY PWS | OH2500312 | 9,286 | Ground water | 1 | No available average above comparison levels |
| CANFIELD CITY PWS | OH5000503 | 7,706 | Surface water purchased | 1 | Above an EPA comparison level |
| CANTON PUBLIC WATER SYSTEM | OH7608112 | 107,113 | Ground water | 3 | No available average above comparison levels |
| CAREY VILLAGE | OH8800012 | 3,674 | Ground water | 1 | No available average above comparison levels |
| CEDARVILLE UNIVERSITY | OH2903612 | 4,000 | Ground water | 1 | No available average above comparison levels |
| CELINA CITY | OH5400011 | 11,682 | Surface water | 1 | No available average above comparison levels |
| CHAGRIN FALLS VILLAGE PWS | OH1800212 | 4,991 | Surface water purchased | 2 | No available average above comparison levels |
| CHARDON CITY PWS | OH2800412 | 5,247 | Ground water | 1 | No available average above comparison levels |
| CHILLICOTHE CITY PWS | OH7100112 | 21,725 | Ground water | 1 | No available average above comparison levels |
| CHILLICOTHE CORRECTIONAL INSTITUTION | OH7101212 | 9,000 | Ground water | 1 | No available average above comparison levels |
| CINCINNATI PUBLIC WATER SYSTEM | OH3102612 | 750,200 | Surface water | 2 | Above an EPA comparison level |
| CIRCLEVILLE CITY PWS | OH6500412 | 13,927 | Ground water | 1 | No available average above comparison levels |
| CITY OF HEATH PWS | OH4500912 | 10,310 | Ground water | 1 | No available average above comparison levels |
| CLARK COUNTY GREEN MEADOWS 2 PWS | OH1200703 | 3,008 | Ground water purchased | 1 | No available average above comparison levels |
| CLARK COUNTY NORTHRIDGE PWS | OH1201003 | 8,874 | Ground water purchased | 1 | No available average above comparison levels |
| CLARK COUNTY PARK LAYNE PWS | OH1201112 | 4,221 | Ground water | 1 | No available average above comparison levels |
| CLERMONT PUBLIC WATER SYSTEM | OH1302212 | 133,059 | Surface water | 3 | Above an EPA comparison level |
| CLEVELAND PUBLIC WATER SYSTEM | OH1801212 | 1,308,955 | Surface water | 4 | No available average above comparison levels |
| CLEVES VILLAGE PWS | OH3100512 | 6,000 | Ground water | 1 | No available average above comparison levels |
| CLYDE CITY | OH7200211 | 6,325 | Surface water | 1 | No available average above comparison levels |
| COLDWATER VILLAGE | OH5400112 | 4,774 | Ground water | 1 | No available average above comparison levels |
| COLUMBIANA CITY PWS | OH1500312 | 6,727 | Ground water | 1 | No available average above comparison levels |
| COLUMBUS GROVE VILLAGE | OH6900112 | 2,137 | Ground water | 1 | No available average above comparison levels |
| COLUMBUS PUBLIC WATER SYSTEM | OH2504412 | 1,305,946 | Surface water | 3 | No available average above comparison levels |
| COMMERCIAL POINT VILLAGE | OH6503512 | 3,497 | Ground water | 1 | No available average above comparison levels |
| CONNEAUT | OH0400411 | 12,538 | Surface water | 1 | No available average above comparison levels |
| CORTLAND CITY PWS | OH7800512 | 7,105 | Ground water | 3 | No available average above comparison levels |
| COSHOCTON PWS | OH1600012 | 13,537 | Ground water | 1 | No available average above comparison levels |
| CRESTLINE VILLAGE | OH1700112 | 4,525 | Ground water | 1 | No available average above comparison levels |
| CUYAHOGA FALLS CITY PWS | OH7701012 | 51,114 | Ground water | 1 | No available average above comparison levels |
| DAYTON PUBLIC WATER SYSTEM | OH5703512 | 141,407 | Surface water | 2 | Above an EPA comparison level |
| DAYTON VA BLDG 410 | OH5750618 | 125 | Surface water purchased | 1 | Above an EPA comparison level |
| DEFIANCE CITY | OH2000111 | 16,494 | Surface water | 1 | No available average above comparison levels |
| DEL-CO WATER COMPANY, INC. | OH2101412 | 150,000 | Surface water | 3 | No available average above comparison levels |
| DELAWARE CITY PWS | OH2100311 | 43,895 | Surface water | 1 | No available average above comparison levels |
| DELPHOS CITY | OH0200412 | 7,101 | Surface water | 1 | No available average above comparison levels |
| DELTA VILLAGE | OH2600311 | 3,518 | Surface water | 1 | No available average above comparison levels |
| DOVER CITY PWS | OH7900412 | 13,253 | Ground water | 1 | No available average above comparison levels |
| EARNHART HILL WATER DISTRICT PWS | OH6500812 | 10,057 | Ground water | 1 | No available average above comparison levels |
| EAST LIVERPOOL CITY | OH1500811 | 12,586 | Surface water | 1 | No available average above comparison levels |
| EAST PALESTINE VILLAGE PWS | OH1500912 | 4,761 | Ground water | 1 | No available average above comparison levels |
| EATON PUBLIC WATER SYSTEM | OH6801612 | 8,400 | Ground water | 2 | No available average above comparison levels |
| ELIDA VILLAGE | OH0200503 | 4,109 | Surface water purchased | 1 | No available average above comparison levels |
| ELYRIA WATER DEPARTMENT | OH4700411 | 68,000 | Surface water | 1 | No available average above comparison levels |
| ENGLEWOOD CITY PWS | OH5700812 | 13,463 | Ground water | 1 | No available average above comparison levels |
| ERIE CO MARGARETTA DISTRICT | OH2200203 | 5,131 | Surface water purchased | 1 | No available average above comparison levels |
| ERIE CO PERKINS DISTRICT | OH2200603 | 17,241 | Surface water purchased | 2 | No available average above comparison levels |
| FAIRBORN PUBLIC WATER SYSTEM | OH2900612 | 34,620 | Ground water | 1 | No available average above comparison levels |
| FAIRFIELD CITY PWS | OH0900715 | 44,907 | Ground water | 1 | No available average above comparison levels |
| FAIRFIELD COUNTY UTILITIES PWS | OH2301912 | 15,486 | Ground water | 1 | No available average above comparison levels |
| FELICITY VILLAGE PWS | OH1300612 | 1,573 | Ground water | 1 | No available average above comparison levels |
| FINDLAY CITY | OH3200111 | 54,040 | Surface water | 1 | No available average above comparison levels |
| FOSTORIA CITY | OH7400411 | 13,441 | Surface water | 1 | No available average above comparison levels |
| FRANKLIN PUBLIC WATER SYSTEM | OH8300412 | 11,690 | Ground water | 1 | No available average above comparison levels |
| FREMONT CITY | OH7200311 | 18,319 | Surface water | 1 | No available average above comparison levels |
| GAHANNA CITY PWS | OH2501303 | 33,258 | Surface water purchased | 1 | No available average above comparison levels |
| GALION CITY | OH1700211 | 10,453 | Surface water | 1 | No available average above comparison levels |
| GALLIA CO RURAL WATER ASSOCIATION | OH2700012 | 20,995 | Ground water | 1 | Above an EPA comparison level |
| GALLIPOLIS PWS | OH2700112 | 7,134 | Ground water | 1 | Above an EPA comparison level |
| GENEVA CITY PWS | OH0401712 | 5,924 | Surface water purchased | 1 | No available average above comparison levels |
| GEORGETOWN VILLAGE PWS | OH0800503 | 4,331 | Ground water purchased | 1 | No available average above comparison levels |
| GERMANTOWN CITY PWS | OH5701012 | 5,547 | Ground water | 1 | No available average above comparison levels |
| GNADENHUTTEN PWS | OH7900512 | 1,240 | Ground water | 1 | No available average above comparison levels |
| GRANVILLE, VILLAGE OF | OH4500612 | 5,946 | Ground water | 1 | No available average above comparison levels |
| GREENE CO.-NORTHWEST REG WATER | OH2903512 | 41,895 | Ground water | 2 | No available average above comparison levels |
| GREENE COUNTY EASTERN REGIONAL PWS | OH2906103 | 4,800 | Ground water purchased | 1 | No available average above comparison levels |
| GREENFIELD TWP WATER DISTRICT | OH2301812 | 490 | Ground water | 1 | No available average above comparison levels |
| GREENFIELD VILLAGE PWS | OH3600312 | 4,600 | Ground water | 1 | No available average above comparison levels |
| GROVEPORT PWS | OH2501512 | 3,229 | Ground water | 1 | No available average above comparison levels |
| GUERNSEY CO. WATER DEPT. | OH3000603 | 8,891 | Surface water purchased | 1 | Above an EPA comparison level |
| HAMILTON PUBLIC WATER SYSTEM | OH0904012 | 62,447 | Ground water | 2 | No available average above comparison levels |
| HARRISON CITY PWS | OH3100812 | 11,600 | Ground water | 1 | No available average above comparison levels |
| HECLA WATER ASSOCIATION-PLANT PWS | OH4401612 | 34,942 | Surface water purchased | 2 | No available average above comparison levels |
| HICKSVILLE VILLAGE | OH2000212 | 3,600 | Ground water | 1 | No available average above comparison levels |
| HIGHLAND COUNTY WATER COMPANY, INC. | OH3600514 | 28,421 | Ground water | 1 | No available average above comparison levels |
| HILLSBORO CITY | OH3600614 | 6,650 | Surface water | 1 | No available average above comparison levels |
| HUBBARD CITY PWS | OH7801415 | 8,518 | Surface water purchased | 1 | No available average above comparison levels |
| HUBER HEIGHTS PUBLIC WATER SYSTEM | OH5703612 | 43,439 | Ground water | 1 | No available average above comparison levels |
| HUDSON CITY PWS | OH7701612 | 8,385 | Ground water | 1 | No available average above comparison levels |
| HURON CITY | OH2201011 | 6,893 | Surface water | 1 | No available average above comparison levels |
| I-71 AND SR-35 PWS | OH2437412 | 7,685 | Surface water | 1 | No available average above comparison levels |
| INDIAN HILL CITY PWS | OH3101112 | 15,000 | Ground water | 1 | Above an EPA comparison level |
| IRONTON PWS | OH4400711 | 11,129 | Surface water | 1 | No available average above comparison levels |
| JACKSON CO. WATER COMPANY-WTP | OH4002012 | 15,984 | Ground water | 1 | No available average above comparison levels |
| JACKSON, CITY OF | OH4000111 | 9,691 | Surface water | 1 | No available average above comparison levels |
| JACKSON/MILTON METRO WATER DISTRICT PWS | OH5054212 | 3,728 | Surface water purchased | 1 | Above an EPA comparison level |
| JEFFERSON CO W AND S DISTRICT - M | OH4101103 | 13,983 | Surface water purchased | 1 | No available average above comparison levels |
| JEFFERSON CO W AND S DISTRICT- A | OH4100803 | 2,635 | Ground water purchased | 2 | No available average above comparison levels |
| JEFFERSON REGIONAL WATER AUTHORITY | OH5703012 | 4,813 | Ground water | 1 | No available average above comparison levels |
| JEFFERSON WATER AND SEWER DISTRICT PWS | OH2504012 | 11,294 | Ground water | 1 | No available average above comparison levels |
| JOHNSTOWN VILLAGE PWS | OH4501512 | 5,200 | Ground water | 1 | No available average above comparison levels |
| KENT CITY PWS | OH6701812 | 29,662 | Ground water | 1 | No available average above comparison levels |
| KENTON CITY | OH3300612 | 8,360 | Ground water | 1 | No available average above comparison levels |
| KNOX COUNTY WATER AND WASTEWATER PWS | OH4202012 | 7,710 | Ground water | 1 | No available average above comparison levels |
| LAKE COUNTY EAST WATER SUBDISTRICT | OH4302911 | 40,656 | Surface water | 1 | No available average above comparison levels |
| LAKE COUNTY WEST WATER SUBDISTRICT | OH4302411 | 78,379 | Surface water | 1 | No available average above comparison levels |
| LAKEWOOD CITY PWS | OH1801003 | 50,942 | Surface water purchased | 1 | No available average above comparison levels |
| LANCASTER CITY PWS | OH2301012 | 40,400 | Ground water | 2 | No available average above comparison levels |
| LE-AX REGIONAL WATER DISTRICT PWS | OH0501111 | 19,311 | Ground water | 1 | No available average above comparison levels |
| LEADING CREEK CONSERVANCY DISTRICT | OH5300012 | 6,663 | Ground water | 1 | Above an EPA comparison level |
| LEBANON CITY | OH8304112 | 20,700 | Surface water purchased | 1 | No available average above comparison levels |
| LEBANON CORRECTIONAL INSTITUTION | OH8301012 | 3,410 | Ground water | 1 | No available average above comparison levels |
| LEXINGTON VILLAGE | OH7002212 | 4,825 | Ground water | 1 | No available average above comparison levels |
| LIMA CITY | OH0200811 | 65,619 | Surface water | 1 | No available average above comparison levels |
| LITTLE HOCKING WATER ASSOCIATION, INC. | OH8400212 | 9,892 | Ground water | 1 | No available average above comparison levels |
| LOCKLAND VILLAGE PWS | OH3101212 | 3,486 | Ground water | 1 | No available average above comparison levels |
| LOGAN, CITY OF | OH3700612 | 6,704 | Ground water | 1 | No available average above comparison levels |
| LONDON CITY PWS | OH4900712 | 10,256 | Ground water | 1 | No available average above comparison levels |
| LORAIN CITY PWS | OH4700711 | 64,152 | Surface water | 1 | No available average above comparison levels |
| LORDSTOWN VILLAGE PWS | OH7804403 | 3,515 | Surface water purchased | 1 | Above an EPA comparison level |
| LOUISVILLE CITY PWS | OH7603012 | 9,186 | Ground water | 1 | No available average above comparison levels |
| LOVELAND CITY PWS | OH1300812 | 12,800 | Ground water | 1 | Above an EPA comparison level |
| MADISON COUNTY SSWD WATER DISTRICT 1 | OH4901012 | 5,176 | Ground water | 1 | No available average above comparison levels |
| MALVERN VILLAGE PWS | OH1000112 | 1,200 | Ground water | 1 | No available average above comparison levels |
| MANSFIELD CITY | OH7002914 | 51,000 | Surface water | 1 | No available average above comparison levels |
| MARIETTA CITY PWS | OH8400412 | 18,707 | Ground water | 1 | Above an EPA comparison level |
| MARTINS FERRY PUBLIC WATER SYSTEM | OH0701212 | 6,980 | Ground water | 1 | Above an EPA comparison level |
| MARYSVILLE CITY PWS | OH8000314 | 25,571 | Surface water | 1 | No available average above comparison levels |
| MAUMEE CITY | OH4800603 | 14,286 | Surface water purchased | 1 | No available average above comparison levels |
| MAYSVILLE REGIONAL WATER | OH6001411 | 6,540 | Ground water purchased | 1 | No available average above comparison levels |
| MCDONALD VILLAGE PWS | OH7802003 | 4,236 | Surface water purchased | 1 | Above an EPA comparison level |
| MEDINA CITY PWS | OH5200514 | 25,956 | Surface water purchased | 1 | No available average above comparison levels |
| MEDINA CO/NORTHWEST PWS | OH5201903 | 46,324 | Surface water purchased | 1 | No available average above comparison levels |
| MEDINA CO/SOUTHERN WATER DIST PWS | OH5260712 | 4,708 | Ground water | 2 | No available average above comparison levels |
| MIAMI CO-CAMP TROY PWS | OH5502503 | 3,742 | Ground water purchased | 1 | No available average above comparison levels |
| MIAMISBURG CITY PWS | OH5701212 | 19,790 | Ground water | 1 | No available average above comparison levels |
| MID-OHIO WSD PLAIN CITY WTP | OH4901112 | 4,467 | Ground water | 1 | No available average above comparison levels |
| MIDDLETOWN CITY PWS | OH0901712 | 51,229 | Ground water | 1 | No available average above comparison levels |
| MILFORD CITY PWS | OH1301012 | 6,700 | Ground water | 1 | Above an EPA comparison level |
| MILLERSBURG VILLAGE PWS | OH3800912 | 3,151 | Ground water | 1 | No available average above comparison levels |
| MINERVA VILLAGE PWS | OH7603812 | 3,684 | Ground water | 1 | No available average above comparison levels |
| MONROE CITY PWS, OH | OH0902012 | 15,600 | Surface water purchased | 1 | No available average above comparison levels |
| MONROE WATER SYSTEMS | OH5600812 | 4,334 | Ground water | 1 | No available average above comparison levels |
| MONTGOMERY COUNTY WATER SERVICES 1 PWS | OH5701315 | 150,207 | Surface water purchased | 1 | Above an EPA comparison level |
| MONTGOMERY COUNTY WATER SERVICES 2 PWS | OH5701503 | 83,033 | Surface water purchased | 1 | No available average above comparison levels |
| MONTPELIER VILLAGE | OH8600912 | 4,280 | Ground water | 1 | No available average above comparison levels |
| MOUNT ORAB VILLAGE PWS | OH0801011 | 6,607 | Surface water | 1 | No available average above comparison levels |
| MOUNT VERNON CITY PWS | OH4200812 | 16,990 | Ground water | 1 | No available average above comparison levels |
| MT GILEAD VILLAGE PWS | OH5900712 | 3,503 | Ground water | 1 | No available average above comparison levels |
| MUNROE FALLS CITY PWS | OH7702703 | 5,042 | Ground water purchased | 1 | No available average above comparison levels |
| MUSKINGUM COUNTY WATER - SE | OH6000412 | 21,540 | Ground water | 1 | No available average above comparison levels |
| NAPOLEON CITY | OH3500811 | 8,858 | Surface water | 1 | No available average above comparison levels |
| NAWA | OH5553612 | 29,974 | Ground water | 1 | No available average above comparison levels |
| NELSONVILLE PWS | OH0501214 | 6,656 | Ground water | 1 | No available average above comparison levels |
| NEW BREMEN VILLAGE | OH0600512 | 3,034 | Ground water | 1 | No available average above comparison levels |
| NEW CARLISLE CITY PWS | OH1203312 | 5,800 | Ground water | 1 | No available average above comparison levels |
| NEW LEBANON VILLAGE PWS | OH5701812 | 3,770 | Ground water | 1 | No available average above comparison levels |
| NEW LEXINGTON | OH6400411 | 5,161 | Surface water | 1 | No available average above comparison levels |
| NEW MIAMI VILLAGE PWS | OH0902112 | 3,200 | Ground water | 1 | No available average above comparison levels |
| NEW PHILADELPHIA CITY PWS | OH7900812 | 17,410 | Ground water | 1 | No available average above comparison levels |
| NEWARK CITY PWS | OH4502314 | 49,934 | Surface water | 1 | No available average above comparison levels |
| NEWCOMERSTOWN VILLAGE PWS | OH7900912 | 3,882 | Ground water | 1 | No available average above comparison levels |
| NEWTON FALLS CITY | OH7802311 | 6,109 | Surface water | 1 | Above an EPA comparison level |
| NORTH BALTIMORE VILLAGE | OH8701611 | 3,432 | Surface water | 1 | No available average above comparison levels |
| NORTH CANTON CITY PWS | OH7604312 | 24,747 | Ground water | 1 | No available average above comparison levels |
| NORTH RIDGEVILLE CITY PWS | OH4700803 | 29,465 | Surface water purchased | 2 | No available average above comparison levels |
| NORTHERN OHIO RURAL WATER | OH3902403 | 18,224 | Surface water purchased | 4 | No available average above comparison levels |
| NORTHERN OHIO RURAL WATER - NW DISTRICT | OH2201803 | 6,409 | Surface water purchased | 1 | No available average above comparison levels |
| NORTHERN PERRY CO.WATER #2 | OH6402703 | 1,802 | Ground water purchased | 1 | No available average above comparison levels |
| NORTHWEST REGIONAL WATER DISTRICT | OH7300003 | 11,059 | Ground water purchased | 1 | No available average above comparison levels |
| NORTHWESTERN W AND SD - WTLN 200 | OH8704203 | 9,629 | Surface water purchased | 1 | No available average above comparison levels |
| NORTHWESTERN W AND SD -TOLEDO SVCE AREA | OH8752812 | 19,758 | Surface water purchased | 1 | No available average above comparison levels |
| NORTHWESTERN W AND SD- PORTAGE | OH8704103 | 4,776 | Surface water purchased | 1 | No available average above comparison levels |
| NORW - SOUTH DISTRICT | OH3946712 | 5,226 | Surface water purchased | 1 | No available average above comparison levels |
| NORWALK CITY | OH3901111 | 17,466 | Surface water | 1 | No available average above comparison levels |
| NORWOOD CITY PWS | OH3101703 | 19,870 | Surface water purchased | 1 | No available average above comparison levels |
| OAK HARBOR VILLAGE | OH6202603 | 4,400 | Surface water purchased | 1 | No available average above comparison levels |
| OAKDALE WATER DISTRICT | OH6402403 | 250 | Ground water purchased | 1 | No available average above comparison levels |
| OAKWOOD CITY PWS | OH5701915 | 9,572 | Ground water | 2 | No available average above comparison levels |
| OBERLIN WATER DEPARTMENT | OH4700911 | 8,600 | Surface water | 1 | No available average above comparison levels |
| ODRC-PICKAWAY CORRECTION PWS | OH6501712 | 3,376 | Ground water | 1 | No available average above comparison levels |
| ONTARIO CITY | OH7003512 | 6,756 | Ground water | 1 | No available average above comparison levels |
| OREGON CITY, OH | OH4800911 | 19,950 | Surface water | 1 | No available average above comparison levels |
| ORRVILLE CITY PWS | OH8502712 | 8,452 | Ground water | 1 | No available average above comparison levels |
| OTTAWA COUNTY REGIONAL WATER DISTRICT | OH6205011 | 20,428 | Surface water | 1 | No available average above comparison levels |
| OTTAWA VILLAGE | OH6900711 | 4,393 | Surface water | 1 | No available average above comparison levels |
| OXFORD CITY PWS | OH0902312 | 24,000 | Ground water | 1 | No available average above comparison levels |
| PAINESVILLE CITY PWS | OH4301611 | 31,728 | Surface water | 1 | No available average above comparison levels |
| PATASKALA CITY | OH4502512 | 9,900 | Ground water | 2 | No available average above comparison levels |
| PAULDING VILLAGE | OH6300411 | 3,605 | Surface water | 1 | No available average above comparison levels |
| PERRYSBURG CITY WATER | OH8701803 | 27,000 | Surface water purchased | 1 | No available average above comparison levels |
| PICKERINGTON CITY PWS | OH2301512 | 19,141 | Ground water | 1 | No available average above comparison levels |
| PIKE WATER, INC.-PLANT PWS | OH6602412 | 15,487 | Ground water | 1 | No available average above comparison levels |
| PIQUA CITY PWS | OH5501211 | 20,354 | Surface water | 1 | No available average above comparison levels |
| PORT CLINTON CITY | OH6203211 | 6,500 | Surface water purchased | 1 | No available average above comparison levels |
| PORTAGE COUNTY WATER RESOURCES | OH6702812 | 8,606 | Ground water | 2 | No available average above comparison levels |
| PORTSMOUTH PUBLIC WATER SYSTEM | OH7300111 | 40,475 | Surface water | 1 | No available average above comparison levels |
| PUTNAM COMMUNITY WATER ASSOCIATION PWS | OH8400712 | 2,744 | Ground water | 1 | Above an EPA comparison level |
| RAVENNA CITY PWS | OH6703211 | 16,000 | Surface water | 1 | No available average above comparison levels |
| READING CITY PWS | OH3101812 | 9,506 | Surface water purchased | 1 | No available average above comparison levels |
| REYNOLDSBURG CITY PWS | OH2503203 | 37,847 | Surface water purchased | 2 | No available average above comparison levels |
| RITTMAN CITY PWS | OH8503012 | 6,491 | Ground water | 2 | No available average above comparison levels |
| ROSS COUNTY WATER CO INC PWS | OH7101412 | 35,345 | Ground water | 2 | No available average above comparison levels |
| RURAL LORAIN CO. WATER A | OH4701803 | 73,125 | Surface water purchased | 3 | No available average above comparison levels |
| SALEM CITY, OH | OH1502011 | 16,850 | Surface water | 1 | No available average above comparison levels |
| SANDUSKY CITY | OH2201411 | 25,793 | Surface water | 1 | No available average above comparison levels |
| SANITARY DISTRICT #4 | OH2501003 | 8,575 | Surface water purchased | 1 | No available average above comparison levels |
| SCIOTO CO. REGIONAL WATER DISTRICT #1 | OH7300212 | 13,820 | Ground water | 1 | No available average above comparison levels |
| SCIOTO WATER, INC.-ROSE HILL | OH7300303 | 8,861 | Ground water | 1 | No available average above comparison levels |
| SCIOTO WATER, INC.-SUGAR CAMP | OH7300903 | 6,458 | Ground water | 1 | No available average above comparison levels |
| SCRANTON WOODS | OH2803712 | 114 | Ground water | 1 | No available average above comparison levels |
| SEBRING VILLAGE PWS | OH5001911 | 6,058 | Surface water | 1 | No available average above comparison levels |
| SHADYSIDE PUBLIC WATER SYSTEM | OH0701612 | 3,689 | Ground water | 1 | Above an EPA comparison level |
| SHEFFIELD LAKE CITY PWS | OH4701103 | 9,108 | Surface water purchased | 1 | No available average above comparison levels |
| SHEFFIELD VILLAGE PWS | OH4701203 | 4,165 | Surface water purchased | 1 | No available average above comparison levels |
| SHELBY CITY | OH7004511 | 9,453 | Surface water | 1 | No available average above comparison levels |
| SIDNEY CITY PWS | OH7501214 | 20,614 | Surface water | 1 | No available average above comparison levels |
| SOUTH LEBANON VILLAGE PWS | OH8301312 | 3,891 | Surface water purchased | 1 | No available average above comparison levels |
| SOUTH POINT VILLAGE | OH4401212 | 4,133 | Ground water | 1 | No available average above comparison levels |
| SOUTHERN PERRY CO-CONGO | OH6401603 | 4,029 | Ground water purchased | 1 | No available average above comparison levels |
| SOUTHWEST LICKING COMMUNITY WATER | OH4505412 | 17,818 | Ground water | 1 | No available average above comparison levels |
| SOUTHWEST REGIONAL WATER DISTRICT | OH0903912 | 42,856 | Ground water | 2 | No available average above comparison levels |
| SPRINGBORO PWS | OH8301412 | 19,263 | Ground water | 1 | Above an EPA comparison level |
| SPRINGFIELD CITY PWS | OH1204412 | 60,680 | Ground water | 1 | No available average above comparison levels |
| ST MARYS CITY | OH0600612 | 9,356 | Ground water | 1 | No available average above comparison levels |
| ST. CLAIRSVILLE, CITY OF PWS | OH0701516 | 5,097 | Surface water | 1 | Above an EPA comparison level |
| STARK COUNTY WATER DISTRICT | OH7607303 | 6,690 | Ground water purchased | 1 | No available average above comparison levels |
| STEUBENVILLE, CITY OF | OH4102411 | 17,000 | Surface water | 1 | No available average above comparison levels |
| STOW PUBLIC WATER SYSTEM | OH7704503 | 35,437 | Surface water purchased | 1 | No available average above comparison levels |
| STREETSBORO CITY PWS | OH6705003 | 15,105 | Ground water purchased | 1 | No available average above comparison levels |
| SUNDAY CREEK VALLEY WATER PWS | OH0501503 | 5,451 | Ground water purchased | 1 | No available average above comparison levels |
| SWANTON VILLAGE | OH2601011 | 3,855 | Surface water | 1 | No available average above comparison levels |
| SYLVANIA CITY | OH4801303 | 21,618 | Surface water purchased | 1 | No available average above comparison levels |
| TALLMADGE CITY PWS | OH7704703 | 18,394 | Surface water purchased | 1 | No available average above comparison levels |
| TATE-MONROE WATER ASSOCIATION PWS | OH1301312 | 24,092 | Ground water | 2 | No available average above comparison levels |
| TCMSD-WILKSHIRE HILLS PWS | OH7901612 | 6,587 | Ground water | 1 | No available average above comparison levels |
| TIMBERLAKE WATER SYSTEM | OH2501812 | 1,600 | Ground water | 1 | No available average above comparison levels |
| TOLEDO, CITY OF | OH4801411 | 360,000 | Surface water | 1 | No available average above comparison levels |
| TORONTO PWS | OH4102811 | 5,676 | Surface water | 1 | No available average above comparison levels |
| TRENTON CITY PWS | OH0903012 | 13,012 | Ground water | 1 | No available average above comparison levels |
| TROTWOOD CITY PWS | OH5702403 | 9,000 | Surface water purchased | 1 | No available average above comparison levels |
| TROY CITY PWS, OH | OH5501612 | 26,305 | Ground water | 1 | No available average above comparison levels |
| TRUMBULL CO. - BAZETTA/CHAMPION | OH7804303 | 8,270 | Surface water purchased | 1 | No available average above comparison levels |
| TRUMBULL CO.-HOWLAND TWP PWS | OH7806303 | 6,396 | Surface water purchased | 1 | Above an EPA comparison level |
| TRUMBULL CO.-SOUTHEAST PWS | OH7803203 | 9,931 | Surface water purchased | 1 | Above an EPA comparison level |
| TUPPER PLAINS/CHESTER WATER DISTRICT | OH5300612 | 16,087 | Ground water | 1 | No available average above comparison levels |
| TWIN CITY WATER AND SEWER DISTRICT PWS | OH7901711 | 9,224 | Ground water | 1 | No available average above comparison levels |
| UNION CITY PWS | OH5702512 | 7,000 | Ground water | 2 | No available average above comparison levels |
| UPPER SANDUSKY CITY | OH8800511 | 6,698 | Surface water | 1 | No available average above comparison levels |
| URBANA CITY PWS | OH1101212 | 11,428 | Ground water | 2 | No available average above comparison levels |
| VAN WERT CITY | OH8100611 | 10,846 | Surface water | 1 | No available average above comparison levels |
| VERMILION CITY | OH2201511 | 10,594 | Surface water | 1 | No available average above comparison levels |
| WADSWORTH CITY PWS | OH5201712 | 24,356 | Ground water | 1 | No available average above comparison levels |
| WAPAKONETA CITY | OH0600712 | 11,000 | Ground water | 1 | No available average above comparison levels |
| WARREN CITY PWS | OH7803811 | 49,130 | Surface water | 1 | No available average above comparison levels |
| WARREN CO. RICHARD RENNEKER PWS | OH8301512 | 81,975 | Ground water | 1 | No available average above comparison levels |
| WARREN CO. SOCIALVILLE PWS | OH8304203 | 13,216 | Surface water purchased | 1 | No available average above comparison levels |
| WARREN COMM W AND S ASSN 2 | OH8402703 | 7,215 | Ground water | 1 | Above an EPA comparison level |
| WASHINGTON COURT HOUSE PWS | OH2400714 | 14,100 | Surface water | 1 | No available average above comparison levels |
| WATERFORD WATER/SEWER ASSOCIATION | OH8401112 | 770 | Ground water | 1 | No available average above comparison levels |
| WATERVILLE CITY | OH4801503 | 6,500 | Surface water purchased | 1 | No available average above comparison levels |
| WAUSEON CITY | OH2600111 | 7,568 | Surface water | 1 | No available average above comparison levels |
| WAVERLY CITY PWS | OH6600912 | 4,433 | Ground water | 1 | No available average above comparison levels |
| WAYNESVILLE VILLAGE PWS | OH8302012 | 4,100 | Ground water | 1 | No available average above comparison levels |
| WAYNOKA REGIONAL WATER AND SEWER DIST | OH0800811 | 2,428 | Surface water | 3 | No available average above comparison levels |
| WELLINGTON VILLAGE PWS | OH4701511 | 4,802 | Surface water | 1 | No available average above comparison levels |
| WELLSTON CITY PWS | OH4001912 | 5,846 | Surface water | 2 | No available average above comparison levels |
| WEST CARROLLTON CITY PWS | OH5702812 | 8,361 | Ground water | 1 | No available average above comparison levels |
| WEST JEFFERSON VILLAGE PWS | OH4902012 | 4,488 | Ground water | 1 | No available average above comparison levels |
| WEST MILTON VILLAGE PWS | OH5501711 | 4,890 | Ground water purchased | 1 | No available average above comparison levels |
| WESTERN WATER COMPANY | OH8300512 | 39,508 | Surface water purchased | 2 | Above an EPA comparison level |
| WESTERVILLE CITY PWS | OH2503411 | 39,000 | Surface water | 1 | No available average above comparison levels |
| WHITEHOUSE VILLAGE | OH4801612 | 5,200 | Surface water purchased | 2 | No available average above comparison levels |
| WILLARD CITY | OH3901511 | 7,099 | Surface water | 1 | No available average above comparison levels |
| WILMINGTON CITY PWS | OH1401211 | 12,401 | Surface water | 1 | No available average above comparison levels |
| WINTERSVILLE VILLAGE PWS | OH4103003 | 3,924 | Surface water purchased | 1 | No available average above comparison levels |
| WOOSTER CITY PWS | OH8504512 | 26,618 | Ground water | 1 | No available average above comparison levels |
| WRIGHT STATE UNIVERSITY | OH2902012 | 8,948 | Ground water | 1 | No available average above comparison levels |
| WRIGHT-PATTERSON AFB AREA A PWS | OH2903412 | 16,551 | Ground water | 4 | Above an EPA comparison level |
| WRIGHT-PATTERSON AFB AREA B PWS | OH2903312 | 11,034 | Ground water | 2 | Above an EPA comparison level |
| WYOMING CITY PWS | OH3102212 | 9,700 | Ground water | 1 | No available average above comparison levels |
| XENIA CITY PWS | OH2902812 | 29,000 | Ground water | 1 | No available average above comparison levels |
| YELLOW SPRINGS VILLAGE PWS | OH2903012 | 3,761 | Ground water | 1 | Above an EPA comparison level |
| ZANESVILLE PWS | OH6002712 | 29,381 | Ground water | 1 | No available average above comparison levels |
How the count works
What is included
Each active community water system with enough required samples for a yearly average is counted once, even if it is linked with several ZIP codes. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system.