Louisiana Water Systems

Compiled by PlainEnviro · August 25, 2026

815 community water systems in Louisiana, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems

815

Health-Based Violation Records

14,536

Health Violations

544 systems

Population Served

5,165,961

Louisiana community water systems are regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act; each utility files compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency directly. PlainEnviro's health-based SDWIS extract above counts health-based exceedances only -- monitoring and reporting violations are not present in these figures.

Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.

Which water systems have violations? (332)

#	System Name	City	Source	Violations	Pop. Served	Health
1	PENDLETON WATER ASSOCIATION Many	Many	Surface Water	306	2,634	Yes
2	TOWN OF FERRIDAY WATER SYSTEM Ferriday	Ferriday	Groundwater	284	3,816	Yes
3	TOWN OF OIL CITY WATER SYSTEM Oil City	Oil City	Surface Water	247	2,148	Yes
4	BELLWOOD WATER SYSTEM Provencal	Provencal	Groundwater	240	1,032	Yes
5	FAIRVIEW UNION WATER SYSTEM Coushatta	Coushatta	Surface Water	209	2,346	Yes
6	LAKE ST JOHN WATERWORKS DISTRICT 1 Ferriday	Ferriday	Groundwater	205	2,067	Yes
7	EBARB WWKS DIST #1 - NORTH EBARB Zwolle	Zwolle	Groundwater	202	1,761	Yes
8	RED HILL WATERWORKS INC. Georgetown	Georgetown	Groundwater	195	1,914	Yes
9	WEST WINN WATER SYSTEM INC Winnfield	Winnfield	Groundwater	193	1,965	Yes
10	CITY OF FRANKLIN WATER SUPPLY Franklin	Franklin	Surface Water	191	8,325	Yes
11	TOWN OF NEWELLTON WATER SYSTEM Newellton	Newellton	Surface Water	170	1,100	Yes
12	WARDS CHAPEL WATER SYSTEM Farmerville	Farmerville	Groundwater	164	1,620	Yes
13	TOWN OF PLAIN DEALING WATER SYSTEM Plain Dealing	Plain Dealing	Groundwater	162	2,346	Yes
14	ALBERTA WATER SYSTEM Castor	Castor	Groundwater	161	1,860	Yes
15	SARDIS WATER SYSTEM Gilbert	Gilbert	Groundwater	147	1,404	Yes
16	UNION SPRINGS WATER SYSTEM Converse	Converse	Groundwater	137	1,260	Yes
17	SOUTH DESOTO WATER SYSTEM Mansfield	Mansfield	Groundwater	131	963	Yes
18	PRAIRIE ROAD WATER DISTRICT Monroe	Monroe	Groundwater	126	2,598	Yes
19	TRI-WATER SYSTEM Farmerville	Farmerville	Groundwater	125	1,302	Yes
20	PORT SULPHUR WATER DISTRICT Belle Chasse	Belle Chasse	Surface Water	123	10,308	Yes
21	CADEVILLE WATER DISTRICT West Monroe	West Monroe	Groundwater	120	6,219	Yes
22	UNION PARISH WATERWORKS DISTRICT 1 Farmerville	Farmerville	Groundwater	114	1,626	Yes
23	BELMONT WATERWORKS INC Belmont	Belmont	Groundwater	112	2,805	Yes
24	EBARB WWKS DIST # 1 - AIMWELL AREA Zwolle	Zwolle	Groundwater	111	6,738	Yes
25	HICO WATER SYSTEM Dubach	Dubach	Groundwater	111	1,530	Yes
26	VILLAGE OF MOORINGSPORT WATER SYSTEM Mooringsport	Mooringsport	Surface Water	111	999	Yes
27	VILLAGE OF MARION WATER SYSTEM Marion	Marion	Groundwater	108	1,533	Yes
28	TOWN OF ZWOLLE WATER SYSTEM Zwolle	Zwolle	Groundwater	107	2,520	Yes
29	LINVILLE-HAILE WATER SYSTEM Marion	Marion	Groundwater	107	1,635	Yes
30	TANNEHILL WATER SYSTEM Winnfield	Winnfield	Groundwater	105	1,932	Yes
31	HOLUM WATER SYSTEM Grayson	Grayson	Groundwater	102	1,230	Yes
32	DARBONNE WS NORTH Bernice	Bernice	Groundwater	91	3,186	Yes
33	TOWN OF BERNICE WATER SYSTEM Bernice	Bernice	Groundwater	91	1,863	Yes
34	TOWN OF FARMERVILLE WATER SYSTEM Farmerville	Farmerville	Groundwater	89	5,352	Yes
35	CITY OF SHREVEPORT WATER SYSTEM Shreveport	Shreveport	Surface Water	88	192,378	Yes
36	VILLAGE OF DUBACH WATER SYSTEM Dubach	Dubach	Groundwater	86	1,218	Yes
37	WEST STERLINGTON WATER SYSTEM Sterlington	Sterlington	Groundwater	85	1,095	Yes
38	INTRACOASTAL WATER SYSTEM WEST Plaquemine	Plaquemine	Surface Water	84	6,489	Yes
39	VILLAGE OF CHATHAM WATER SYSTEM Chatham	Chatham	Groundwater	83	1,557	Yes
40	CITY OF MANSFIELD WATER SYSTEM Mansfield	Mansfield	Surface Water	77	7,512	Yes
41	SOUTH TOLEDO BEND WATER DISTRICT Many	Many	Groundwater	74	5,943	Yes
42	KEATCHIE WATER SYSTEM Grand Cane	Grand Cane	Groundwater	70	4,446	Yes
43	DARBONNE WS SOUTH Bernice	Bernice	Groundwater	69	3,261	Yes
44	TOWN OF MAMOU WATER SYSTEM Mamou	Mamou	Groundwater	63	4,559	Yes
45	VILLAGE OF PALMETTO WATER SYSTEM Palmetto	Palmetto	Groundwater	63	2,178	Yes
46	CAMERON PARISH WATER AND WW DISTRICT 1 Cameron	Cameron	Groundwater	60	1,798	Yes
47	UNITED WATER SYSTEM Arnaudville	Arnaudville	Groundwater	58	4,446	Yes
48	ROCKY BRANCH WATER SYSTEM Farmerville	Farmerville	Groundwater	55	1,650	Yes
49	EAST DESOTO WATER SYSTEM Mansfield	Mansfield	Groundwater	55	1,455	Yes
50	TOWN OF LOGANSPORT WATER SYSTEM Logansport	Logansport	Surface Water	54	2,448	Yes
51	INDIAN VILLAGE WATER SYSTEM Calhoun	Calhoun	Groundwater	54	2,082	Yes
52	L&R NORTH WATER SYSTEM West Monroe	West Monroe	Groundwater	54	1,293	Yes
53	POINT WILHITE WS Downsville	Downsville	Groundwater	47	2,292	Yes
54	SOUTH MONROE WS GOWC West Monroe	West Monroe	Groundwater	46	7,335	Yes
55	TOWN OF JONESBORO WATER SYSTEM Jonesboro	Jonesboro	Groundwater	44	6,231	Yes
56	BETTER WATERWORKS WATER SYSTEM West Monroe	West Monroe	Groundwater	44	2,160	Yes
57	SABINE PARISH WATER DISTRICT 1 Many	Many	Groundwater	43	6,924	Yes
58	RIVER ROAD WATER SYSTEM Rayville	Rayville	Groundwater	43	3,510	Yes
59	TOWN OF RAYVILLE WATER SYSTEM Rayville	Rayville	Groundwater	41	4,842	Yes
60	SOUTHWEST OUACHITA WATERWORKS, INC West Monroe	West Monroe	Groundwater	40	10,725	Yes
61	VILLAGE OF PLEASANT HILL WATER SYSTEM Pleasant Hill	Pleasant Hill	Groundwater	39	990	Yes
62	HOLMESVILLE WATER SYSTEM Downsville	Downsville	Groundwater	38	2,406	Yes
63	PECAN ISLAND WW DISTRICT NO 3 Kaplan	Kaplan	Groundwater	38	1,230	Yes
64	CULBERTSON WATER SYSTEM Choudrant	Choudrant	Groundwater	37	3,300	Yes
65	DESOTO PARISH WATER WORKS DISTRICT 1 Mansfield	Mansfield	Surface Water	35	7,173	Yes
66	ASCENSION CONSOLIDATED UTILITY DIST 1 Donaldsonville	Donaldsonville	Surface Water	34	2,229	Yes
67	VERMILION WATERWORKS DISTRICT 1 Maurice	Maurice	Groundwater	33	24,132	Yes
68	MAMOU ROAD WATER DISTRICT, INC Eunice	Eunice	Groundwater	32	2,478	Yes
69	VILLAGE WATER SYSTEM Benton	Benton	Groundwater	31	10,890	Yes
70	TOWN OF ST JOSEPH WATER SYSTEM St Joseph	St Joseph	Groundwater	31	1,332	Yes
71	CITY OF LAKE PROVIDENCE WATER SYSTEM Lake Providence	Lake Providence	Groundwater	30	5,850	Yes
72	TALLULAH WATER SYSTEM Tallulah	Tallulah	Groundwater	29	8,601	Yes
73	SOUTHWEST ALLEN WW DISTRICT NO 2 Kinder	Kinder	Groundwater	29	8,106	Yes
74	SOUTHWEST AVOYELLES WATER DISTRICT Bunkie	Bunkie	Groundwater	27	1,053	Yes
75	TOWN OF MANY WATER SYSTEM Many	Many	Surface Water	26	4,428	Yes
76	WESTON WATER SYSTEM Jonesboro	Jonesboro	Groundwater	26	1,980	Yes
77	TENSAS WATER DISTRICT ASSOCIATION St Joseph	St Joseph	Surface Water	25	3,843	Yes
78	MONTICELLO WATER SYSTEM Lake Providence	Lake Providence	Groundwater	25	1,104	Yes
79	SLIDELL WATER SUPPLY Slidell	Slidell	Groundwater	24	35,547	Yes
80	EGAN WATER CORPORATION Egan	Egan	Groundwater	24	5,337	Yes
81	WEST ALLEN PARISH WATER SYSTEM Reeves	Reeves	Groundwater	24	3,582	Yes
82	EAST COLUMBIA WATER SYSTEM Columbia	Columbia	Groundwater	24	2,829	Yes
83	TOWN OF IOTA WATER SYSTEM Iota	Iota	Groundwater	24	1,842	Yes
84	DALCOUR WATERWORKS DISTRICT Belle Chasse	Belle Chasse	Surface Water	24	1,248	Yes
85	TOWN OF GREENWOOD WATER SYSTEM Greenwood	Greenwood	Surface Water	23	5,205	Yes
86	TOWN OF HOMER WATER SYSTEM Denham Springs	Denham Springs	Groundwater	23	4,524	Yes
87	ASSUMPTION PARISH WW DISTRICT 1 Napoleonville	Napoleonville	Surface Water	22	21,366	Yes
88	WEST MONROE WATER SYSTEM West Monroe	West Monroe	Groundwater	22	16,005	Yes
89	BAYOU TECHE WATER WORKS Loreauville	Loreauville	Groundwater	22	10,137	Yes
90	SOUTH BOSSIER WATER SYSTEM Elm Grove	Elm Grove	Groundwater	22	1,755	Yes
91	WEST HWY 80 ARK ROAD WS West Monroe	West Monroe	Groundwater	21	14,649	Yes
92	TOWN OF COLFAX Colfax	Colfax	Groundwater	21	2,552	Yes
93	TOWN OF RINGGOLD WATER SYSTEM Ringgold	Ringgold	Groundwater	21	2,283	Yes
94	TOWN OF ROSELAND WATER SYSTEM Roseland	Roseland	Groundwater	21	1,521	Yes
95	GULF STREAM MANOR WATER SYSTEM Lake Charles	Lake Charles	Groundwater	21	1,368	Yes
96	NEW CARROLL WATER SYSTEM Kilbourne	Kilbourne	Groundwater	20	3,507	Yes
97	SLIGO WATER SYSTEM INCORPORATED Coushatta	Coushatta	Groundwater	20	2,850	Yes
98	WEST FELICIANA CONSOL WWKS DISTRICT 13 St. Francisville	St. Francisville	Groundwater	19	12,045	Yes
99	TOWN OF NEW LLANO WATER SYSTEM New Llano	New Llano	Groundwater	19	3,300	Yes
100	ST MARTIN WATER DISTRICT 4 - CATAHOULA St. Martinville	St. Martinville	Groundwater	19	3,000	Yes
101	TOWN OF OLLA WATER SYSTEM Olla	Olla	Groundwater	19	2,565	Yes
102	VILLAGE OF HARRISONBURG WATER SYSTEM Harrisonburg	Harrisonburg	Groundwater	19	1,530	Yes
103	VILLAGE OF PARKS WATER SYSTEM Parks	Parks	Groundwater	18	12,801	Yes
104	CECILIA WATER CORPORATION Cecilia	Cecilia	Groundwater	18	12,420	Yes
105	WINNSBORO WATER SYSTEM Winnsboro	Winnsboro	Groundwater	18	7,518	Yes
106	TOWN OF SUNSET WATER SYSTEM Sunset	Sunset	Groundwater	18	4,356	Yes
107	TOWN OF OAK GROVE WATER SYSTEM Oak Grove	Oak Grove	Groundwater	18	2,955	Yes
108	CENTRAL GRANT WATER SYSTEM Dry Prong	Dry Prong	Groundwater	18	2,250	Yes
109	LAWCO - MANSURA WATER SYSTEM Baton Rouge	Baton Rouge	Groundwater	18	1,878	Yes
110	WARD 3 WATER ASSOCIATION Bastrop	Bastrop	Groundwater	18	1,662	Yes
111	VILLAGE OF GRAYSON WATER SYSTEM Grayson	Grayson	Groundwater	18	1,461	Yes
112	TOWN OF BLANCHARD WATER SYSTEM Blanchard	Blanchard	Surface Water	17	16,326	Yes
113	REDDELL VIDRINE WATER DISTRICT Ville Platte	Ville Platte	Groundwater	17	2,952	Yes
114	TOWN OF SIBLEY WATER SYSTEM Sibley	Sibley	Groundwater	17	2,373	Yes
115	TOWN OF GUEYDAN WATER SYSTEM Gueydan	Gueydan	Groundwater	17	2,016	Yes
116	TOWN OF GRAND COTEAU WATER SYSTEM Grand Coteau	Grand Coteau	Groundwater	17	1,650	Yes
117	BARKSDALE AFB WATER SYSTEM Barksdale Afb	Barksdale Afb	Surface Water	16	13,000	Yes
118	TURKEY CREEK WATER SYSTEM Gilbert	Gilbert	Groundwater	16	3,429	Yes
119	EGAN WATER CORPORATION NO 2 Egan	Egan	Groundwater	16	2,835	Yes
120	TOWN OF KENTWOOD WATER SYSTEM Kentwood	Kentwood	Groundwater	16	2,205	Yes
121	VILLAGE OF CHOUDRANT WATER SYSTEM Choudrant	Choudrant	Groundwater	16	1,950	Yes
122	VILLAGE OF GREENSBURG WATER SYSTEM Greensburg	Greensburg	Groundwater	16	1,340	Yes
123	BEEKMAN WATER SYSTEM Gilbert	Gilbert	Groundwater	16	1,275	Yes
124	BAYOU MACON WATER SYSTEM Delhi	Delhi	Groundwater	16	1,041	Yes
125	WATER & SEWER COMMISSION 4 OF ST MARY Charenton	Charenton	Surface Water	15	9,709	Yes
126	NORTH OF CROWLEY WATER CORPORATION Rayne	Rayne	Groundwater	15	4,020	Yes
127	EAST ALLEN PARISH WATER WORKS Oberlin	Oberlin	Groundwater	15	3,030	Yes
128	TOWN OF WISNER WATER SYSTEM Wisner	Wisner	Groundwater	15	1,221	Yes
129	VILLAGE OF MONTGOMERY WATER SYSTEM Montgomery	Montgomery	Groundwater	15	1,167	Yes
130	CITY OF OPELOUSAS WATER SYSTEM Opelousas	Opelousas	Groundwater	14	20,388	Yes
131	PARISH UTILITIES OF ASCENSION Donaldsonville	Donaldsonville	Surface Water	14	9,732	Yes
132	IBERIA WATER WORKS DISTRICT 3 - COTEAU New Iberia	New Iberia	Groundwater	14	8,775	Yes
133	ST JAMES WATER DISTRICT 2 Convent	Convent	Surface Water	14	7,513	Yes
134	CITY OF ST MARTINVILLE WATER SYSTEM St. Martinville	St. Martinville	Groundwater	14	7,263	Yes
135	GRAMBLING STATE UNIVERSITY WS Grambling	Grambling	Groundwater	14	6,000	Yes
136	TOWN OF GRAMBLING WATER SYSTEM Grambling	Grambling	Groundwater	14	4,949	Yes
137	TOWN OF COTTONPORT WATER SYSTEM Cottonport	Cottonport	Groundwater	14	3,120	Yes
138	TOWN OF CAMPTI WATER SYSTEM Campti	Campti	Groundwater	14	1,515	Yes
139	WATERWORKS 1 OF MOREHOUSE, INC Bastrop	Bastrop	Groundwater	14	1,266	Yes
140	CITY OF BOGALUSA WATER SYSTEM Bogalusa	Bogalusa	Groundwater	13	14,000	Yes
141	BROWNVILLE WATER SYSTEM West Monroe	West Monroe	Groundwater	13	9,696	Yes
142	BELLEVUE WATER SYSTEM Doyline	Doyline	Groundwater	13	1,236	Yes
143	EAST CARROLL WS SOUTH Transylvania	Transylvania	Groundwater	13	1,071	Yes
144	CITY OF NATCHITOCHES WATER SYSTEM Natchitoches	Natchitoches	Surface Water	12	27,693	Yes
145	CITY OF YOUNGSVILLE WATER SYSTEM Youngsville	Youngsville	Groundwater	12	10,614	Yes
146	ST JOHN WATER DISTRICT 1 Laplace	Laplace	Surface Water	12	10,484	Yes
147	CITY OF WINNFIELD WATER SYSTEM Winnfield	Winnfield	Groundwater	12	7,194	Yes
148	TOWN OF LUTCHER WATERWORKS Lutcher	Lutcher	Surface Water	12	4,781	Yes
149	TOWN OF CULLEN WATER SYSTEM Cullen	Cullen	Groundwater	12	1,236	Yes
150	NEW ORLEANS ALGIERS WATER WORKS New Orleans	New Orleans	Surface Water	11	52,785	Yes
151	CITY OF VILLE PLATTE WATER SYSTEM Ville Platte	Ville Platte	Groundwater	11	6,590	Yes
152	TOWN OF FRANKLINTON WATER SYSTEM Franklinton	Franklinton	Groundwater	11	4,150	Yes
153	TOWN OF ARCADIA WATER SYSTEM Arcadia	Arcadia	Groundwater	11	4,146	Yes
154	TOWN OF VIVIAN WATER SYSTEM Vivian	Vivian	Surface Water	11	4,050	Yes
155	TOWN OF COUSHATTA WATER SYSTEM Coushatta	Coushatta	Groundwater	11	3,300	Yes
156	TOWN OF KINDER WATER SYSTEM Kinder	Kinder	Groundwater	11	3,195	Yes
157	TOWN OF GRAMERCY WATERWORKS Gramercy	Gramercy	Surface Water	11	2,860	Yes
158	TOWN OF WHITE CASTLE WATER SYSTEM White Castle	White Castle	Groundwater	11	2,550	Yes
159	BLACK RIVER WATER SYSTEM Harrisonburg	Harrisonburg	Groundwater	11	2,256	Yes
160	CAMERON PARISH WW DISTRICT 11 - BIG LAKE Bell City	Bell City	Groundwater	11	1,620	Yes
161	ALLEN PARISH WW DISTRICT NO 1 Oakdale	Oakdale	Groundwater	11	1,266	Yes
162	JENKINS COMMUNITY WATER SYSTEM Doyline	Doyline	Groundwater	11	1,026	Yes
163	TOWN OF GIBSLAND WATER SYSTEM Gibsland	Gibsland	Groundwater	11	979	Yes
164	CITY OF PINEVILLE WATER SYSTEM Pineville	Pineville	Groundwater	10	20,358	Yes
165	WALNUT BAYOU WATER ASSOCIATION Tallulah	Tallulah	Groundwater	10	3,531	Yes
166	VILLAGE OF CANKTON WATER SYSTEM Cankton	Cankton	Groundwater	10	2,730	Yes
167	TE MAMOU WATER DISTRICT Ville Platte	Ville Platte	Groundwater	10	2,259	Yes
168	BELAH FELLOWSHIP WATER SYSTEM Jena	Jena	Groundwater	10	1,806	Yes
169	TOWN OF ELTON WATER SYSTEM Elton	Elton	Groundwater	10	1,512	Yes
170	BAYOU PIERRE WATER SYSTEM Coushatta	Coushatta	Groundwater	10	1,371	Yes
171	HAGEWOOD WATER SYSTEM Provencal	Provencal	Groundwater	10	1,017	Yes
172	CITY OF ABBEVILLE WATER SYSTEM Abbeville	Abbeville	Groundwater	9	14,217	Yes
173	CITY OF PATTERSON WATER SYSTEM Patterson	Patterson	Surface Water	9	8,456	Yes
174	CITY OF OAKDALE WATER SYSTEM Oakdale	Oakdale	Groundwater	9	6,114	Yes
175	TOWN OF HAUGHTON WATER SYSTEM Haughton	Haughton	Groundwater	9	5,355	Yes
176	LAKEVIEW WATER SYSTEM Shreveport	Shreveport	Surface Water	9	2,025	Yes
177	TOWN OF WASHINGTON WATER SYSTEM Washington	Washington	Groundwater	9	1,713	Yes
178	CHENIERE DREW SOUTH WATER SYSTEM West Monroe	West Monroe	Groundwater	9	1,563	Yes
179	VILLAGE OF CHENEYVILLE WATER SYSTEM Cheneyville	Cheneyville	Groundwater	9	1,531	Yes
180	WARD 6 WATER ASSOCIATION OF RAPIDES Glenmora	Glenmora	Groundwater	9	1,410	Yes
181	TOWN OF LEONVILLE WATER SYSTEM Leonville	Leonville	Groundwater	8	9,552	Yes
182	CALCASIEU PARISH WW DISTRICT NO 4 Westlake	Westlake	Groundwater	8	5,340	Yes
183	TOWN OF JENA WATER SYSTEM Jena	Jena	Groundwater	8	3,614	Yes
184	CAMERON PARISH WW DISTRICT 11-SWEET LAKE Bell City	Bell City	Groundwater	8	3,507	Yes
185	WEST GRANT WATER ASSOCIATION Alanta	Alanta	Groundwater	8	3,324	Yes
186	ST MARTIN WATER WORKS DISTRICT 3 - CADE St. Martinville	St. Martinville	Groundwater	8	3,249	Yes
187	TOWN OF SIMMESPORT WATER SYSTEM Simmesport	Simmesport	Groundwater	8	2,142	Yes
188	BLOCKER WATER SYSTEM Sarepta	Sarepta	Groundwater	8	1,719	Yes
189	VILLAGE OF SAREPTA WATER SYSTEM Minden	Minden	Groundwater	8	1,500	Yes
190	ALABAMA WATER SYSTEM Arcadia	Arcadia	Groundwater	8	948	Yes
191	PINEHILL WATERWORKS DISTRICT Shreveport	Shreveport	Surface Water	7	4,926	Yes
192	TOWN OF CHURCH POINT WATER SYSTEM Church Point	Church Point	Groundwater	7	4,176	Yes
193	VILLAGE OF DRY PRONG WATER SYSTEM Dry Prong	Dry Prong	Groundwater	7	1,155	Yes
194	WESTVIEW WATER WORKS Amite	Amite	Groundwater	7	1,134	Yes
195	VILLAGE OF MORSE WATER SYSTEM Morse	Morse	Groundwater	7	1,065	Yes
196	DOYLINE WATERWORKS DISTRICT 1 Doyline	Doyline	Groundwater	7	969	Yes
197	ST BERNARD PARISH WATERWORKS Chalmette	Chalmette	Surface Water	6	44,783	Yes
198	EAST FELICIANA RURAL WATER Ethel	Ethel	Groundwater	6	14,829	Yes
199	WESTWEGO WATERWORKS Westwego	Westwego	Surface Water	6	8,534	Yes
200	EAST SIDE WATER SYSTEM Ville Platte	Ville Platte	Groundwater	6	5,640	Yes
201	FOURTH WARD WATER WORKS Albany	Albany	Groundwater	6	4,839	Yes
202	SOUTH RAYNE WATER CORPORATION Rayne	Rayne	Groundwater	6	4,254	Yes
203	BROUILLETTE WATER SYSTEM INC Marksville	Marksville	Groundwater	6	3,732	Yes
204	LASALLE WATERWORKS DISTRICT 1 Trout	Trout	Groundwater	6	3,240	Yes
205	FISKE UNION WATER SYSTEM Oak Grove	Oak Grove	Groundwater	6	1,830	Yes
206	WARDS 4 & 5 WATER SYSTEM Grayson	Grayson	Groundwater	6	1,002	Yes
207	W JEFFERSON WW DISTRICT 2 Jefferson	Jefferson	Surface Water	5	140,264	Yes
208	CITY OF BAKER WATER SYSTEM Baker	Baker	Groundwater	5	13,855	Yes
209	CITY OF MORGAN CITY WATER SYSTEM Morgan City	Morgan City	Surface Water	5	12,703	Yes
210	CITY OF LEESVILLE WATER SYSTEM Leesville	Leesville	Groundwater	5	10,545	Yes
211	CITY OF BROUSSARD HWY 90 WATER SYSTEM Broussard	Broussard	Groundwater	5	4,182	Yes
212	TOWN OF HAYNESVILLE WATER SYSTEM Haynesville	Haynesville	Groundwater	5	3,600	Yes
213	POINT BLUE/CHATAIGINER WATER SYSTEM Ville Platte	Ville Platte	Groundwater	5	3,471	Yes
214	VILLAGE OF HESSMER WATER SYSTEM Hessmer	Hessmer	Groundwater	5	3,246	Yes
215	TOWN OF OBERLIN WATER SYSTEM Oberlin	Oberlin	Groundwater	5	2,730	Yes
216	TOWN OF DELCAMBRE WATER SYSTEM Delcambre	Delcambre	Groundwater	5	2,457	Yes
217	DOGWOOD SOUTH WATER SYSTEM Benton	Benton	Groundwater	5	2,304	Yes
218	GERMANTOWN WATER SYSTEM Minden	Minden	Groundwater	5	1,410	Yes
219	TOWN OF COTTON VALLEY WATER SYSTEM Cotton Valley	Cotton Valley	Groundwater	5	1,380	Yes
220	TOWN OF MELVILLE WATER SYSTEM Melville	Melville	Groundwater	5	1,314	Yes
221	LELAND WATER SYSTEM INC Sicily Island	Sicily Island	Groundwater	5	1,140	Yes
222	CITY OF BOSSIER CITY WATER SYSTEM Bossier City	Bossier City	Surface Water	4	79,506	Yes
223	BASTROP WATER SYSTEM Bastrop	Bastrop	Groundwater	4	18,105	Yes
224	WEST BATON ROUGE WATER WORKS DISTRICT 2 Port Allen	Port Allen	Groundwater	4	13,437	Yes
225	CITY OF BREAUX BRIDGE WATER SYSTEM Breaux Bridge	Breaux Bridge	Groundwater	4	10,098	Yes
226	CITY OF JENNINGS WATER SYSTEM Jennings	Jennings	Groundwater	4	9,837	Yes
227	ST TAM PARISH - CROSS GATES SD Covington	Covington	Groundwater	4	8,037	Yes
228	ST MARY WATER & SEWER COMM #3 Centerville	Centerville	Surface Water	4	7,828	Yes
229	PRAIRIE RONDE WATER SYSTEM INC Lawtell	Lawtell	Groundwater	4	6,090	Yes
230	VERNON PARISH WATER AND SEWER COMMISSION New Llano	New Llano	Groundwater	4	5,295	Yes
231	CITY OF BROUSSARD WATER SYSTEM Broussard	Broussard	Groundwater	4	5,151	Yes
232	WESTLAKE CITY OF WATER SYSTEM Westlake	Westlake	Groundwater	4	4,858	Yes
233	CITY OF KAPLAN WATER SYSTEM Kaplan	Kaplan	Groundwater	4	4,340	Yes
234	GREATER WARD 1 WATERWORKS DISTRICT Ruston	Ruston	Groundwater	4	3,333	Yes
235	TOWN OF INDEPENDENCE WATER SYSTEM Independence	Independence	Groundwater	4	3,052	Yes
236	ST MARY PARISH WATER SEWERAGE COMM 1 Amelia	Amelia	Surface Water	4	2,823	Yes
237	EVANGELINE WW DISTRICT 1 - PINE PRAIRIE Pine Prairie	Pine Prairie	Groundwater	4	2,598	Yes
238	NEBO WATER SYSTEM INC Jena	Jena	Groundwater	4	2,460	Yes
239	SUMMERVILLE WATER SYSTEM Jena	Jena	Groundwater	4	1,425	Yes
240	ZONE 2 WATER SYSTEM INC. Colfax	Colfax	Groundwater	4	1,344	Yes
241	MOUNT HERMON WATER DISTRICT Mount Hermon	Mount Hermon	Groundwater	4	1,107	Yes
242	TANGIPAHOA PARISH WATER DISTRICT Natalbany	Natalbany	Groundwater	3	75,873	Yes
243	CITY OF MONROE WATER SYSTEM Monroe	Monroe	Surface Water	3	57,000	Yes
244	CITY OF MINDEN WATER SYSTEM Minden	Minden	Groundwater	3	16,281	Yes
245	HOUMA WATER TREATMENT SERVICE AREA Houma	Houma	Surface Water	3	11,658	Yes
246	POINTE COUPEE WATER WORKS DISTRICT 1 New Roads	New Roads	Groundwater	3	10,629	Yes
247	CITY OF YOUNGSVILLE PURCHASE WS Youngsville	Youngsville	Groundwater	3	7,623	Yes
248	CONCORDIA WATERWORKS DISTRICT 1 Ferriday	Ferriday	Groundwater	3	6,921	Yes
249	HOUSTON RIVER WATERWORKS DISTRICT 11 Sulphur	Sulphur	Groundwater	3	6,915	Yes
250	CITY OF JEANERETTE WATER SYSTEM Jeanerette	Jeanerette	Groundwater	3	6,189	Yes
251	LAWTELL WATER WORKS DISTRICT NO 1 Lawtell	Lawtell	Groundwater	3	3,717	Yes
252	LENA WATER SYSTEM INC Lena	Lena	Groundwater	3	3,540	Yes
253	ST TAMMANY WATER DISTRICT 3 Covington	Covington	Groundwater	3	2,920	Yes
254	TOWN OF JONESVILLE WATER SYSTEM Jonesville	Jonesville	Groundwater	3	2,811	Yes
255	FOLSOM WATER SUPPLY Folsom	Folsom	Groundwater	3	1,992	Yes
256	LIDDIEVILLE WATER SYSTEM Winnsboro	Winnsboro	Groundwater	3	1,602	Yes
257	TCHEFUNCTA CLUB ESTATES Covington	Covington	Groundwater	3	1,245	Yes
258	TOWN OF MERRYVILLE WATER SYSTEM Merryville	Merryville	Groundwater	3	1,107	Yes
259	VILLAGE OF GROSSE TETE WATER SYSTEM Grosse Tete	Grosse Tete	Groundwater	3	954	Yes
260	NEW ORLEANS CARROLLTON WATER WORKS New Orleans	New Orleans	Surface Water	2	334,903	Yes
261	CITY OF ALEXANDRIA WATER SYSTEM Alexandria	Alexandria	Groundwater	2	66,798	Yes
262	SULPHUR CITY OF WATER SYSTEM Sulphur	Sulphur	Groundwater	2	24,489	Yes
263	CITY OF HAMMOND WATER SYSTEM Hammond	Hammond	Groundwater	2	21,135	Yes
264	LPWDN NORTH REGION Lafayette	Lafayette	Groundwater	2	16,833	Yes
265	CITY OF BROUSSARD PURCHASE WATER SYSTEM Broussard	Broussard	Groundwater	2	10,242	Yes
266	TOWN OF NEW ROADS WATER SYSTEM New Roads	New Roads	Groundwater	2	9,024	Yes
267	NORTH FRANKLIN WATER WORKS Crowville	Crowville	Groundwater	2	7,989	Yes
268	SPRINGHILL WATER SYSTEM Springhill	Springhill	Groundwater	2	7,800	Yes
269	SAVOY SWORDS WATER SYSTEM INC Eunice	Eunice	Groundwater	2	7,326	Yes
270	PLAISANCE WATER SYSTEM Opelousas	Opelousas	Groundwater	2	6,465	Yes
271	FIFTH WARD WATER SYSTEM Marksville	Marksville	Groundwater	2	5,676	Yes
272	MONTEREY RURAL WATER SYSTEM INC Monterey	Monterey	Groundwater	2	5,250	Yes
273	CITY OF BERWICK Berwick	Berwick	Surface Water	2	5,024	Yes
274	ST LANDRY WATER WORKS DISTRICT 2 RURAL Sunset	Sunset	Groundwater	2	4,761	Yes
275	WEST VERNON PARISH WATERWORKS DISTRICT Anacoco	Anacoco	Groundwater	2	4,365	Yes
276	AVOYELLES WARD ONE WATER SYSTEM INC Effie	Effie	Groundwater	2	3,726	Yes
277	CONSOLIDATED WATERWORKS DISTRICT 2 Bastrop	Bastrop	Groundwater	2	3,498	Yes
278	EMC WATER SYSTEM INC Elmer	Elmer	Groundwater	2	3,135	Yes
279	UTILITIES INC - GREEN BRIER WATER SUPPLY Mandeville	Mandeville	Groundwater	2	2,250	Yes
280	COLUMBIA HEIGHTS WATER DISTRICT Columbia	Columbia	Groundwater	2	1,965	Yes
281	GOODWILL WATER SYSTEM Oak Grove	Oak Grove	Groundwater	2	1,929	Yes
282	BAYOU BONNE IDEE WS Mer Rouge	Mer Rouge	Groundwater	2	1,656	Yes
283	GREENBRIAR PRAIRIE BASSE WATER SYSTEM Sunset	Sunset	Groundwater	2	1,656	Yes
284	UTILITIES INC - MAGNOLIA FOREST SUBD Mandeville	Mandeville	Groundwater	2	1,635	Yes
285	VILLAGE OF FOREST WATER SYSTEM Forest	Forest	Groundwater	2	1,560	Yes
286	TOWN OF FORDOCHE Fordoche	Fordoche	Groundwater	2	1,380	Yes
287	VETERANS ADMINISTRATION Alexandria	Alexandria	Groundwater	2	1,330	Yes
288	TORBERT- FRISCO WATER WORKS New Roads	New Roads	Groundwater	2	1,320	Yes
289	CYPRESS WATER SYSTEM Ringgold	Ringgold	Groundwater	2	1,125	Yes
290	VILLAGE OF SIMPSON WATER SYSTEM Simpson	Simpson	Groundwater	2	1,116	Yes
291	TOWN OF BOYCE WATER SYSTEM Boyce	Boyce	Groundwater	2	1,095	Yes
292	VILLAGE OF SIMSBORO WATER SYSTEM Simsboro	Simsboro	Groundwater	2	1,083	Yes
293	POLAND WATER ASSOCIATION Echo	Echo	Groundwater	2	1,044	Yes
294	STATE OF LA MILITARY DEPT - CAMP MINDEN Minden	Minden	Groundwater	2	1,001	Yes
295	CITY OF COVINGTON WATER SUPPLY Covington	Covington	Groundwater	1	16,185	Yes
296	TOWN OF WALKER WATER SYSTEM Walker	Walker	Groundwater	1	15,813	Yes
297	CALCASIEU PARISH WW DIST 9 CARLYSS Sulphur	Sulphur	Groundwater	1	14,502	Yes
298	CITY OF DERIDDER WATER SYSTEM Deridder	Deridder	Groundwater	1	14,400	Yes
299	CITY OF SCOTT WATER SYSTEM Scott	Scott	Groundwater	1	9,696	Yes
300	KIROLI DARBONNE WS West Monroe	West Monroe	Groundwater	1	9,210	Yes
301	TOWN OF ALBANY WATER SYSTEM Albany	Albany	Groundwater	1	7,305	Yes
302	CALCASIEU PARISH WW DISTRICT 8 Lake Charles	Lake Charles	Groundwater	1	6,834	Yes
303	CITY OF PORT ALLEN WATER SYSTEM Port Allen	Port Allen	Groundwater	1	6,759	Yes
304	TOWN OF VIDALIA WATER SYSTEM Vidalia	Vidalia	Groundwater	1	6,354	Yes
305	TOWN OF WELSH WATER SYSTEM Welsh	Welsh	Groundwater	1	4,311	Yes
306	UTILITIES INC - HAMMOND HEIGHTS Mandeville	Mandeville	Groundwater	1	4,281	Yes
307	TOWN OF VINTON WATER SYSTEM Vinton	Vinton	Groundwater	1	4,101	Yes
308	SOUTH VERNON PARISH WATERWORKS DISTRICT Rosepine	Rosepine	Groundwater	1	4,083	Yes
309	TOWN OF ARNAUDVILLE WATER SYSTEM Arnaudville	Arnaudville	Groundwater	1	3,957	Yes
310	AVOYELLES PARISH WATERWORKS DISTRICT 1 Bordelonville	Bordelonville	Groundwater	1	3,900	Yes
311	ST JOHN WATER DISTRICT 2 Laplace	Laplace	Surface Water	1	3,702	Yes
312	TOWN OF ABITA SPRINGS WATER SYSTEM Abita Springs	Abita Springs	Groundwater	1	3,693	Yes
313	TOWN OF MARINGOUIN Maringouin	Maringouin	Groundwater	1	3,300	Yes
314	EAST RICHLAND WW DISTRICT Delhi	Delhi	Groundwater	1	3,120	Yes
315	WEST WINNSBORO WATER SYSTEM Gilbert	Gilbert	Groundwater	1	3,078	Yes
316	HEBERT WATER SYSTEM Columbia	Columbia	Groundwater	1	3,048	Yes
317	CENTRAL CLAIBORNE WATER SYSTEM Homer	Homer	Groundwater	1	2,859	Yes
318	EAST FELICIANA WWKS DISTRICT 7 Clinton	Clinton	Groundwater	1	2,805	Yes
319	UTILITIES INC- WHITEHALL/ HEAD OF ISLAND Mandeville	Mandeville	Groundwater	1	2,676	Yes
320	TOWN OF BASILE WATER SYSTEM Basile	Basile	Groundwater	1	2,559	Yes
321	UTILITIES INC - FRENCH SETTLEMENT Mandeville	Mandeville	Groundwater	1	2,313	Yes
322	ST MARTIN WATER AND SEWER COMMISSION 1 Morgan City	Morgan City	Surface Water	1	2,262	Yes
323	VILLAGE OF EVERGREEN WATER SYSTEM Evergreen	Evergreen	Groundwater	1	2,205	Yes
324	PIONEER DARNELL WATER SYSTEM Pioneer	Pioneer	Groundwater	1	2,190	Yes
325	ST LANDRY WWD 3 PORT BARRE AREA D Port Barre	Port Barre	Groundwater	1	1,860	Yes
326	PLEASANT VALLEY WATER SYSTEM Minden	Minden	Groundwater	1	1,683	Yes
327	DIXIE OVERLAND WATER SYSTEM Minden	Minden	Groundwater	1	1,455	Yes
328	MARTIN WATER SYSTEM Coushatta	Coushatta	Groundwater	1	1,350	Yes
329	UTILITIES INC - VELMA Mandeville	Mandeville	Groundwater	1	1,302	Yes
330	ST MARY PAR JT WATER SEWER COMMISSION 5 Jeanerette	Jeanerette	Groundwater	1	1,240	Yes
331	HINESTON WATER SYSTEM, INC Hineston	Hineston	Groundwater	1	1,089	Yes
332	VILLAGE OF COLUMBIA WATER SYSTEM Columbia	Columbia	Groundwater	1	945	Yes

Systems with No Violations (168)

168 water systems in Louisiana have zero recorded violations. Showing the 50 largest by population served.

BATON ROUGE WATER COMPANY (596,844) E JEFFERSON WW DISTRICT 1 (275,163) LAFAYETTE UTILITIES WATER SYSTEM (169,389) SCHRIEVER WATER TREATMENT SERVICE AREA (116,460) LAFOURCHE WATER DISTRICT 1 (81,609) CITY OF LAKE CHARLES WATER SYSTEM (79,500) WARD II WATER DISTRICT (78,147) LAWCO - NEW IBERIA WATER SYSTEM (59,928) ST CHARLES PARISH DEPT OF WATERWORKS (52,879) ST JOHN WATER DISTRICT 3 (31,965) ZACHARY WATER SYSTEM (31,569) CITY OF DENHAM SPRINGS WATER SYSTEM (25,725) BEAUREGARD WATER WORKS DIST #3 (24,000) CITY OF RUSTON WATER SYSTEM (22,468) CALCASIEU PARISH WW DISTRICT NO 1 (20,837) RAPIDES PARISH WATERWORKS DISTRICT 3 (19,983) BELLE CHASSE WATER DISTRICT (19,644) ST TAM PARISH- BEDICO -FAUBOURG-COQUILLE (18,372) LAWCO - CROWLEY WATER SYSTEM (17,733) ST TAM PARISH - BRIARWOOD TERRACE (17,536) GRETNA WATERWORKS (17,026) CITY OF GONZALES WATER SYSTEM (16,806) LAWCO - EUNICE WATER SYSTEM (15,393) LPWD SOUTH (15,132) THIBODAUX WATERWORKS (14,862) CITY OF PLAQUEMINE WATER SYSTEM (14,043) GOWC NORTH WATER SYSTEM (13,287) CITY OF MANDEVILLE WATER SUPPLY (13,000) BUCKEYE WATER DISTRICT 50 (12,078) GOWC EAST WATER SYSTEM (11,742) CITY OF CARENCRO WATER SYSTEM (11,301) UTILITIES INC - NORTH PARK WATER SUPPLY (11,298) CHENIERE DREW NORTH WATER SYSTEM (11,280) CITY OF RAYNE WATER SYSTEM (10,908) FORT POLK SOUTH WATER SYSTEM (10,902) BAYOU LIBERTY WATER ASSOCIATION (10,791) MILTON WATER SYSTEM (10,200) JEFF DAVIS WATER AND SEWER COMMISSION 1 (9,780) MIRE BRANCH WATER CORPORATION (9,480) FORT POLK NORTH WATER SYSTEM (9,420) TOWN OF LIVINGSTON WATER SYSTEM (8,946) WWKS DISTRICT 2 OF ST HELENA (8,772) MAGNOLIA PLANTATION WATER SYSTEM INC (8,769) NATCHITOCHES PARISH WWKS DISTRICT 2 (8,415) LEWISBURG BELLEVUE WATER SYSTEM (8,226) TOWN OF BENTON WATER SYSTEM (8,037) LEE ROAD WATER CORPORATION (7,665) NORTH DESOTO WATER SYSTEM (7,608) CITY OF MARKSVILLE WATER SYSTEM (7,593) ST JAMES WATER DISTRICT 1 (7,200) +118 more

All Water Systems in Louisiana (815)

Page 13 of 17, ordered by population served.

System	Population Served	Violations
SOUTHEAST GRANT WATER SYSTEM	567	5
CHESTNUT-READHIMER WATER SYSTEM	564	27
VILLAGE OF CONVERSE WATER SYSTEM	561	70
CENTRAL WATER SYSTEM	558	5
WBR DISTRICT 4 - ARBROTH	555	0
LINCOLN HILLS SUBDIVISION WS	552	49
VILLAGE OF NOBLE WATER SYSTEM	549	39
PLEASANT RIDGE WATER SYSTEM	540	39
VILLAGE OF GOLDONNA WATER SYSTEM	540	3
LA CASA LLC	540	4
PLEASURE BEND WATER SUPPLY	528	36
ST LANDRY WATERWORKS DISTRICT NO. 5	519	0
ST LANDRY WWD 3 PORT BARRE AREA B	516	14
NORTHWEST WATERWORKS LIN PARK	513	0
TREMONT WATER DISTRICT	510	2
VILLAGE OF HEFLIN WATER SYSTEM	504	0
SPILLWAY ESTATES WATER SYSTEM	501	109
MARINA DEL RAY WATER SYSTEM	500	2
ST TAM PARISH - ALTON	499	0
HALFWAY-CARROLL WATER SYSTEM	498	1
JAMESTOWN FRYEBURG WATER SYSTEM	495	1
VILLAGE OF IDA WATER SYSTEM	495	4
ROGERS COMMUNITY WATER SYSTEM INC	495	5
VILLAGE OF ATHENS WATER SYSTEM	486	2
ST TAM PARISH - NORTHLAKE BEHAVIORAL	480	2
VILLAGE OF HODGE WATER SYSTEM	479	3
JOYCE WATER SUPPLY	474	70
CARTER PLANTATION	472	1
GARDEN HEIGHTS WATER SYSTEM	465	0
UNION GROVE WATER SYSTEM	456	6
EAST CROSS WATER SYSTEM	453	5
DIVERSION WATER - BAYOU ESTATES	450	0
VILLAGE OF SALINE WATER SYSTEM	450	62
HIDDEN OAKS SUBDIVISION WS	438	54
VILLAGE OF CASTOR WATER SYSTEM	435	19
BEAR CREEK WATER SYSTEM	435	8
VILLAGE OF NORTH HODGE WATER SYSTEM	429	15
CHEE CHEE BAY WATER SYSTEM	429	0
LPWDN HOLIDAY MOBILE ESTATES WS	426	0
VILLAGE OF BONITA WATER SYSTEM	426	36
NORTHWEST WATERWORKS LAKEWOOD VILLAGE	423	0
WALKER COMMUNITY SYSTEM	417	1
VILLAGE GUTHRIE SUBDIVISION	405	2
THE SALLIER MHC WATER SYSTEM	400	0
PORT OF WEST ST MARY	400	16
VILLAGE OF ANGIE WATER SUPPLY	400	2
CYPRESS VILLAGE MHP WATER SYSTEM	396	0
OLD SALINE COMMUNITY WATER SYSTEM	390	8
WHEELING WATER SYSTEM INC	381	9
FAIRVIEW MOBILE ESTATES SOUTH WS	378	1

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Frequently Asked Questions

How many water systems are in Louisiana?

Louisiana has 815 community water systems tracked by the EPA, serving a combined population of 5,165,961 people.

How many water systems in Louisiana have health violations?

544 water systems in Louisiana have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 67% of all systems in the state.

How many health-based violation records are in this extract for Louisiana?

PlainEnviro's health-based EPA SDWIS extract contains 14,536 records joined to 815 active community water systems in Louisiana. Monitoring and reporting records are not included.

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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