Systems with a yearly average above an EPA comparison level
0.4%1 of 258 active community water systems
All 258 systems met the sampling requirement for a yearly average. Of those systems, 1 had at least one yearly average above an EPA comparison level and 257 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. Louisiana may use different current standards or guidance. These UCMR 5 results do not determine current federal or state compliance. Find the official Louisiana drinking-water program →
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Find your water system
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 Louisiana
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 | 1 | 258 | 0.4% |
| PFOS: 4 ppt level; unrounded average ≥4.05 ppt after applying EPA rounding | 1 | 258 | 0.4% |
| PFHxS: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 258 | 0.0% |
| PFNA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 258 | 0.0% |
| HFPO-DA: 10 ppt level; unrounded average ≥15 ppt after applying EPA rounding | 0 | 258 | 0.0% |
| Hazard Index: 1 level; unrounded index ≥1.5 and at least two detected components | 0 | 258 | 0.0% |
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 |
|---|---|---|---|---|---|
| ABITA SPRINGS WATER SYSTEM | LA1103002 | 3,693 | Ground water | 2 | No available average above comparison levels |
| ARCADIA WATER SYSTEM | LA1013003 | 4,146 | Ground water | 1 | No available average above comparison levels |
| ARCHIBALD WATER SYSTEM | LA1083012 | 4,200 | Ground water | 2 | No available average above comparison levels |
| ASSUMPTION PARISH WW DISTRICT 1 | LA1007001 | 21,366 | Surface water | 1 | No available average above comparison levels |
| AVOYELLES PARISH WATERWORKS DISTRICT 1 | LA1009002 | 3,900 | Ground water | 1 | No available average above comparison levels |
| AVOYELLES WARD ONE WATER SYSTEM INC | LA1009016 | 3,726 | Ground water | 1 | No available average above comparison levels |
| BARKSDALE AFB WATER SYSTEM | LA1015022 | 13,000 | Surface water purchased | 1 | No available average above comparison levels |
| BASTROP WATER SYSTEM | LA1067003 | 18,105 | Ground water | 2 | No available average above comparison levels |
| BATON ROUGE WATER COMPANY | LA1033005 | 596,844 | Ground water | 42 | No available average above comparison levels |
| BAYOU DES CANNES WATER SYSTEM | LA1039016 | 4,578 | Ground water | 1 | No available average above comparison levels |
| BAYOU LIBERTY WATER ASSOCIATION | LA1103005 | 10,791 | Ground water | 2 | No available average above comparison levels |
| BAYOU TECHE WATER WORKS | LA1099002 | 10,137 | Ground water | 1 | No available average above comparison levels |
| BEAU CHENE WATER SYSTEM | LA1103006 | 4,650 | Ground water | 2 | No available average above comparison levels |
| BEAUREGARD DISTRICT NO 2 WARD NO 5 | LA1011012 | 6,613 | Ground water | 2 | No available average above comparison levels |
| BEAUREGARD WATER WORKS DIST #3 | LA1011008 | 24,000 | Ground water | 6 | No available average above comparison levels |
| BELLE CHASSE WATER DISTRICT | LA1075001 | 19,644 | Surface water | 1 | No available average above comparison levels |
| BLANCHARD WATER SYSTEM | LA1017006 | 16,326 | Surface water | 1 | No available average above comparison levels |
| BOGUE-LUSA WATER WORKS DISTRICT | LA1117009 | 4,200 | Ground water | 2 | No available average above comparison levels |
| BROUILLETTE WATER SYSTEM INC | LA1009003 | 3,732 | Ground water | 1 | No available average above comparison levels |
| BROWNVILLE WATER SYSTEM | LA1073004 | 9,696 | Ground water | 3 | No available average above comparison levels |
| BUCKEYE WATER DISTRICT 50 | LA1079004 | 12,078 | Ground water | 2 | No available average above comparison levels |
| CADEVILLE WATER DISTRICT | LA1073060 | 6,219 | Ground water | 4 | No available average above comparison levels |
| CALCASIEU PARISH WW DIST 9 CARLYSS | LA1019116 | 14,502 | Ground water | 1 | No available average above comparison levels |
| CALCASIEU PARISH WW DISTRICT 7 | LA1019114 | 4,791 | Ground water | 1 | No available average above comparison levels |
| CALCASIEU PARISH WW DISTRICT 8 | LA1019118 | 6,834 | Ground water | 2 | No available average above comparison levels |
| CALCASIEU PARISH WW DISTRICT NO 1 | LA1019051 | 20,837 | Ground water | 2 | No available average above comparison levels |
| CALCASIEU PARISH WW DISTRICT NO 4 | LA1019053 | 5,340 | Ground water | 1 | No available average above comparison levels |
| CALCASIEU PARISH WW DISTRICT NO 5 | LA1019084 | 5,088 | Ground water | 1 | No available average above comparison levels |
| CAMERON PARISH WW DISTRICT 11-SWEET LAKE | LA1023011 | 3,507 | Ground water | 2 | No available average above comparison levels |
| CAMERON PARISH WW DISTRICT 9 | LA1023012 | 871 | Ground water | 4 | No available average above comparison levels |
| CECILIA WATER CORPORATION | LA1099005 | 12,420 | Ground water | 1 | No available average above comparison levels |
| CHENIERE DREW NORTH WATER SYSTEM | LA1073100 | 11,280 | Ground water | 5 | No available average above comparison levels |
| CITY OF ABBEVILLE WATER SYSTEM | LA1113001 | 14,217 | Ground water | 1 | No available average above comparison levels |
| CITY OF ALEXANDRIA WATER SYSTEM | LA1079001 | 66,798 | Ground water | 9 | No available average above comparison levels |
| CITY OF BAKER WATER SYSTEM | LA1033003 | 13,855 | Ground water | 4 | No available average above comparison levels |
| CITY OF BOSSIER CITY WATER SYSTEM | LA1015004 | 79,506 | Surface water | 1 | No available average above comparison levels |
| CITY OF BREAUX BRIDGE WATER SYSTEM | LA1099003 | 10,098 | Ground water | 1 | No available average above comparison levels |
| CITY OF BROUSSARD WATER SYSTEM | LA1055003 | 5,151 | Ground water | 1 | No available average above comparison levels |
| CITY OF CARENCRO WATER SYSTEM | LA1055005 | 11,301 | Ground water | 2 | No available average above comparison levels |
| CITY OF DENHAM SPRINGS WATER SYSTEM | LA1063004 | 25,725 | Ground water | 5 | No available average above comparison levels |
| CITY OF DERIDDER WATER SYSTEM | LA1011001 | 14,400 | Ground water | 4 | No available average above comparison levels |
| CITY OF GONZALES WATER SYSTEM | LA1005030 | 16,806 | Ground water | 3 | No available average above comparison levels |
| CITY OF HAMMOND WATER SYSTEM | LA1105009 | 21,135 | Ground water | 5 | No available average above comparison levels |
| CITY OF JEANERETTE WATER SYSTEM | LA1045004 | 6,189 | Ground water | 1 | No available average above comparison levels |
| CITY OF JENNINGS WATER SYSTEM | LA1053003 | 9,837 | Ground water | 1 | No available average above comparison levels |
| CITY OF KAPLAN WATER SYSTEM | LA1113009 | 4,340 | Ground water | 1 | No available average above comparison levels |
| CITY OF LAKE CHARLES WATER SYSTEM | LA1019029 | 79,500 | Ground water | 6 | No available average above comparison levels |
| CITY OF LEESVILLE WATER SYSTEM | LA1115019 | 10,545 | Ground water | 2 | No available average above comparison levels |
| CITY OF MANY WATER SYSTEM | LA1085016 | 4,428 | Surface water | 3 | No available average above comparison levels |
| CITY OF MARKSVILLE WATER SYSTEM | LA1009011 | 7,593 | Ground water purchased | 1 | No available average above comparison levels |
| CITY OF OAKDALE WATER SYSTEM | LA1003006 | 6,114 | Ground water | 1 | No available average above comparison levels |
| CITY OF OPELOUSAS WATER SYSTEM | LA1097010 | 20,388 | Ground water | 2 | No available average above comparison levels |
| CITY OF PINEVILLE WATER SYSTEM | LA1079016 | 20,358 | Ground water | 7 | No available average above comparison levels |
| CITY OF PLAQUEMINE WATER SYSTEM | LA1047005 | 14,043 | Ground water | 2 | No available average above comparison levels |
| CITY OF RAYNE WATER SYSTEM | LA1001007 | 10,908 | Ground water | 1 | No available average above comparison levels |
| CITY OF SCOTT WATER SYSTEM | LA1055026 | 9,696 | Ground water purchased | 1 | No available average above comparison levels |
| CITY OF ST MARTINVILLE WATER SYSTEM | LA1099007 | 7,263 | Ground water | 1 | No available average above comparison levels |
| CITY OF VIDALIA WATER SYSTEM | LA1029011 | 6,354 | Ground water | 1 | Above an EPA comparison level |
| CITY OF VILLE PLATTE WATER SYSTEM | LA1039010 | 6,590 | Ground water | 5 | No available average above comparison levels |
| CITY OF WINNFIELD WATER SYSTEM | LA1127012 | 7,194 | Ground water | 1 | No available average above comparison levels |
| CITY OF YOUNGSVILLE PURCHASE WS | LA1055195 | 7,623 | Ground water purchased | 2 | No available average above comparison levels |
| CONCORDIA WATERWORKS DISTRICT 1 | LA1029003 | 6,921 | Ground water | 1 | No available average above comparison levels |
| CONSOLIDATED WATERWORKS DISTRICT 2 | LA1067012 | 3,498 | Ground water | 2 | No available average above comparison levels |
| COUSHATTA WATER SYSTEM | LA1081001 | 3,300 | Ground water | 1 | No available average above comparison levels |
| COVINGTON WATER SUPPLY | LA1103011 | 16,185 | Ground water | 3 | No available average above comparison levels |
| CROWLEY WATER SYSTEM (LAWCO) | LA1001002 | 17,733 | Ground water | 1 | No available average above comparison levels |
| CULBERTSON WATER SYSTEM | LA1061024 | 3,300 | Ground water | 3 | No available average above comparison levels |
| CYPRESS BLACK BAYOU WATER SYSTEM | LA1015040 | 5,520 | Surface water purchased | 1 | No available average above comparison levels |
| DELHI WATER SUPPLY | LA1083002 | 4,071 | Ground water | 1 | No available average above comparison levels |
| DEQUINCY WATER SYSTEM (LAWCO) | LA1019008 | 5,370 | Ground water | 2 | No available average above comparison levels |
| DESOTO PARISH WATER WORKS DISTRICT 1 | LA1031030 | 7,173 | Surface water | 1 | No available average above comparison levels |
| DUBACH WATER SYSTEM | LA1061003 | 1,218 | Ground water | 2 | No available average above comparison levels |
| E JEFFERSON WW DISTRICT 1 | LA1051001 | 275,163 | Surface water | 3 | No available average above comparison levels |
| EAST CENTRAL VERNON WATER SYSTEM | LA1115117 | 6,363 | Ground water | 4 | No available average above comparison levels |
| EAST FELICIANA RURAL GURLEY RD WS | LA1037004 | 14,829 | Ground water | 1 | No available average above comparison levels |
| EAST SIDE WATER SYSTEM | LA1039003 | 5,640 | Ground water | 2 | No available average above comparison levels |
| EBARB WWKS DIST # 1 - AIMWELL AREA | LA1085059 | 6,738 | Ground water purchased | 1 | No available average above comparison levels |
| EGAN WATER CORPORATION | LA1001025 | 5,337 | Ground water | 1 | No available average above comparison levels |
| EUNICE WATER SYSTEM (LAWCO) | LA1097022 | 15,393 | Ground water | 2 | No available average above comparison levels |
| FAIRVIEW UNION WATER SYSTEM | LA1081012 | 2,346 | Surface water | 1 | No available average above comparison levels |
| FARMERVILLE WATER SYSTEM | LA1111005 | 5,352 | Ground water | 3 | No available average above comparison levels |
| FIFTH WARD WATER SYSTEM | LA1009007 | 5,676 | Ground water | 1 | No available average above comparison levels |
| FOLSOM WATER SUPPLY | LA1103014 | 1,992 | Ground water | 3 | No available average above comparison levels |
| FOREST HILL UTILITIES | LA1079009 | 3,600 | Ground water | 1 | No available average above comparison levels |
| FORT POLK NORTH WATER SYSTEM | LA1115064 | 9,420 | Ground water | 1 | No available average above comparison levels |
| FORT POLK SOUTH WATER SYSTEM | LA1115065 | 10,902 | Ground water | 2 | No available average above comparison levels |
| FRANKLIN WATER SUPPLY | LA1101003 | 8,325 | Surface water | 1 | No available average above comparison levels |
| FSWC - HAMMOND HEIGHTS | LA1105010 | 4,281 | Ground water | 4 | No available average above comparison levels |
| GARDNER COMMUNITY WATER SYSTEM | LA1079010 | 4,566 | Ground water | 3 | No available average above comparison levels |
| GOWC East | LA1073121 | 11,742 | Ground water | 2 | No available average above comparison levels |
| GOWC NORTH WATER SYSTEM | LA1073120 | 13,287 | Ground water | 4 | No available average above comparison levels |
| GRAMBLING STATE UNIVERSITY WS | LA1061005 | 6,000 | Ground water | 3 | No available average above comparison levels |
| GRAMBLING WATER SYSTEM | LA1061006 | 4,949 | Ground water | 3 | No available average above comparison levels |
| GRAMERCY WATERWORKS | LA1093002 | 2,860 | Surface water | 1 | No available average above comparison levels |
| GREATER WARD 1 WATERWORKS DISTRICT | LA1061007 | 3,333 | Ground water | 2 | No available average above comparison levels |
| GREENSBURG WATER SYSTEM | LA1091004 | 1,340 | Ground water | 1 | No available average above comparison levels |
| GRETNA WATERWORKS | LA1051003 | 17,026 | Surface water | 1 | No available average above comparison levels |
| HENDERSON NINA WATER SYSTEM INC | LA1099006 | 5,535 | Ground water | 1 | No available average above comparison levels |
| HOMER WATER SYSTEM, LA | LA1027003 | 4,524 | Ground water | 2 | No available average above comparison levels |
| HOUMA WATER TREATMENT SERVICE AREA | LA1109001 | 11,658 | Surface water | 1 | No available average above comparison levels |
| HOUSTON RIVER WATERWORKS DISTRICT 11 | LA1019119 | 6,915 | Ground water | 1 | No available average above comparison levels |
| IBERIA WATER WORKS DISTRICT 3 - COTEAU | LA1045002 | 8,775 | Ground water | 1 | No available average above comparison levels |
| IBERVILLE WATERWORKS DISTRICT #2 | LA1047007 | 6,657 | Ground water purchased | 1 | No available average above comparison levels |
| INTRACOASTAL WATER SYSTEM WEST | LA1047002 | 6,489 | Surface water | 1 | No available average above comparison levels |
| JEFF DAVIS CENTRAL WATERWORKS DISTRICT | LA1053012 | 5,709 | Ground water | 1 | No available average above comparison levels |
| JEFF DAVIS WATER AND SEWER COMMISSION 1 | LA1053014 | 9,780 | Ground water | 1 | No available average above comparison levels |
| JEFF DAVIS WATER DISTRICT 4 | LA1053013 | 4,194 | Ground water | 1 | No available average above comparison levels |
| JONESBORO WATER SYSTEM, LA | LA1049010 | 6,231 | Ground water | 6 | No available average above comparison levels |
| KEATCHIE WATER SYSTEM | LA1031007 | 4,446 | Ground water | 7 | No available average above comparison levels |
| KIROLI DARBONNE WS | LA1073020 | 9,210 | Ground water | 3 | No available average above comparison levels |
| KOLIN RUBY WISE WATERWORK DISTRICT 11 A | LA1079023 | 4,992 | Ground water | 2 | No available average above comparison levels |
| LAFAYETTE UTILITIES WATER SYSTEM | LA1055017 | 169,389 | Ground water | 5 | No available average above comparison levels |
| LAFOURCHE WATER DISTRICT 1 | LA1057001 | 81,609 | Surface water | 3 | No available average above comparison levels |
| LAKE PROVIDENCE WATER SYSTEM | LA1035002 | 5,850 | Ground water | 1 | No available average above comparison levels |
| LAWTELL WATER WORKS DISTRICT NO 1 | LA1097004 | 3,717 | Ground water | 1 | No available average above comparison levels |
| LEE ROAD WATER CORPORATION | LA1103020 | 7,665 | Ground water | 2 | No available average above comparison levels |
| LENA WATER SYSTEM INC | LA1079019 | 3,540 | Ground water | 4 | No available average above comparison levels |
| LEWISBURG BELLEVUE WATER SYSTEM | LA1097006 | 8,226 | Ground water | 1 | No available average above comparison levels |
| LOUISIANA STATE PENITENTIARY | LA1125005 | 6,362 | Ground water | 1 | No available average above comparison levels |
| LPWD NORTH PRODUCTION FACILITY | LA1055171 | 4,122 | Ground water | 1 | No available average above comparison levels |
| LPWD SOUTH | LA1055156 | 15,132 | Ground water purchased | 1 | No available average above comparison levels |
| LPWDN NORTH REGION | LA1055191 | 16,833 | Ground water purchased | 1 | No available average above comparison levels |
| LUTCHER WATERWORKS | LA1093003 | 4,781 | Surface water | 1 | No available average above comparison levels |
| MAGNOLIA PLANTATION WATER SYSTEM INC | LA1113032 | 8,769 | Ground water | 1 | No available average above comparison levels |
| MAGNOLIA WATER UTILITIES - EDEN ISLES | LA1103013 | 10,155 | Ground water | 1 | No available average above comparison levels |
| MAGNOLIA WATER UTILITIES - GREENLEAVES | LA1103118 | 8,031 | Ground water | 2 | No available average above comparison levels |
| MAGNOLIA WATER UTILITIES - THE MEADOWS | LA1103106 | 4,701 | Ground water | 2 | No available average above comparison levels |
| MANDEVILLE WATER SUPPLY | LA1103023 | 13,000 | Ground water | 3 | No available average above comparison levels |
| MANSFIELD WATER SYSTEM | LA1031009 | 7,512 | Surface water | 1 | No available average above comparison levels |
| MILTON PURCHASE WATER SYSTEM | LA1055196 | 3,300 | Ground water purchased | 2 | No available average above comparison levels |
| MINDEN WATER SYSTEM | LA1119021 | 16,281 | Ground water | 1 | No available average above comparison levels |
| MIRE BRANCH WATER CORPORATION | LA1001024 | 9,480 | Ground water | 2 | No available average above comparison levels |
| MONROE WATER SYSTEM, LA | LA1073031 | 57,000 | Surface water | 1 | No available average above comparison levels |
| MONTEREY RURAL WATER SYSTEM INC | LA1029007 | 5,250 | Ground water | 1 | No available average above comparison levels |
| MORGAN CITY WATER SYSTEM, LA | LA1101005 | 12,703 | Surface water | 1 | No available average above comparison levels |
| NATCHITOCHES PARISH WWKS DISTRICT 2 | LA1069006 | 8,415 | Ground water | 1 | No available average above comparison levels |
| NEW CARROLL WATER SYSTEM | LA1123005 | 3,507 | Ground water | 1 | No available average above comparison levels |
| NEW IBERIA WATER SYSTEM (LAWCO) | LA1045009 | 59,928 | Ground water | 1 | No available average above comparison levels |
| NEW LLANO WATER DEPARTMENT | LA1115022 | 3,300 | Ground water | 2 | No available average above comparison levels |
| NEW ORLEANS CARROLLTON WW | LA1071009 | 334,903 | Surface water | 3 | No available average above comparison levels |
| NEW ORLEANS ALGIERS WATER WORKS | LA1071001 | 52,785 | Surface water | 1 | No available average above comparison levels |
| NEW ROADS WATER SYSTEM | LA1077026 | 9,024 | Ground water | 4 | No available average above comparison levels |
| NORTH DESOTO WATER SYSTEM | LA1031011 | 7,608 | Ground water | 3 | No available average above comparison levels |
| NORTH FRANKLIN WATER WORKS | LA1041003 | 7,989 | Ground water | 2 | No available average above comparison levels |
| NORTH IBERVILLE WATER SYSTEM | LA1047024 | 1,524 | Ground water | 2 | No available average above comparison levels |
| NORTH OF CROWLEY WATER CORPORATION | LA1001023 | 4,020 | Ground water | 1 | No available average above comparison levels |
| PARISH UTILITIES OF ASCENSION | LA1005035 | 9,732 | Surface water | 1 | No available average above comparison levels |
| PATTERSON WATER SYSTEM | LA1101006 | 8,456 | Surface water | 1 | No available average above comparison levels |
| PINEHILL WATERWORKS DISTRICT | LA1017027 | 4,926 | Surface water purchased | 2 | No available average above comparison levels |
| PLAISANCE WATER SYSTEM | LA1097012 | 6,465 | Ground water | 1 | No available average above comparison levels |
| PLEASANT VALLEY WATER SYSTEM | LA1119023 | 1,683 | Ground water | 2 | No available average above comparison levels |
| POINTE COUPEE WATER WORKS DISTRICT 1 | LA1077043 | 10,629 | Ground water | 4 | No available average above comparison levels |
| POLLOCK AREA WATER SYSTEM INC | LA1043017 | 3,900 | Ground water | 2 | No available average above comparison levels |
| PONTCHATOULA WATER SYSTEM | LA1105019 | 6,657 | Ground water | 3 | No available average above comparison levels |
| PORT ALLEN WATER SYSTEM | LA1121014 | 6,759 | Ground water | 2 | No available average above comparison levels |
| PORT SULPHUR WATER DISTRICT | LA1075006 | 10,308 | Surface water | 1 | No available average above comparison levels |
| PRAIRIE RONDE WATER SYSTEM INC | LA1097014 | 6,090 | Ground water | 2 | No available average above comparison levels |
| RAPIDES ISLAND WATER ASSOCIATION INC | LA1079020 | 5,658 | Ground water | 5 | No available average above comparison levels |
| RAPIDES PARISH WATERWORKS DISTRICT 3 | LA1079017 | 19,983 | Surface water | 4 | No available average above comparison levels |
| RAYVILLE WATER SYSTEM | LA1083006 | 4,842 | Ground water | 1 | No available average above comparison levels |
| RESOLVE WHISPERWOOD ESTATES SD WS | LA1103046 | 6,867 | Ground water | 2 | No available average above comparison levels |
| RURAL FRANKLINTON WATER | LA1117003 | 3,450 | Ground water | 2 | No available average above comparison levels |
| RUSTON WATER SYSTEM | LA1061017 | 22,468 | Ground water | 9 | No available average above comparison levels |
| SABINE PARISH WATER DISTRICT 1 | LA1085036 | 6,924 | Ground water | 2 | No available average above comparison levels |
| SAVOY SWORDS WATER SYSTEM INC | LA1097024 | 7,326 | Ground water | 2 | No available average above comparison levels |
| SCHRIEVER WATER TREATMENT SERVICE AREA | LA1109002 | 116,460 | Surface water | 1 | No available average above comparison levels |
| SHREVEPORT WATER SYSTEM | LA1017031 | 192,378 | Surface water | 1 | No available average above comparison levels |
| SLIDELL WATER SUPPLY | LA1103041 | 35,547 | Ground water | 7 | No available average above comparison levels |
| SOUTH CLAIBORNE WATER SYSTEM | LA1027006 | 3,843 | Ground water | 3 | No available average above comparison levels |
| SOUTH GRANT WATER CORPORATION | LA1043008 | 5,289 | Ground water | 3 | No available average above comparison levels |
| SOUTH MONROE WS GOWC | LA1073046 | 7,335 | Ground water | 1 | No available average above comparison levels |
| SOUTH RAYNE WATER CORPORATION | LA1001022 | 4,254 | Ground water | 1 | No available average above comparison levels |
| SOUTH TOLEDO BEND WATER DISTRICT | LA1085055 | 5,943 | Ground water | 1 | No available average above comparison levels |
| SOUTH VERNON PARISH WATERWORKS DISTRICT | LA1115118 | 4,083 | Ground water | 1 | No available average above comparison levels |
| SOUTHEAST WATERWORKS DISTRICT 2 | LA1113031 | 6,810 | Ground water | 1 | No available average above comparison levels |
| SOUTHWEST ALLEN WW DISTRICT NO 2 | LA1003009 | 8,106 | Ground water | 3 | No available average above comparison levels |
| SOUTHWEST OUACHITA WATERWORKS, INC | LA1073047 | 10,725 | Ground water | 6 | No available average above comparison levels |
| SPRINGHILL WATER SYSTEM | LA1119028 | 7,800 | Ground water | 4 | No available average above comparison levels |
| ST BERNARD PARISH WATERWORKS | LA1087001 | 44,783 | Surface water | 1 | No available average above comparison levels |
| ST CHARLES PARISH DEPT OF WATERWORKS | LA1089001 | 52,879 | Surface water | 2 | No available average above comparison levels |
| ST JAMES WATER DISTRICT 1 | LA1093004 | 7,200 | Surface water | 1 | No available average above comparison levels |
| ST JAMES WATER DISTRICT 2 | LA1093005 | 7,513 | Surface water | 1 | No available average above comparison levels |
| ST JOHN WATER DISTRICT 3 | LA1095007 | 31,965 | Ground water | 1 | No available average above comparison levels |
| ST JOHN WATER DISTRICT 1 | LA1095003 | 10,484 | Surface water | 1 | No available average above comparison levels |
| ST JOHN WATER DISTRICT 2 | LA1095002 | 3,702 | Surface water | 1 | No available average above comparison levels |
| ST LANDRY WATER WORKS DISTRICT 2 RURAL | LA1097033 | 4,761 | Ground water | 1 | No available average above comparison levels |
| ST MARY PARISH W&S #2 BAYOU VISTA | LA1101015 | 5,379 | Surface water purchased | 1 | No available average above comparison levels |
| ST MARY WATER & SEWER COMM #3 | LA1101010 | 7,828 | Surface water | 1 | No available average above comparison levels |
| ST TAM PARISH - BRIARWOOD TERRACE | LA1103079 | 17,536 | Ground water | 5 | No available average above comparison levels |
| ST TAM PARISH - CROSS GATES SD | LA1103053 | 8,037 | Ground water | 2 | No available average above comparison levels |
| ST TAM PARISH-FAUBOURG-COQUILLE | LA1103149 | 18,372 | Ground water | 5 | No available average above comparison levels |
| ST TAMMANY WATER DIST 2 | LA1103033 | 5,200 | Ground water | 1 | No available average above comparison levels |
| SULPHUR CITY OF WATER SYSTEM | LA1019044 | 24,489 | Ground water | 2 | No available average above comparison levels |
| SUMMERVILLE WATER SYSTEM | LA1059009 | 1,425 | Ground water | 1 | No available average above comparison levels |
| TALLULAH WATER SYSTEM | LA1065003 | 8,601 | Ground water | 1 | No available average above comparison levels |
| TANGIPAHOA (SECOND WARD) WATER DISTRICT | LA1105077 | 4,112 | Ground water | 4 | No available average above comparison levels |
| TANGIPAHOA PARISH WATER DISTRICT | LA1105008 | 75,873 | Ground water | 12 | No available average above comparison levels |
| TENSAS WATER DISTRICT ASSOCIATION | LA1107009 | 3,843 | Surface water | 1 | No available average above comparison levels |
| TESI OSSUN HEIGHTS | LA1055140 | 393 | Ground water purchased | 1 | No available average above comparison levels |
| THIBODAUX WATERWORKS | LA1057003 | 14,862 | Surface water | 1 | No available average above comparison levels |
| TOWN & COUNTRY SERVICE | LA1073054 | 5,715 | Surface water purchased | 1 | No available average above comparison levels |
| TOWN OF ALBANY WATER SYSTEM | LA1063022 | 7,305 | Ground water | 3 | No available average above comparison levels |
| TOWN OF AMITE WATER SYSTEM | LA1105001 | 4,300 | Ground water | 3 | No available average above comparison levels |
| TOWN OF ARNAUDVILLE WATER SYSTEM | LA1099001 | 3,957 | Ground water | 1 | No available average above comparison levels |
| TOWN OF BENTON WATER SYSTEM | LA1015002 | 8,037 | Surface water purchased | 1 | No available average above comparison levels |
| TOWN OF BERWICK | LA1101014 | 5,024 | Surface water purchased | 1 | No available average above comparison levels |
| TOWN OF BUNKIE WATER SYSTEM | LA1009004 | 5,169 | Ground water | 1 | No available average above comparison levels |
| TOWN OF CHURCH POINT WATER SYSTEM | LA1001001 | 4,176 | Ground water | 1 | No available average above comparison levels |
| TOWN OF ERATH WATER SYSTEM | LA1113005 | 2,985 | Ground water | 1 | No available average above comparison levels |
| TOWN OF FERRIDAY WATER SYSTEM | LA1029005 | 3,816 | Ground water | 1 | No available average above comparison levels |
| TOWN OF FRANKLINTON WATER SYSTEM | LA1117002 | 4,150 | Ground water | 3 | No available average above comparison levels |
| TOWN OF GREENWOOD WATER SYSTEM | LA1017014 | 5,205 | Surface water | 1 | No available average above comparison levels |
| TOWN OF HAUGHTON WATER SYSTEM | LA1015011 | 5,355 | Ground water | 8 | No available average above comparison levels |
| TOWN OF IOWA WATER SYSTEM | LA1019026 | 3,636 | Ground water | 1 | No available average above comparison levels |
| TOWN OF JENA WATER SYSTEM | LA1059003 | 3,614 | Ground water | 5 | No available average above comparison levels |
| TOWN OF LAKE ARTHUR WATER SYSTEM | LA1053005 | 2,706 | Ground water | 2 | No available average above comparison levels |
| TOWN OF LEONVILLE WATER SYSTEM | LA1097005 | 9,552 | Ground water | 3 | No available average above comparison levels |
| TOWN OF LIVINGSTON WATER SYSTEM | LA1063013 | 8,946 | Ground water | 3 | No available average above comparison levels |
| TOWN OF MAMOU WATER SYSTEM | LA1039005 | 4,559 | Ground water | 1 | No available average above comparison levels |
| TOWN OF MARINGOUIN | LA1047003 | 3,300 | Ground water | 2 | No available average above comparison levels |
| TOWN OF PEARL RIVER | LA1103157 | 3,333 | Ground water | 2 | No available average above comparison levels |
| TOWN OF PLAUCHEVILLE WATER SYSTM | LA1009013 | 4,233 | Ground water | 2 | No available average above comparison levels |
| TOWN OF PORT BARRE WATER SYSTEM | LA1097013 | 3,828 | Ground water | 1 | No available average above comparison levels |
| TOWN OF SUNSET WATER SYSTEM | LA1097015 | 4,356 | Ground water | 2 | No available average above comparison levels |
| TOWN OF VINTON WATER SYSTEM | LA1019048 | 4,101 | Ground water | 1 | No available average above comparison levels |
| TOWN OF WELSH WATER SYSTEM | LA1053006 | 4,311 | Ground water | 1 | No available average above comparison levels |
| TOWN OF WOODWORTH WATER SYSTEM | LA1079027 | 4,818 | Ground water | 2 | No available average above comparison levels |
| UNITED WATER SYSTEM | LA1099009 | 4,446 | Ground water | 1 | No available average above comparison levels |
| UTILITIES INC - KINGSPOINT SUBDIVISION | LA1103055 | 6,351 | Ground water | 2 | No available average above comparison levels |
| UTILITIES INC - NORTH PARK WATER SUPPLY | LA1103124 | 11,298 | Ground water | 5 | No available average above comparison levels |
| VARNADO WATER WORKS | LA1117006 | 4,230 | Ground water | 3 | No available average above comparison levels |
| VARNADO WATER WORKS - PINE | LA1117025 | 840 | Ground water | 3 | No available average above comparison levels |
| VERMILION WATERWORKS DISTRICT 1 | LA1113034 | 24,132 | Ground water | 3 | No available average above comparison levels |
| VERNON PARISH WATER AND SEWER COMMISSION | LA1115071 | 5,295 | Ground water | 3 | No available average above comparison levels |
| VILLAGE OF PARKS WATER SYSTEM | LA1099008 | 12,801 | Ground water | 1 | No available average above comparison levels |
| VILLAGE OF TURKEY CREEK WATER SYSTEM | LA1039013 | 5,289 | Ground water | 3 | No available average above comparison levels |
| VILLAGE WATER SYSTEM | LA1015018 | 10,890 | Ground water | 8 | No available average above comparison levels |
| VIVIAN WATER SYSTEM | LA1017037 | 4,050 | Surface water | 1 | No available average above comparison levels |
| W JEFFERSON WW DISTRICT 2 | LA1051004 | 140,264 | Surface water | 1 | No available average above comparison levels |
| WALKER WATER SYSTEM | LA1063017 | 15,813 | Ground water | 4 | No available average above comparison levels |
| WARD II WATER DISTRICT | LA1063039 | 78,147 | Ground water | 17 | No available average above comparison levels |
| WATER & SEWER COMMISSION 4 OF ST MARY | LA1101011 | 9,709 | Surface water | 1 | No available average above comparison levels |
| WATERWORKS DISTRICT 7 | LA1017052 | 5,817 | Ground water | 4 | No available average above comparison levels |
| WBR DISTRICT 4 -SECTION ROAD WINTERVILLE | LA1121027 | 5,571 | Ground water | 3 | No available average above comparison levels |
| WBR PUBLIC UTILITIES | LA1121008 | 4,329 | Ground water | 5 | No available average above comparison levels |
| WESLEY CHAPEL WATER SYSTEM | LA1061020 | 4,080 | Ground water | 4 | No available average above comparison levels |
| WEST BATON ROUGE WATER WORKS DISTRICT 2 | LA1121018 | 13,437 | Ground water | 5 | No available average above comparison levels |
| WEST FELICIANA CONSOL WWKS DISTRICT 13 | LA1125010 | 12,045 | Ground water | 5 | No available average above comparison levels |
| WEST GRANT WATER ASSOCIATION | LA1043014 | 3,324 | Ground water | 1 | No available average above comparison levels |
| WEST HWY 80 ARK ROAD WS | LA1073055 | 14,649 | Ground water | 2 | No available average above comparison levels |
| WEST MONROE WATER SYSTEM | LA1073056 | 16,005 | Ground water | 5 | No available average above comparison levels |
| WEST VERNON PARISH WATERWORKS DISTRICT | LA1115121 | 4,365 | Ground water | 1 | No available average above comparison levels |
| WESTLAKE CITY OF WATER SYSTEM | LA1019054 | 4,858 | Ground water | 3 | No available average above comparison levels |
| WESTVIEW WATER WORKS | LA1105028 | 1,134 | Ground water | 1 | No available average above comparison levels |
| WESTWEGO WATERWORKS | LA1051005 | 8,534 | Surface water purchased | 1 | No available average above comparison levels |
| WINNSBORO WATER SYSTEM | LA1041006 | 7,518 | Ground water | 1 | No available average above comparison levels |
| WWKS DISTRICT 2 OF ST HELENA | LA1091007 | 8,772 | Ground water | 7 | No available average above comparison levels |
| ZACHARY WATER SYSTEM | LA1033030 | 31,569 | Ground water | 5 | 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.