Texas Water Systems

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

4,587 community water systems in Texas, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems

4,587

Total Violations

33,822

Health Violations

1,807 systems

Population Served

32,293,308

Texas operates 4,587 community water systems regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. Together these utilities serve an estimated 32,293,308 residents, each filing compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency.

Across the state, SDWIS records contain 33,822 total violations, of which 1807 systems carry at least one active health-based violation, a Maximum Contaminant Level (MCL) exceedance or treatment-technique failure. That represents roughly 39% of Texas systems.

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? (164)

#	System Name	City	Source	Violations	Pop. Served	Health
1	CITY OF WOLFFORTH Wolfforth	Wolfforth	Surface Water	190	9,600	Yes
2	CITY OF ANDREWS Andrews	Andrews	Groundwater	149	14,109	Yes
3	ORANGE COUNTY WCID 1 Vidor	Vidor	Groundwater	142	15,258	Yes
4	CRYSTAL CLEAR SUD San Marcos	San Marcos	Surface Water	93	20,766	Yes
5	WEBB COUNTY WATER UTILITIES Laredo	Laredo	Surface Water	79	8,358	Yes
6	WALNUT CREEK SUD Springtown	Springtown	Surface Water	67	30,364	Yes
7	HUDSON WSC Lufkin	Lufkin	Groundwater	66	10,907	Yes
8	MILITARY HWY WSC LAS RUSIAS Progreso	Progreso	Surface Water	65	17,943	Yes
9	CITY OF PORT LAVACA Port Lavaca	Port Lavaca	Surface Water	57	11,545	Yes
10	CITY OF BEEVILLE Beeville	Beeville	Surface Water	56	13,664	Yes
11	CITY OF KERRVILLE Kerrville	Kerrville	Surface Water	55	23,489	Yes
12	CITY OF BASTROP Bastrop	Bastrop	Surface Water	50	13,209	Yes
13	KEMPNER WSC Kempner	Kempner	Surface Water	45	17,721	Yes
14	CITY OF TEMPLE Temple	Temple	Surface Water	44	94,935	Yes
15	CITY OF BIG SPRING Big Spring	Big Spring	Surface Water	43	27,282	Yes
16	CITY OF TYLER Tyler	Tyler	Surface Water	35	107,000	Yes
17	CITY OF COMMERCE Commerce	Commerce	Surface Water	34	9,266	Yes
18	ATASCOSA RURAL WSC Atascosa	Atascosa	Surface Water	33	13,905	Yes
19	CITY OF PFLUGERVILLE Pflugerville	Pflugerville	Surface Water	29	63,464	Yes
20	CITY OF LA GRULLA La Grulla	La Grulla	Surface Water	25	9,500	Yes
21	STEAMBOAT MOUNTAIN WSC Tuscola	Tuscola	Surface Water	24	8,178	Yes
22	NUECES COUNTY WCID 3 Robstown	Robstown	Surface Water	23	14,000	Yes
23	CITY OF JACKSONVILLE Jacksonville	Jacksonville	Surface Water	22	14,420	Yes
24	CITY OF BAY CITY Bay City	Bay City	Groundwater	20	18,061	Yes
25	TRAIL OF THE LAKES MUD Houston	Houston	Groundwater	20	9,471	Yes
26	CITY OF HORSESHOE BAY Horseshoe Bay	Horseshoe Bay	Surface Water	19	12,729	Yes
27	SPRINGS HILL SUD Seguin	Seguin	Surface Water	18	35,472	Yes
28	CITY OF ROMA Roma	Roma	Surface Water	15	19,464	Yes
29	G M WSC Hemphill	Hemphill	Surface Water	15	11,220	Yes
30	CITY OF HITCHCOCK Hitchcock	Hitchcock	Surface Water	14	8,379	Yes
31	CITY OF MIDLAND WATER PURIFICATION PLANT Midland	Midland	Surface Water	13	157,000	Yes
32	CITY OF NACOGDOCHES Nacogdoches	Nacogdoches	Surface Water	12	50,226	Yes
33	CITY OF NEDERLAND Nederland	Nederland	Surface Water	12	18,856	Yes
34	NUECES COUNTY WCID 4 Port Aransas	Port Aransas	Surface Water	12	14,880	Yes
35	EAST CEDAR CREEK FWSD BROOKSHIRE Mabank	Mabank	Surface Water	12	14,823	Yes
36	CITY OF BURKBURNETT Burkburnett	Burkburnett	Surface Water	12	10,978	Yes
37	CITY OF AUSTIN WATER & WASTEWATER Austin	Austin	Surface Water	11	1,115,323	Yes
38	AGUA SUD Mission	Mission	Surface Water	11	52,137	Yes
39	CITY OF CORPUS CHRISTI Corpus Christi	Corpus Christi	Surface Water	10	318,387	Yes
40	WELLBORN SUD Wellborn	Wellborn	Surface Water	10	25,065	Yes
41	CITY OF GAINESVILLE Gainesville	Gainesville	Surface Water	10	18,107	Yes
42	CITY OF ATHENS Athens	Athens	Surface Water	10	17,934	Yes
43	CITY OF MONT BELVIEU Mont Belvieu	Mont Belvieu	Groundwater	10	12,864	Yes
44	ELDERVILLE WSC Longview	Longview	Surface Water	10	9,021	Yes
45	CITY OF SEGUIN Seguin	Seguin	Surface Water	9	32,736	Yes
46	CITY OF PALESTINE Palestine	Palestine	Surface Water	9	31,272	Yes
47	CITY OF MARSHALL Marshall	Marshall	Surface Water	9	23,091	Yes
48	CITY OF WHITE SETTLEMENT White Settlement	White Settlement	Surface Water	9	18,522	Yes
49	CITY OF SAN ANGELO San Angelo	San Angelo	Surface Water	8	105,229	Yes
50	JONAH WATER SUD Hutto	Hutto	Surface Water	8	29,861	Yes
51	LAMAR COUNTY WATER SUPPLY DISTRICT Paris	Paris	Surface Water	8	25,530	Yes
52	CITY OF RIO GRANDE CITY Rio Grande	Rio Grande	Surface Water	8	18,912	Yes
53	CYPRESS SPRINGS SUD N PLANT 1 AND NE PLA Mount Vernon	Mount Vernon	Surface Water	8	13,698	Yes
54	WEST JEFFERSON COUNTY MWD Beaumont	Beaumont	Surface Water	8	9,367	Yes
55	CITY OF LIBERTY HILL Liberty Hill	Liberty Hill	Surface Water	8	8,777	Yes
56	CITY OF LAREDO Laredo	Laredo	Surface Water	7	260,046	Yes
57	GOFORTH SUD Niederwald	Niederwald	Surface Water	7	34,893	Yes
58	CITY OF BOERNE Boerne	Boerne	Surface Water	7	24,769	Yes
59	CITY OF GROVES Groves	Groves	Surface Water	7	16,452	Yes
60	NORTH ALAMO WSC Edinburg	Edinburg	Surface Water	6	171,195	Yes
61	SJWTX TRIPLE PEAK PLANT Canyon Lake	Canyon Lake	Surface Water	6	32,973	Yes
62	CITY OF BRENHAM Brenham	Brenham	Surface Water	6	18,469	Yes
63	CITY OF MINERAL WELLS Mineral Wells	Mineral Wells	Surface Water	6	15,564	Yes
64	MONTGOMERY COUNTY MUD 60 The Woodlands	The Woodlands	Surface Water	6	15,036	Yes
65	HARRIS COUNTY MUD 157 Houston	Houston	Surface Water	6	12,087	Yes
66	CITY OF BRIDGE CITY Bridge City	Bridge City	Groundwater	6	9,546	Yes
67	WALNUT GROVE WSC Whitehouse	Whitehouse	Surface Water	6	8,775	Yes
68	CITY OF PORT ARTHUR Port Arthur	Port Arthur	Surface Water	5	56,039	Yes
69	MANVILLE WSC Coupland	Coupland	Surface Water	5	39,648	Yes
70	CITY OF PARIS Paris	Paris	Surface Water	5	25,171	Yes
71	CITY OF PORTLAND Portland	Portland	Surface Water	5	22,933	Yes
72	HEREFORD MUNICIPAL WATER SYSTEM Hereford	Hereford	Groundwater	5	16,048	Yes
73	CITY OF LAGO VISTA Lago Vista	Lago Vista	Surface Water	5	8,698	Yes
74	ORANGEFIELD WSC Orangefield	Orangefield	Groundwater	5	8,231	Yes
75	CITY OF KYLE Kyle	Kyle	Surface Water	4	52,000	Yes
76	CITY OF FORNEY Forney	Forney	Surface Water	4	29,692	Yes
77	WEST TRAVIS COUNTY PUBLIC UTILITY AGENCY Austin	Austin	Surface Water	4	28,215	Yes
78	PORTER SPECIAL UTILITY DISTRICT Porter	Porter	Groundwater	4	26,388	Yes
79	ACTON MUD Granbury	Granbury	Surface Water	4	20,458	Yes
80	SONTERRA MUD Austin	Austin	Surface Water	4	16,614	Yes
81	CITY OF MABANK Mabank	Mabank	Surface Water	4	15,207	Yes
82	ZAPATA COUNTY WATERWORKS SWTP Zapata	Zapata	Surface Water	4	13,736	Yes
83	BI COUNTY WSC 1 Pittsburg	Pittsburg	Groundwater	4	12,777	Yes
84	MEMORIAL VILLAGES WATER AUTHORITY Houston	Houston	Surface Water	4	11,382	Yes
85	CITY OF BELLMEAD Bellmead	Bellmead	Groundwater	4	10,664	Yes
86	MISSION BEND MUD 2 Houston	Houston	Groundwater	4	10,155	Yes
87	BUENA VISTA BETHEL SUD Waxahachie	Waxahachie	Groundwater	4	8,218	Yes
88	CITY OF FORT WORTH Fort Worth	Fort Worth	Surface Water	3	955,900	Yes
89	CITY OF ABILENE Abilene	Abilene	Surface Water	3	125,182	Yes
90	CITY OF ODESSA Odessa	Odessa	Surface Water	3	123,334	Yes
91	CITY OF EDINBURG Edinburg	Edinburg	Surface Water	3	85,224	Yes
92	CITY OF TEXAS CITY Texas City	Texas City	Surface Water	3	54,357	Yes
93	CLWSC CANYON LAKE SHORES Canyon Lake	Canyon Lake	Surface Water	3	44,196	Yes
94	CITY OF SAN BENITO San Benito	San Benito	Surface Water	3	24,250	Yes
95	CITY OF ANNA Anna	Anna	Surface Water	3	23,960	Yes
96	CITY OF SULPHUR SPRINGS Sulphur Springs	Sulphur Springs	Surface Water	3	16,243	Yes
97	HARRIS COUNTY MUD 24 Houston	Houston	Surface Water	3	14,796	Yes
98	CITY OF DUMAS Dumas	Dumas	Groundwater	3	14,290	Yes
99	HARRIS COUNTY WCID 21 Channelview	Channelview	Surface Water	3	13,845	Yes
100	CITY OF ROCKPORT Rockport	Rockport	Surface Water	3	11,186	Yes
101	CITY OF GALENA PARK Galena Park	Galena Park	Surface Water	3	10,487	Yes
102	OLMITO WSC Olmito	Olmito	Surface Water	3	8,952	Yes
103	CITY OF GRAHAM Graham	Graham	Surface Water	3	8,732	Yes
104	KINGSBRIDGE MUD Houston	Houston	Surface Water	3	8,663	Yes
105	CITY OF HOUSTON Houston	Houston	Surface Water	2	2,970,543	Yes
106	CITY OF SAN MARCOS San Marcos	San Marcos	Surface Water	2	72,970	Yes
107	SHARYLAND WSC Mission	Mission	Surface Water	2	68,562	Yes
108	CITY OF HURST Hurst	Hurst	Surface Water	2	40,454	Yes
109	JBSA - SAM HOUSTON San Antonio	San Antonio	Groundwater	2	37,563	Yes
110	CITY OF SOUTHLAKE Southlake	Southlake	Surface Water	2	31,576	Yes
111	CITY OF HUTTO Hutto	Hutto	Surface Water	2	29,580	Yes
112	CITY OF MIDLOTHIAN Midlothian	Midlothian	Surface Water	2	27,699	Yes
113	EAST RIO HONDO WSC Rio Hondo	Rio Hondo	Surface Water	2	24,756	Yes
114	MONTGOMERY COUNTY MUD 47 The Woodlands	The Woodlands	Surface Water	2	24,171	Yes
115	MOUNTAIN PEAK SUD Midlothian	Midlothian	Surface Water	2	23,988	Yes
116	WINDERMERE COMMUNITY Austin	Austin	Surface Water	2	21,231	Yes
117	CITY OF CROWLEY Crowley	Crowley	Surface Water	2	19,935	Yes
118	COUNTY LINE SUD Uhland	Uhland	Surface Water	2	19,609	Yes
119	CITY OF MELISSA Melissa	Melissa	Surface Water	2	18,020	Yes
120	CITY OF GATESVILLE Gatesville	Gatesville	Surface Water	2	16,135	Yes
121	CITY OF LIVINGSTON Livingston	Livingston	Surface Water	2	15,199	Yes
122	CITY OF PORT NECHES Port Neches	Port Neches	Surface Water	2	14,994	Yes
123	KINGSLAND WSC Kingsland	Kingsland	Surface Water	2	12,975	Yes
124	BROOKESMITH SPECIAL UTILITY DISTRICT Brownwood	Brownwood	Surface Water	2	12,621	Yes
125	MONTGOMERY COUNTY MUD 7 The Woodlands	The Woodlands	Surface Water	2	12,528	Yes
126	TOWN OF FAIRVIEW Fairview	Fairview	Surface Water	2	11,100	Yes
127	JBSA - RANDOLPH San Antonio	San Antonio	Groundwater	2	10,949	Yes
128	CITY OF ROANOKE Roanoke	Roanoke	Surface Water	2	10,127	Yes
129	CITY OF WILLIS Willis	Willis	Groundwater	2	9,867	Yes
130	CITY OF WHITEHOUSE Whitehouse	Whitehouse	Surface Water	2	9,571	Yes
131	CITY OF LAMESA Lamesa	Lamesa	Surface Water	2	9,442	Yes
132	Kickapoo Traditional Tribe Eagle Pass	Eagle Pass	Surface Water	2	9,384	Yes
133	CITY OF PEARSALL Pearsall	Pearsall	Groundwater	2	8,985	Yes
134	CITY OF BROWNFIELD Brownfield	Brownfield	Surface Water	2	8,652	Yes
135	PERRYTON MUNICIPAL WATER SYSTEM Perryton	Perryton	Groundwater	2	8,492	Yes
136	TBCD WINNIE STOWELL Stowell	Stowell	Surface Water	2	8,397	Yes
137	TEXAS STATE UNIVERSITY - SAN MARCOS San Marcos	San Marcos	Groundwater	1	43,552	Yes
138	CITY OF WESLACO Weslaco	Weslaco	Surface Water	1	40,033	Yes
139	CITY OF DEER PARK Deer Park	Deer Park	Surface Water	1	34,495	Yes
140	CITY OF BALCH SPRINGS Balch Springs	Balch Springs	Surface Water	1	28,300	Yes
141	CITY OF COLLEYVILLE Colleyville	Colleyville	Surface Water	1	26,057	Yes
142	CITY OF TAYLOR Taylor	Taylor	Surface Water	1	20,622	Yes
143	CITY OF SEAGOVILLE Seagoville	Seagoville	Surface Water	1	20,156	Yes
144	GREENBELT MIWA Clarendon	Clarendon	Surface Water	1	19,341	Yes
145	CITY OF ORANGE Orange	Orange	Groundwater	1	19,300	Yes
146	CITY OF ROYSE CITY Royse City	Royse City	Surface Water	1	16,400	Yes
147	CITY OF MERCEDES Mercedes	Mercedes	Surface Water	1	16,258	Yes
148	FORT BEND COUNTY MUD 30 Houston	Houston	Surface Water	1	15,798	Yes
149	CITY OF KILGORE Kilgore	Kilgore	Surface Water	1	14,948	Yes
150	CITY OF HIDALGO WATER SYSTEM Hidalgo	Hidalgo	Groundwater	1	14,800	Yes
151	CITY OF HENDERSON Henderson	Henderson	Surface Water	1	14,666	Yes
152	CITY OF LEVELLAND Levelland	Levelland	Surface Water	1	12,652	Yes
153	CITY OF ROBINSON Robinson	Robinson	Surface Water	1	12,650	Yes
154	CITY OF HONDO Hondo	Hondo	Groundwater	1	11,044	Yes
155	CITY OF VERNON Vernon	Vernon	Groundwater	1	11,002	Yes
156	NORTH COLLIN SUD Melissa	Melissa	Surface Water	1	10,674	Yes
157	CITY OF INGLESIDE Ingleside	Ingleside	Surface Water	1	10,106	Yes
158	CITY OF SPLENDORA Splendora	Splendora	Groundwater	1	9,612	Yes
159	CITY OF WOODWAY Woodway	Woodway	Surface Water	1	9,383	Yes
160	CONCORD-ROBBINS WSC Marquez	Marquez	Groundwater	1	9,190	Yes
161	NAVAL AIR STN JOINT RESERVE BASE Fort Woth	Fort Woth	Surface Water	1	9,000	Yes
162	CITY OF WHARTON Wharton	Wharton	Groundwater	1	8,756	Yes
163	RICE UNIVERSITY Houston	Houston	Surface Water	1	8,415	Yes
164	CITY OF FLORESVILLE Floresville	Floresville	Groundwater	1	8,306	Yes

Systems with No Violations (336)

336 water systems in Texas have zero recorded violations. Showing the 50 largest by population served.

SAN ANTONIO WATER SYSTEM (2,113,151) DALLAS WATER UTILITY (1,356,479) EL PASO WATER UTILITIES PUBLIC SERVICE B (747,168) CITY OF ARLINGTON (405,420) CITY OF PLANO (292,059) LUBBOCK PUBLIC WATER SYSTEM (275,041) CITY OF IRVING (264,546) CITY OF GARLAND (248,822) CITY OF FRISCO (231,910) CITY OF MCKINNEY (224,043) CITY OF GRAND PRAIRIE (201,843) AMARILLO MUNICIPAL WATER SYSTEM (201,291) BROWNSVILLE PUBLIC UTILITIES BOARD (201,249) CITY OF GEORGETOWN (191,639) MCALLEN PUBLIC UTILITY (189,957) CITY OF MESQUITE (152,020) CITY OF PASADENA (152,000) CITY OF KILLEEN (151,261) CITY OF DENTON (150,037) CITY OF WACO (146,241) CITY OF LEWISVILLE (140,880) CITY OF CARROLLTON (136,170) CITY OF ROUND ROCK (130,662) CITY OF LEAGUE CITY (128,412) CITY OF PEARLAND (125,828) CITY OF RICHARDSON (122,615) NEW BRAUNFELS UTILITIES (116,477) CITY OF BEAUMONT WATER UTILITY DEPT (115,282) CITY OF CONROE (113,912) MUSTANG SUD (110,826) CITY OF ALLEN (104,870) CITY OF COLLEGE STATION (104,103) CITY OF WICHITA FALLS (102,316) CITY OF LEANDER (98,330) CITY OF SUGAR LAND (90,909) CLEAR LAKE CITY WATER AUTHORITY (89,702) CITY OF BRYAN (87,816) CITY OF CEDAR PARK (86,939) AQUA WSC (86,325) CITY OF BAYTOWN (86,004) HARLINGEN WATER WORKS SYSTEM (85,900) CITY OF LONGVIEW (83,236) CITY OF HOUSTON UD 5 - KINGWOOD (80,073) TOWN OF FLOWER MOUND (80,000) CITY OF PHARR (79,715) CITY OF MANSFIELD (77,142) CITY OF MISSION (77,058) CITY OF NORTH RICHLAND HILLS (71,600) SOUTHERN UTILITIES (69,735) CITY OF VICTORIA (66,932) +286 more

All Water Systems in Texas (4,587)

Page 19 of 92, ordered by population served.

System	Population Served	Violations
FORT BEND COUNTY MUD 152	4,575	0
HARRIS COUNTY MUD 130	4,572	0
SAND FLAT WSC	4,569	0
CHELFORD ONE MUD	4,557	0
CITY OF OVILLA	4,532	0
SUNBELT FWSD WOODLAND OAKS SUBDIVISION	4,527	0
HARRIS COUNTY MUD 344	4,518	0
CITY OF MINEOLA	4,515	0
HARRIS COUNTY MUD 284	4,506	0
CITY OF DILLEY	4,505	4
BETHANY SUD	4,503	0
TULIA MUNICIPAL WATER SYSTEM	4,501	0
CITY OF BULLARD	4,500	1
GBRA CALHOUN COUNTY RURAL WATER SYSTEM	4,482	21
FALFURRIAS UTILITY BOARD	4,473	37
NORTHWEST HARRIS COUNTY MUD 23	4,470	0
RENN ROAD MUD	4,464	3
HARRIS COUNTY MUD 365	4,461	0
HARRIS COUNTY MUD 69	4,458	0
HARRIS COUNTY MUD 370	4,452	0
HARRIS COUNTY MUD 104	4,449	0
CLAY ROAD MUD	4,443	0
CITY OF THREE RIVERS	4,428	0
MONTGOMERY COUNTY MUD 19	4,422	0
HARRIS COUNTY MUD 397	4,413	0
CITY OF JUSTIN	4,409	0
HARRIS COUNTY MUD 172	4,404	0
CITY OF JACKSBORO	4,397	5
FORT BEND COUNTY MUD 42 WAT PLAT	4,395	0
DIMMITT MUNICIPAL WATER SYSTEM	4,393	0
HILL COUNTY WSC	4,383	0
KINGS MANOR MUD	4,377	0
COPEVILLE SUD	4,375	0
CITY OF CALDWELL	4,358	0
CITY OF REDWATER	4,356	1
EAST TEXAS A&M UNIVERSITY	4,350	0
TANGLEWOOD ON TEXOMA	4,341	0
CITY OF PITTSBURG	4,335	0
CITY OF DEVINE	4,318	5
FORT BEND COUNTY MUD 165	4,314	0
SIENNA MUD 12	4,311	0
CYPRESSWOOD UTILITY DISTRICT	4,305	3
MULTI-COUNTY WSC	4,302	69
VIRGINIA HILL WSC	4,290	0
EAST BELL WSC	4,287	0
MONTGOMERY COUNTY MUD 39	4,284	0
CITY OF SUGAR LAND RIVER PARK	4,278	0
CITY OF KARNES CITY	4,269	3
SHADY HOLLOW MUD	4,269	0
HARRIS COUNTY MUD 322	4,266	0

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Frequently Asked Questions

How many water systems are in Texas?

Texas has 4,587 community water systems tracked by the EPA, serving a combined population of 32,293,308 people.

How many water systems in Texas have health violations?

1807 water systems in Texas have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 39% of all systems in the state.

What is the total number of water violations in Texas?

Texas water systems have accumulated 33,822 total violations across all 4,587 community water systems.

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

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

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