Systems with a yearly average at or above an EPA-based study benchmark
10.2%30 of 293 active community water systems
All 293 systems had enough required samples to calculate a yearly average. 30 had at least one yearly average at or above a study benchmark; 263 did not.
EPA-based study benchmark: the unrounded cutoff this research uses to reproduce EPA’s January 2026 technical-assistance classification around the April 2024 federal levels. It is not a current standard or compliance finding and cannot determine household exposure or health risk.
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Find your water system
ZIP codes are used only to route visitors to public water systems that reported serving them. Confirm the actual provider using a water bill or utility record.
Compound summary
System counts in New York
Each count shows how many included water systems had a yearly average at or above the named study benchmark.
| Study benchmark | Systems at or above benchmark | Water systems included | Percent |
|---|---|---|---|
| PFOA: 4.05 ppt study benchmark (reproduces EPA classification around 4 ppt) | 24 | 293 | 8.2% |
| PFOS: 4.05 ppt study benchmark (reproduces EPA classification around 4 ppt) | 11 | 293 | 3.8% |
| PFHxS: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 1 | 293 | 0.3% |
| PFNA: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 1 | 293 | 0.3% |
| HFPO-DA: 15 ppt study benchmark (reproduces EPA classification around 10 ppt) | 0 | 293 | 0.0% |
| Hazard Index: 1.5 study benchmark with at least two detected components (reproduces EPA classification around 1) | 2 | 293 | 0.7% |
System directory
Community water systems with complete monitoring
“Complete monitoring” means at least one sampling location had all required samples needed for a yearly average. Each PWSID appears once, preventing double counting across ZIP associations.
| Public water system | PWSID | Population served | Primary source | Sampling locations | Study benchmark result |
|---|---|---|---|---|---|
| ALBANY CITY | NY0100189 | 98,000 | Surface water | 1 | Below all study benchmarks |
| ALBERTSON WD | NY2902815 | 13,500 | Ground water | 4 | At or above a study benchmark |
| ALBION VILLAGE | NY3600596 | 6,000 | Surface water | 1 | Below all study benchmarks |
| ALFRED STATE COLLEGE | NY0220581 | 3,600 | Ground water purchased | 1 | Below all study benchmarks |
| AMSTERDAM (C) | NY2800136 | 20,700 | Surface water | 1 | Below all study benchmarks |
| ARCADIA-LYONS CSA | NY5821130 | 5,800 | Surface water purchased | 1 | Below all study benchmarks |
| ARROW PARK INC. | NY3503536 | 83 | Ground water | 1 | At or above a study benchmark |
| AUBURN, NY | NY0501710 | 27,179 | Surface water | 1 | Below all study benchmarks |
| BALDWINSVILLE VILLAGE | NY3304307 | 9,200 | Ground water | 2 | Below all study benchmarks |
| BALLSTON SPA VILLAGE | NY4500162 | 6,541 | Ground water | 1 | Below all study benchmarks |
| BATAVIA CITY | NY1800544 | 15,475 | Surface water | 1 | Below all study benchmarks |
| BATAVIA CONSOLIDATED W.D. | NY1800554 | 5,445 | Surface water purchased | 2 | Below all study benchmarks |
| BATH VILLAGE CONSOLIDATED SAMPLING AREA | NY5001206 | 5,400 | Ground water | 4 | Below all study benchmarks |
| BAYVILLE (V) | NY2902816 | 6,700 | Ground water | 3 | Below all study benchmarks |
| BEACON CITY | NY1302760 | 14,370 | Surface water | 2 | Below all study benchmarks |
| BEDFORD CONSOLIDATED W.D. | NY5903419 | 9,056 | Surface water purchased | 2 | Below all study benchmarks |
| BETHLEHEM WD NO 1 | NY0100191 | 31,000 | Surface water | 3 | Below all study benchmarks |
| BETHPAGE WD | NY2902817 | 33,000 | Ground water | 5 | Below all study benchmarks |
| BIG FLATS WATER DISTRICT 5 | NY0701011 | 8,489 | Ground water | 3 | Below all study benchmarks |
| BINGHAMTON, CITY OF | NY0301651 | 47,600 | Surface water | 2 | At or above a study benchmark |
| BRIARCLIFF MANOR VILLAGE | NY5903420 | 9,190 | Surface water purchased | 1 | Below all study benchmarks |
| BRINKERHOFF WATER DISTRICT | NY1302766 | 3,788 | Ground water | 1 | At or above a study benchmark |
| BRISTOL HARBOUR WATER CORP | NY3400784 | 835 | Surface water | 1 | Below all study benchmarks |
| BRISTOL WD #1 | NY3430041 | 203 | Surface water purchased | 1 | Below all study benchmarks |
| BROCKPORT VILLAGE | NY2701039 | 25,918 | Surface water purchased | 1 | Below all study benchmarks |
| BROOKHAVEN NATIONAL LABS | NY5111891 | 3,500 | Ground water | 4 | Below all study benchmarks |
| BRUNSWICK CONSOLIDATED WATER DISTRICT | NY4110144 | 7,050 | Surface water purchased | 1 | Below all study benchmarks |
| BURNT HILLS-BALLSTON LK WD | NY4505658 | 10,000 | Surface water purchased | 2 | Below all study benchmarks |
| CAMBRIA WATER DISTRICT | NY3100557 | 5,839 | Surface water purchased | 1 | Below all study benchmarks |
| CANANDAIGUA CITY | NY3401150 | 11,264 | Surface water | 1 | Below all study benchmarks |
| CANANDAIGUA TOWN CONS. WD | NY3430008 | 6,800 | Surface water purchased | 1 | Below all study benchmarks |
| CANANDAIGUA-FARMINGTON CONSOLIDATED W.D. | NY3401151 | 13,000 | Surface water purchased | 1 | Below all study benchmarks |
| CANANDAIGUA-HOPEWELL CONSOLIDATED WD | NY3411948 | 3,781 | Surface water purchased | 2 | Below all study benchmarks |
| CANTON VILLAGE | NY4404381 | 7,055 | Ground water | 5 | Below all study benchmarks |
| CARLE PLACE WD | NY2902818 | 9,005 | Ground water | 3 | Below all study benchmarks |
| CARMEL WD 2 | NY3903641 | 5,000 | Surface water | 1 | Below all study benchmarks |
| CARTHAGE VILLAGE | NY2202334 | 3,600 | Surface water | 1 | Below all study benchmarks |
| CATSKILL VILLAGE | NY1900026 | 8,000 | Surface water | 1 | Below all study benchmarks |
| CATTARAUGUS CWS | 020000008 | 4,999 | Surface water purchased | 2 | Below all study benchmarks |
| CAZENOVIA VILLAGE | NY2602371 | 2,900 | Ground water | 1 | Below all study benchmarks |
| CHENANGO CONSOLIDATED WD #1 | NY0301653 | 9,200 | Ground water | 6 | At or above a study benchmark |
| CHESTER VILLAGE | NY3503524 | 3,448 | Surface water | 2 | At or above a study benchmark |
| CLARENDON TOWN WDS | NY3630023 | 2,482 | Surface water purchased | 1 | Below all study benchmarks |
| CLAY WDS | NY3304344 | 16,000 | Surface water purchased | 1 | Below all study benchmarks |
| CLIFTON PARK WATER AUTHORITY | NY4500175 | 35,000 | Surface water purchased | 6 | Below all study benchmarks |
| CLINTON CORRECTIONAL FACILITY | NY0904192 | 3,001 | Ground water | 1 | Below all study benchmarks |
| COBLESKILL VILLAGE | NY4700094 | 4,678 | Surface water | 1 | Below all study benchmarks |
| COHOES CITY | NY0100192 | 18,447 | Surface water | 1 | Below all study benchmarks |
| COLLINS/GOWANDA CORRECTIONAL FACILITIES | NY1415379 | 1,512 | Ground water | 1 | Below all study benchmarks |
| COLONIE VILLAGE | NY0100194 | 8,030 | Surface water purchased | 1 | Below all study benchmarks |
| CORINTH VILLAGE | NY4500164 | 2,283 | Groundwater under influence of surface water | 1 | Below all study benchmarks |
| CORNELL UNIVERSITY | NY5417686 | 31,581 | Surface water | 1 | Below all study benchmarks |
| CORNING CITY | NY5001209 | 10,300 | Ground water | 2 | At or above a study benchmark |
| CORNWALL-ON-HUDSON | NY3503526 | 9,700 | Surface water | 2 | Below all study benchmarks |
| CORTLAND (C) | NY1101754 | 20,095 | Ground water | 2 | Below all study benchmarks |
| CORTLANDT CONSOLIDATED WD | NY5903423 | 28,369 | Surface water purchased | 1 | Below all study benchmarks |
| CORTLANDVILLE TOWN WATER | NY1101755 | 4,300 | Ground water | 2 | Below all study benchmarks |
| COXSACKIE VILLAGE | NY1900027 | 4,010 | Surface water | 1 | Below all study benchmarks |
| CROTON-ON-HUDSON VILLAGE | NY5903425 | 8,000 | Ground water | 1 | Below all study benchmarks |
| DELHI VILLAGE | NY1200257 | 3,833 | Ground water | 2 | Below all study benchmarks |
| DEWITT WDS - NORTH | NY3316112 | 13,600 | Surface water purchased | 1 | Below all study benchmarks |
| DEWITT WDS - SOUTH | NY3304343 | 16,200 | Surface water purchased | 2 | Below all study benchmarks |
| DIX HILLS WATER DISTRICT | NY5103276 | 34,522 | Ground water | 8 | Below all study benchmarks |
| DUNKIRK CITY | NY0600360 | 12,743 | Surface water | 1 | Below all study benchmarks |
| EAST AURORA VILLAGE | NY1400433 | 6,610 | Surface water purchased | 1 | Below all study benchmarks |
| EAST GREENBUSH GENERAL W.D. | NY4100051 | 15,843 | Surface water purchased | 1 | Below all study benchmarks |
| EAST HERKIMER WATER DISTRICT | NY2102300 | 1,024 | Surface water purchased | 1 | Below all study benchmarks |
| ECWA DIRECT | NY1400443 | 313,380 | Surface water | 2 | Below all study benchmarks |
| ELMA WATER DISTRICT NO. 1 | NY1420549 | 10,287 | Surface water purchased | 1 | Below all study benchmarks |
| ELMIRA WATER BOARD | NY0701008 | 54,000 | Surface water | 1 | Below all study benchmarks |
| ELMSFORD VILLAGE | NY5903427 | 5,293 | Surface water purchased | 1 | Below all study benchmarks |
| EMPIRE/RIPLEY HILL MOBILE HOME PARK | NY1100634 | 64 | Ground water | 1 | Below all study benchmarks |
| ENDICOTT MUNICIPAL WATER WORKS | NY0301665 | 45,000 | Ground water | 1 | Below all study benchmarks |
| FAIR HAVEN VILLAGE | NY0501717 | 1,001 | Ground water | 2 | Below all study benchmarks |
| FALLSBURG WHO-LS-SF | NY5203324 | 7,850 | Ground water | 10 | Below all study benchmarks |
| FISHKILL VILLAGE | NY1302765 | 4,101 | Ground water | 1 | Below all study benchmarks |
| FORT DRUM | NY2212214 | 34,000 | Surface water purchased | 2 | Below all study benchmarks |
| FORT EDWARD VILLAGE | NY5700119 | 3,300 | Surface water | 1 | Below all study benchmarks |
| FORT PLAIN (V) WATER WORKS | NY2800139 | 2,250 | Surface water | 1 | Below all study benchmarks |
| FRANKLIN SQUARE WD | NY2902822 | 20,000 | Ground water | 3 | Below all study benchmarks |
| FREDONIA VILLAGE | NY0600364 | 9,585 | Surface water | 1 | Below all study benchmarks |
| FREEPORT (V) | NY2902823 | 45,000 | Ground water | 3 | Below all study benchmarks |
| FRIENDSHIP TOWN WATER DISTRICT | NY0200319 | 1,380 | Ground water | 2 | Below all study benchmarks |
| FULTON CITY | NY3704355 | 16,600 | Surface water purchased | 1 | Below all study benchmarks |
| GARDEN CITY (V) | NY2902824 | 23,272 | Ground water | 6 | At or above a study benchmark |
| GARDEN CITY PARK WD | NY2902825 | 18,000 | Ground water | 5 | At or above a study benchmark |
| GENEVA CITY | NY3401156 | 13,334 | Surface water | 1 | Below all study benchmarks |
| GENEVA WD #2 CSA | NY3404514 | 2,680 | Ground water | 1 | Below all study benchmarks |
| GLASCO WATER DISTRICT | NY5503367 | 4,071 | Surface water purchased | 1 | Below all study benchmarks |
| GLEN COVE CITY | NY2902826 | 28,000 | Ground water | 4 | At or above a study benchmark |
| GLENS FALLS CITY | NY5600104 | 14,000 | Surface water | 1 | Below all study benchmarks |
| GLENVILLE WD #11 | NY4600091 | 15,000 | Ground water | 1 | Below all study benchmarks |
| GLOVERSVILLE (C) WATER WORKS | NY1700018 | 17,991 | Surface water | 1 | Below all study benchmarks |
| GORHAM TOWN WD | NY3401170 | 3,420 | Surface water | 1 | Below all study benchmarks |
| GOSHEN VILLAGE | NY3503528 | 5,600 | Surface water | 2 | Below all study benchmarks |
| GOUVERNEUR | NY4404385 | 4,263 | Surface water | 2 | Below all study benchmarks |
| GRAND ISLAND TOWN WATER DEPT. | NY1400451 | 19,500 | Surface water | 1 | Below all study benchmarks |
| GREAT MEADOW/WASHINGTON CORR. FACILITIES | NY5704191 | 1,500 | Surface water | 1 | Below all study benchmarks |
| GREATER PLATTSBURGH WATER DISTRICT | NY0900220 | 11,162 | Ground water | 1 | Below all study benchmarks |
| GREENBURGH CONSOLIDATED WD #1 | NY5903429 | 86,624 | Surface water purchased | 1 | Below all study benchmarks |
| GREENFIELD WATER DISTRICT | NY1302794 | 1,050 | Ground water | 1 | At or above a study benchmark |
| GREENLAWN WD | NY5103271 | 42,000 | Ground water | 12 | Below all study benchmarks |
| GREENPORT WD NO1 | NY1000238 | 4,050 | Ground water | 1 | Below all study benchmarks |
| GUILDERLAND TOWN WD | NY0100205 | 30,000 | Surface water | 1 | Below all study benchmarks |
| HALFMOON WATER DISTRICT (TROY) | NY4519111 | 15,000 | Surface water purchased | 2 | Below all study benchmarks |
| HAMILTON VILLAGE | NY2602377 | 4,107 | Ground water | 2 | Below all study benchmarks |
| HAMPTON BAYS WD | NY5103704 | 12,500 | Ground water | 5 | Below all study benchmarks |
| HARRIMAN VILLAGE | NY3503531 | 5,000 | Ground water | 2 | At or above a study benchmark |
| HARTLAND WD | NY3100588 | 4,117 | Surface water purchased | 1 | Below all study benchmarks |
| HEMPSTEAD (V) | NY2902827 | 56,000 | Ground water | 2 | Below all study benchmarks |
| HERITAGE HILLS WATERWORKS CORP | NY5917221 | 4,700 | Ground water | 1 | At or above a study benchmark |
| HICKSVILLE WD | NY2902829 | 48,000 | Ground water | 8 | Below all study benchmarks |
| HIGHLAND FALLS VILLAGE | NY3503532 | 4,101 | Surface water | 1 | Below all study benchmarks |
| HIGHLAND WATER DISTRICT | NY5503368 | 4,000 | Surface water | 1 | Below all study benchmarks |
| HOEY-DE GRAW WATERWORKS INC | NY5203353 | 50 | Ground water | 1 | Below all study benchmarks |
| HOMER VILLAGE-NEWTON WATER WORKS | NY1101757 | 4,368 | Ground water | 2 | Below all study benchmarks |
| HOOSICK FALLS (V) PWS | NY4100041 | 4,925 | Ground water | 1 | Below all study benchmarks |
| HORNELL CITY | NY5001215 | 9,870 | Surface water | 2 | Below all study benchmarks |
| HORSEHEADS VILLAGE | NY0701009 | 15,000 | Groundwater under influence of surface water | 2 | Below all study benchmarks |
| HUDSON CITY | NY1000239 | 6,750 | Surface water | 1 | Below all study benchmarks |
| HUDSON FALLS VILLAGE (QUEENSBURY) | NY5700123 | 7,000 | Surface water purchased | 1 | Below all study benchmarks |
| IRVINGTON WATER SUPPLY | NY5903432 | 6,631 | Surface water purchased | 1 | Below all study benchmarks |
| ITHACA CITY | NY5404416 | 29,457 | Surface water | 1 | Below all study benchmarks |
| JAMESTOWN BPU | NY0600366 | 46,712 | Ground water | 2 | Below all study benchmarks |
| JERICHO WD | NY2902831 | 58,000 | Ground water | 20 | Below all study benchmarks |
| JOHNSON CITY WATER WORKS | NY0301668 | 16,578 | Ground water | 3 | Below all study benchmarks |
| JOHNSTOWN (C) WATER WORKS | NY1700019 | 8,154 | Surface water | 2 | Below all study benchmarks |
| KENMORE VILLAGE | NY1410142 | 15,423 | Surface water purchased | 1 | Below all study benchmarks |
| KENSICO WATER DISTRICT | NY5930082 | 17,917 | Surface water purchased | 1 | Below all study benchmarks |
| KINGSBURY WD (QUEENSBURY) | NY5722361 | 4,500 | Surface water purchased | 1 | Below all study benchmarks |
| KINGSTON (CITY) WATER DISTRICT | NY5503374 | 24,000 | Surface water | 1 | Below all study benchmarks |
| KINGSVALE WATER CO | NY5503392 | 600 | Ground water | 1 | Below all study benchmarks |
| LAKE PLACID V | NY1500284 | 5,000 | Surface water | 1 | Below all study benchmarks |
| LARCHMONT VILLAGE | NY5903433 | 6,485 | Surface water purchased | 1 | Below all study benchmarks |
| LATHAM WATER DISTRICT | NY0100198 | 85,590 | Surface water | 1 | Below all study benchmarks |
| LCWSA CONSOLIDATED WATER DISTRICT | NY2501019 | 9,892 | Surface water purchased | 1 | Below all study benchmarks |
| LERAY TOWN WD 2 & 4 | NY2221206 | 7,140 | Ground water | 4 | Below all study benchmarks |
| LEWISTON WATER IMPROVEMENTAREA | NY3100561 | 16,257 | Surface water purchased | 1 | Below all study benchmarks |
| LIBERTY VILLAGE | NY5203329 | 3,900 | Surface water | 3 | Below all study benchmarks |
| LITTLE FALLS CITY | NY2102308 | 4,605 | Surface water | 1 | Below all study benchmarks |
| LIVINGSTON MANOR WD | NY5203330 | 1,500 | Ground water | 1 | Below all study benchmarks |
| LOCKPORT CITY WTP | NY3100564 | 21,165 | Surface water | 1 | Below all study benchmarks |
| LOCKPORT WD#3 | NY3100563 | 21,105 | Surface water purchased | 1 | Below all study benchmarks |
| LOCUST VALLEY WD | NY2902833 | 7,500 | Ground water | 5 | At or above a study benchmark |
| LONG BEACH CITY | NY2902834 | 35,000 | Ground water | 1 | Below all study benchmarks |
| LOWVILLE VILLAGE | NY2402365 | 4,000 | Surface water | 1 | Below all study benchmarks |
| MALONE V | NY1600008 | 13,232 | Ground water | 1 | Below all study benchmarks |
| MANCHESTER WATER DISTRICT, NY | NY1330550 | 1,180 | Ground water | 1 | Below all study benchmarks |
| MANHASSET LAKEVILLE WD | NY2902836 | 43,000 | Ground water | 10 | At or above a study benchmark |
| MARION-ARCADIA-SODUS CSA | NY5801231 | 6,303 | Surface water purchased | 1 | Below all study benchmarks |
| MASSAPEQUA WD | NY2902837 | 43,000 | Ground water | 9 | Below all study benchmarks |
| MCWA | NY2701047 | 525,262 | Surface water | 5 | Below all study benchmarks |
| MECHANICVILLE CITY | NY4500166 | 5,200 | Surface water | 1 | Below all study benchmarks |
| MEDINA VILLAGE | NY3600600 | 6,500 | Surface water purchased | 1 | Below all study benchmarks |
| MENANDS VILLAGE | NY0100200 | 4,500 | Surface water purchased | 1 | Below all study benchmarks |
| MIDDLETOWN CITY | NY3503534 | 30,000 | Surface water | 1 | Below all study benchmarks |
| MINEOLA (V) | NY2902839 | 20,600 | Ground water | 4 | At or above a study benchmark |
| MINERVA WD | NY1500286 | 800 | Ground water | 1 | Below all study benchmarks |
| MONROE VILLAGE | NY3503535 | 12,000 | Surface water | 2 | At or above a study benchmark |
| MONTGOMERY VILLAGE | NY3503542 | 4,519 | Ground water | 3 | Below all study benchmarks |
| MONTICELLO VILLAGE | NY5203337 | 8,000 | Surface water | 2 | Below all study benchmarks |
| MORAVIA VILLAGE | NY0501720 | 1,950 | Ground water | 2 | Below all study benchmarks |
| MOREAU WD #2 (QUEENSBURY) | NY4500177 | 6,600 | Surface water purchased | 2 | Below all study benchmarks |
| MORNINGSIDE HEIGHTS WD / ERWIN (T) | NY5001212 | 4,570 | Ground water | 5 | Below all study benchmarks |
| MORRISVILLE STATE COLLEGE | NY2613319 | 2,620 | Ground water | 1 | Below all study benchmarks |
| MOUNT KISCO WATER DEPARTMENT | NY5903437 | 11,187 | Surface water | 2 | Below all study benchmarks |
| MOUNT MORRIS VILLAGE | NY2501023 | 3,500 | Surface water | 1 | Below all study benchmarks |
| MOUNT VERNON WATER DEPARTMENT | NY5903441 | 73,893 | Surface water purchased | 2 | Below all study benchmarks |
| MVWA - MOHAWK VALLEY WATER AUTHORITY | NY3202411 | 126,250 | Surface water | 1 | Below all study benchmarks |
| NEW CASTLE/STANWOOD W.D. | NY5903442 | 17,116 | Surface water purchased | 1 | Below all study benchmarks |
| NEW PALTZ (VILLAGE) WATER DIST | NY5503379 | 7,523 | Surface water | 1 | Below all study benchmarks |
| NEW WINDSOR CONSOLIDATED WD | NY3503580 | 25,667 | Surface water purchased | 3 | Below all study benchmarks |
| NEW YORK AMERICAN WATER - LYNBROOK | NY2902835 | 220,000 | Ground water | 18 | Below all study benchmarks |
| NEW YORK AMERICAN WATER - MERRICK | NY2902840 | 135,000 | Ground water | 7 | Below all study benchmarks |
| NEW YORK AMERICAN WATER - SEA CLIFF | NY2902853 | 13,400 | Ground water | 2 | Below all study benchmarks |
| NEW YORK CITY SYSTEM | NY7003493 | 8,271,000 | Surface water | 4 | Below all study benchmarks |
| NEWARK VILLAGE | NY5801232 | 9,142 | Surface water | 1 | Below all study benchmarks |
| NEWBURGH CITY | NY3503549 | 29,000 | Surface water | 1 | Below all study benchmarks |
| NEWBURGH CONSOLIDATED WD | NY3503578 | 22,282 | Surface water | 2 | Below all study benchmarks |
| NEWFANE WD NO1,2,3 CONSOL | NY3100573 | 9,304 | Surface water purchased | 1 | Below all study benchmarks |
| NIAGARA FALLS WATER BOARD | NY3100568 | 50,193 | Surface water | 1 | Below all study benchmarks |
| NIAGARA WATER IMPROVEMENT AREA | NY3100571 | 8,100 | Surface water purchased | 1 | Below all study benchmarks |
| NISKAYUNA CONSOLIDATED WD #11 | NY4600073 | 22,287 | Ground water | 1 | Below all study benchmarks |
| NORTH GREENBUSH CONSOLIDATED DISTRICT | NY4130243 | 10,226 | Surface water purchased | 1 | Below all study benchmarks |
| NORTH POINT CREEK APARTMENTS LTD. | NY1930059 | 35 | Ground water | 2 | At or above a study benchmark |
| NORTH TONAWANDA CITY | NY3100572 | 31,568 | Surface water | 1 | Below all study benchmarks |
| NORWICH CITY | NY0801745 | 8,000 | Surface water | 2 | Below all study benchmarks |
| OCEAN BEACH WATER DISTRICT | NY5103280 | 4,500 | Ground water | 2 | Below all study benchmarks |
| OCWA | NY3304336 | 350,000 | Surface water | 3 | Below all study benchmarks |
| OLD WESTBURY (V) | NY2902843 | 4,700 | Ground water | 1 | Below all study benchmarks |
| OLEAN CITY | NY0400345 | 14,500 | Surface water | 3 | Below all study benchmarks |
| ONEIDA CITY | NY2602381 | 11,393 | Surface water | 1 | Below all study benchmarks |
| ONEONTA CITY | NY3800154 | 15,954 | Surface water | 1 | Below all study benchmarks |
| ONTARIO TOWN BENEFIT AREA #1 | NY5801233 | 10,136 | Surface water | 1 | Below all study benchmarks |
| OSSINING WATER DEPARTMENT | NY5903451 | 30,000 | Surface water | 1 | Below all study benchmarks |
| OSWEGO CITY | NY3704361 | 29,400 | Surface water | 1 | Below all study benchmarks |
| PALM TREE | NY3503627 | 51,623 | Ground water | 5 | Below all study benchmarks |
| PALMYRA VILLAGE | NY5801235 | 3,580 | Surface water | 1 | Below all study benchmarks |
| PALMYRA-MACEDON-WALWORTH CSA | NY5801257 | 24,267 | Surface water purchased | 3 | Below all study benchmarks |
| PEEKSKILL CITY | NY5903452 | 24,272 | Surface water | 1 | Below all study benchmarks |
| PENDLETON TOWN WD | NY3100574 | 6,050 | Surface water purchased | 2 | Below all study benchmarks |
| PENN YAN VILLAGE | NY6101263 | 5,248 | Surface water | 1 | Below all study benchmarks |
| PHELPS TOWN CONSOLIDATED WD | NY3430034 | 2,175 | Surface water purchased | 1 | Below all study benchmarks |
| PINE BUSH WATER DISTRICT | NY3503553 | 7,600 | Ground water | 3 | Below all study benchmarks |
| PLAINVIEW WD | NY2902845 | 34,000 | Ground water | 5 | Below all study benchmarks |
| PLATTSBURGH CITY | NY0900217 | 24,173 | Surface water | 1 | Below all study benchmarks |
| POLAND VILLAGE | NY2102313 | 508 | Ground water | 1 | Below all study benchmarks |
| PORT EWEN WATER DISTRICT | NY5503382 | 4,500 | Surface water | 1 | Below all study benchmarks |
| PORT JERVIS CITY | NY3503554 | 9,000 | Surface water | 1 | Below all study benchmarks |
| PORT WASHINGTON WD | NY2912267 | 34,000 | Ground water | 9 | Below all study benchmarks |
| PORTER MASTER IMPROVEMENT AREA | NY3100577 | 6,920 | Surface water purchased | 1 | Below all study benchmarks |
| POTSDAM VILLAGE | NY4404397 | 8,312 | Surface water | 1 | Below all study benchmarks |
| POUGHKEEPSIE CITY | NY1330291 | 30,639 | Surface water purchased | 1 | Below all study benchmarks |
| POUGHKEEPSIE TOWNWIDE WD | NY1302812 | 43,000 | Surface water purchased | 1 | Below all study benchmarks |
| RAVENA VILLAGE | NY0100201 | 4,500 | Surface water | 1 | Below all study benchmarks |
| RENSSELAER CITY PWS | NY4100044 | 9,300 | Surface water purchased | 1 | Below all study benchmarks |
| RHINEBECK VILLAGE WATER | NY1302776 | 6,000 | Surface water | 1 | Below all study benchmarks |
| RICHLAND TOWN PWS | NY3730165 | 3,950 | Ground water | 2 | Below all study benchmarks |
| RIVERHEAD WD | NY5103705 | 35,000 | Ground water | 10 | Below all study benchmarks |
| ROCHESTER CITY | NY2704518 | 210,000 | Surface water | 2 | Below all study benchmarks |
| ROCKVILLE CENTRE (V) | NY2902848 | 24,700 | Ground water | 4 | Below all study benchmarks |
| ROME CITY | NY3202405 | 31,795 | Surface water | 1 | Below all study benchmarks |
| ROSLYN WD | NY2902851 | 17,000 | Ground water | 8 | At or above a study benchmark |
| ROTTERDAM WD #5 | NY4600069 | 28,000 | Ground water | 1 | Below all study benchmarks |
| ROYALTON TOWNWIDE WATER DIST. | NY3100580 | 7,710 | Surface water purchased | 1 | Below all study benchmarks |
| SALAMANCA CITY | NY0400349 | 5,815 | Ground water | 2 | Below all study benchmarks |
| SARANAC LAKE V | NY1600011 | 5,345 | Ground water | 1 | Below all study benchmarks |
| SARATOGA SPRINGS CITY (GEYSER CREST) | NY4500178 | 4,000 | Ground water | 1 | Below all study benchmarks |
| SARATOGA SPRINGS CITY, NY | NY4500168 | 26,525 | Surface water | 2 | Below all study benchmarks |
| SARATOGA WATER SERVICES | NY4511620 | 8,950 | Ground water | 2 | Below all study benchmarks |
| SCARSDALE WATER DEPARTMENT | NY5903457 | 21,649 | Surface water purchased | 2 | Below all study benchmarks |
| SCHENECTADY CITY WATER WORKS | NY4600070 | 61,821 | Ground water | 1 | Below all study benchmarks |
| SCOTIA VILLAGE WATER WORKS | NY4600071 | 12,800 | Ground water | 4 | Below all study benchmarks |
| SCRIBA WD (OSWEGO) | NY3730037 | 9,044 | Surface water purchased | 1 | Below all study benchmarks |
| SEA BREEZE WD | NY2701118 | 7,800 | Surface water purchased | 1 | Below all study benchmarks |
| SENECA FALLS | NY4901198 | 9,400 | Surface water | 1 | Below all study benchmarks |
| SIDNEY VILLAGE | NY1200270 | 3,800 | Ground water | 2 | At or above a study benchmark |
| SKANEATELES WDS | NY3304347 | 3,500 | Surface water purchased | 1 | Below all study benchmarks |
| SLEEPY HOLLOW (VILLAGE) | NY5903450 | 9,870 | Surface water purchased | 1 | Below all study benchmarks |
| SMITHTOWN WATER DISTRICT | NY5105656 | 19,635 | Ground water purchased | 1 | Below all study benchmarks |
| SODUS-HURON-WOLCOTT-BUTLER CSA | NY5801247 | 7,746 | Surface water purchased | 1 | Below all study benchmarks |
| SOUTH FARMINGDALE WD | NY2902854 | 44,700 | Ground water | 7 | Below all study benchmarks |
| SOUTH HUNTINGTON WATER DISTRICT | NY5103263 | 81,760 | Ground water | 11 | Below all study benchmarks |
| SPRINGVILLE VILLAGE | NY1400539 | 4,266 | Ground water | 1 | Below all study benchmarks |
| ST JAMES WATER DISTRICT | NY5103266 | 10,587 | Ground water purchased | 1 | Below all study benchmarks |
| STOCKBRIDGE WATER DISTRICT | NY2602379 | 600 | Surface water purchased | 1 | Below all study benchmarks |
| SUEZ WATER OF OWEGO | NY5304409 | 4,850 | Ground water | 2 | Below all study benchmarks |
| SUEZ WATER WESTCHESTER, INC. RD-1 | NY5903444 | 146,732 | Surface water purchased | 1 | Below all study benchmarks |
| SUEZ WATER WESTCHESTER, INC. RD2 | NY5903456 | 57,301 | Surface water purchased | 2 | At or above a study benchmark |
| SUFFERN VILLAGE | NY4303675 | 12,000 | Ground water | 1 | At or above a study benchmark |
| SUFFOLK COUNTY WATER AUTHORITY | NY5110526 | 1,100,000 | Ground water | 242 | At or above a study benchmark |
| SYRACUSE CITY | NY3304334 | 192,000 | Surface water | 1 | Below all study benchmarks |
| TARRYTOWN WATER SUPPLY | NY5903461 | 11,000 | Surface water purchased | 1 | Below all study benchmarks |
| TICONDEROGA WD | NY1500293 | 3,700 | Surface water | 3 | Below all study benchmarks |
| TONAWANDA, TOWN WATER DEPT. | NY1404556 | 72,571 | Surface water | 1 | Below all study benchmarks |
| TOWN OF HEMPSTEAD WATER DEPARTMENT | NY2900000 | 110,000 | Ground water | 13 | Below all study benchmarks |
| TROY CITY PWS, NY | NY4100050 | 51,401 | Surface water | 1 | Below all study benchmarks |
| TUPPER LAKE V | NY1600012 | 5,500 | Surface water | 2 | Below all study benchmarks |
| U.S.M.A. - LUSK SYSTEM | NY3511887 | 8,000 | Surface water | 1 | Below all study benchmarks |
| ULSTER WATER DISTRICT | NY5503390 | 5,500 | Surface water purchased | 1 | Below all study benchmarks |
| UNITED WAPPINGER WATER IMPROVEMENT DIST. | NY1330660 | 14,000 | Groundwater under influence of surface water | 3 | Below all study benchmarks |
| VESTAL CONSOLIDATED W.D. #1 | NY0301674 | 22,200 | Ground water | 3 | Below all study benchmarks |
| VOORHEESVILLE VILLAGE | NY0100203 | 3,100 | Ground water | 2 | Below all study benchmarks |
| Veolia Water NY | NY4303673 | 270,000 | Surface water | 35 | At or above a study benchmark |
| WA OF GREAT NECK NORTH | NY2902841 | 31,400 | Ground water | 8 | Below all study benchmarks |
| WA OF WESTERN NASSAU | NY2902830 | 120,000 | Ground water | 13 | At or above a study benchmark |
| WALDEN VILLAGE | NY3503559 | 7,007 | Ground water | 3 | Below all study benchmarks |
| WALLKILL/SHAWANGUNK CORRECTION | NY5510590 | 1,200 | Groundwater under influence of surface water | 1 | Below all study benchmarks |
| WAPPINGERS FALLS VILLAGE | NY1302783 | 5,522 | Ground water | 1 | Below all study benchmarks |
| WARSAW VILLAGE | NY6000618 | 3,850 | Surface water | 1 | Below all study benchmarks |
| WASHINGTONVILLE VILLAGE | NY3503567 | 7,700 | Ground water | 2 | Below all study benchmarks |
| WATERFORD WATER WORKS (PURCHASE TROY) | NY4500173 | 9,800 | Surface water purchased | 2 | Below all study benchmarks |
| WATERLOO VILLAGE | NY4901199 | 7,000 | Surface water | 1 | Below all study benchmarks |
| WATERTOWN CITY | NY2202346 | 27,861 | Surface water | 1 | Below all study benchmarks |
| WATERVLIET CITY | NY0110127 | 9,889 | Surface water | 1 | Below all study benchmarks |
| WAVERLY VILLAGE | NY5304410 | 4,830 | Ground water | 4 | At or above a study benchmark |
| WELLSVILLE VILLAGE PUBLIC WATER | NY0200327 | 5,700 | Surface water | 1 | Below all study benchmarks |
| WEST HEMPSTEAD WD | NY2902857 | 32,031 | Ground water | 2 | Below all study benchmarks |
| WESTBURY WD | NY2902856 | 20,500 | Ground water | 9 | At or above a study benchmark |
| WESTCHESTER COUNTY WD #3 | NY5903482 | 6,000 | Surface water purchased | 1 | Below all study benchmarks |
| WESTFIELD VILLAGE AND TOWN | NY0615782 | 3,890 | Surface water | 1 | Below all study benchmarks |
| WHEATFIELD WD | NY3100585 | 18,117 | Surface water purchased | 1 | Below all study benchmarks |
| WHITE PLAINS CITY | NY5903464 | 59,559 | Surface water purchased | 2 | Below all study benchmarks |
| WILLISTON PARK (V) | NY2902858 | 7,287 | Ground water | 2 | At or above a study benchmark |
| WILLSBORO WD | NY1500299 | 1,571 | Surface water | 1 | Below all study benchmarks |
| WILSON TOWN WATER DISTRICT | NY3100587 | 5,993 | Surface water purchased | 1 | Below all study benchmarks |
| WILTON WATER & SEWER AUTHORITY | NY4500186 | 9,490 | Surface water purchased | 4 | Below all study benchmarks |
| WINDHAM MOUNTAIN VILLAGE | NY1920318 | 545 | Ground water | 3 | Below all study benchmarks |
| WOODBURY CONS. W.D. | NY3503573 | 10,845 | Ground water | 3 | Below all study benchmarks |
| WOODRIDGE VILLAGE | NY5203348 | 902 | Surface water | 3 | Below all study benchmarks |
| YESHIVA FARM SETTLEMENT | NY5903150 | 300 | Groundwater under influence of surface water | 1 | At or above a study benchmark |
| YONKERS CITY | NY5903465 | 211,569 | Surface water purchased | 2 | Below all study benchmarks |
| YORKTOWN CONSOLD. WATER DIST.#1 | NY5903469 | 36,000 | Surface water purchased | 2 | At or above a study benchmark |
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. This does not mean every home was tested. Private wells are excluded, and UCMR 5 did not comprehensively monitor every small system. This page does not apply New York's state-specific standards or determine compliance. Use the official state or territory drinking-water program for current regulatory information.