PlainEnviro

Texas Water Systems

4,620 community water systems in Texas, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).

Water Systems
4,620
Health-Based Violation Records
35,693
Health Violations
1,807 systems
Population Served
33,092,796

Texas 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? (162)

# System Name Violations Health
1 CITY OF WOLFFORTH Wolfforth 190 Yes
2 CITY OF ANDREWS Andrews 149 Yes
3 ORANGE COUNTY WCID 1 Vidor 145 Yes
4 CRYSTAL CLEAR SUD San Marcos 93 Yes
5 MAXWELL SUD Maxwell 91 Yes
6 WEBB COUNTY WATER UTILITIES Laredo 82 Yes
7 CITY OF PORT LAVACA Port Lavaca 80 Yes
8 HUDSON WSC Lufkin 68 Yes
9 WALNUT CREEK SUD Springtown 67 Yes
10 MILITARY HWY WSC LAS RUSIAS Progreso 67 Yes
11 CITY OF BEEVILLE Beeville 57 Yes
12 CITY OF KERRVILLE Kerrville 55 Yes
13 CITY OF BASTROP Bastrop 50 Yes
14 ATASCOSA RURAL WSC Atascosa 47 Yes
15 CITY OF BIG SPRING Big Spring 45 Yes
16 KEMPNER WSC Kempner 45 Yes
17 CITY OF TEMPLE Temple 44 Yes
18 CITY OF TYLER Tyler 35 Yes
19 CITY OF COMMERCE Commerce 34 Yes
20 CITY OF PFLUGERVILLE Pflugerville 32 Yes
21 SPRINGS HILL SUD Seguin 26 Yes
22 CITY OF LA GRULLA La Grulla 26 Yes
23 TRAIL OF THE LAKES MUD Houston 26 Yes
24 NUECES COUNTY WCID 3 Robstown 24 Yes
25 CITY OF JACKSONVILLE Jacksonville 22 Yes
26 CITY OF BAY CITY Bay City 20 Yes
27 CITY OF HORSESHOE BAY Horseshoe Bay 19 Yes
28 CITY OF NEDERLAND Nederland 18 Yes
29 CITY OF ROMA Roma 16 Yes
30 G M WSC Hemphill 15 Yes
31 CITY OF MIDLAND WATER PURIFICATION PLANT Midland 14 Yes
32 EAST CEDAR CREEK FWSD BROOKSHIRE Mabank 14 Yes
33 CITY OF HITCHCOCK Hitchcock 14 Yes
34 NUECES COUNTY WCID 4 Port Aransas 13 Yes
35 CITY OF NACOGDOCHES Nacogdoches 12 Yes
36 CITY OF MONT BELVIEU Mont Belvieu 12 Yes
37 CITY OF BURKBURNETT Burkburnett 12 Yes
38 CITY OF AUSTIN WATER & WASTEWATER Austin 11 Yes
39 AGUA SUD Mission 11 Yes
40 CITY OF CORPUS CHRISTI Corpus Christi 10 Yes
41 CITY OF SEGUIN Seguin 10 Yes
42 CITY OF PALESTINE Palestine 10 Yes
43 WELLBORN SUD Wellborn 10 Yes
44 CITY OF GAINESVILLE Gainesville 10 Yes
45 CITY OF ATHENS Athens 10 Yes
46 ELDERVILLE WSC Longview 10 Yes
47 CITY OF SAN ANGELO San Angelo 9 Yes
48 CITY OF BOERNE Boerne 9 Yes
49 CITY OF MARSHALL Marshall 9 Yes
50 CITY OF WHITE SETTLEMENT White Settlement 9 Yes
51 CITY OF LAREDO Laredo 8 Yes
52 NORTH ALAMO WSC Edinburg 8 Yes
53 MANVILLE WSC Coupland 8 Yes
54 GOFORTH SUD Niederwald 8 Yes
55 JONAH WATER SUD Hutto 8 Yes
56 LAMAR COUNTY WATER SUPPLY DISTRICT Paris 8 Yes
57 CITY OF RIO GRANDE CITY Rio Grande 8 Yes
58 CYPRESS SPRINGS SUD N PLANT 1 AND NE PLA Mount Vernon 8 Yes
59 HARRIS COUNTY MUD 157 Houston 8 Yes
60 WEST JEFFERSON COUNTY MWD Beaumont 8 Yes
61 CITY OF LIBERTY HILL Liberty Hill 8 Yes
62 CLWSC CANYON LAKE SHORES Canyon Lake 7 Yes
63 WEST TRAVIS COUNTY PUBLIC UTILITY AGENCY Austin 7 Yes
64 CITY OF GROVES Groves 7 Yes
65 CITY OF LAGO VISTA Lago Vista 7 Yes
66 SJWTX TRIPLE PEAK PLANT Canyon Lake 6 Yes
67 ACTON MUD Granbury 6 Yes
68 CITY OF BRENHAM Brenham 6 Yes
69 CITY OF MINERAL WELLS Mineral Wells 6 Yes
70 MONTGOMERY COUNTY MUD 60 The Woodlands 6 Yes
71 CITY OF BRIDGE CITY City Of Bridge City 6 Yes
72 WALNUT GROVE WSC Whitehouse 6 Yes
73 CITY OF PORT ARTHUR Port Arthur 5 Yes
74 CITY OF PARIS Paris 5 Yes
75 CITY OF PORTLAND Portland 5 Yes
76 HEREFORD MUNICIPAL WATER SYSTEM Hereford 5 Yes
77 CITY OF GRANBURY Granbury 5 Yes
78 CITY OF KYLE Kyle 4 Yes
79 CITY OF FORNEY Forney 4 Yes
80 PORTER SPECIAL UTILITY DISTRICT Porter 4 Yes
81 SONTERRA MUD Austin 4 Yes
82 CITY OF MABANK Mabank 4 Yes
83 ZAPATA COUNTY WATERWORKS SWTP Zapata 4 Yes
84 BROOKESMITH SPECIAL UTILITY DISTRICT Brownwood 4 Yes
85 BI COUNTY WSC 1 Pittsburg 4 Yes
86 MEMORIAL VILLAGES WATER AUTHORITY Houston 4 Yes
87 CITY OF BELLMEAD Bellmead 4 Yes
88 MISSION BEND MUD 2 Houston 4 Yes
89 CITY OF FORT WORTH Fort Worth 3 Yes
90 CITY OF ABILENE Abilene 3 Yes
91 CITY OF ODESSA Odessa 3 Yes
92 CITY OF EDINBURG Edinburg 3 Yes
93 CITY OF SAN MARCOS San Marcos 3 Yes
94 CITY OF TEXAS CITY Texas City 3 Yes
95 CITY OF SAN BENITO San Benito 3 Yes
96 CITY OF ANNA Anna 3 Yes
97 CITY OF SULPHUR SPRINGS Sulphur Springs 3 Yes
98 HARRIS COUNTY MUD 24 Houston 3 Yes
99 CITY OF DUMAS Dumas 3 Yes
100 CITY OF WILLIS Willis 3 Yes
101 HARRIS COUNTY WCID 21 Channelview 3 Yes
102 CITY OF ROCKPORT Rockport 3 Yes
103 CITY OF GALENA PARK Galena Park 3 Yes
104 OLMITO WSC Olmito 3 Yes
105 CITY OF GRAHAM Graham 3 Yes
106 KINGSBRIDGE MUD Houston 3 Yes
107 CITY OF HOUSTON Houston 2 Yes
108 SHARYLAND WSC Mission 2 Yes
109 CITY OF HURST Hurst 2 Yes
110 JBSA SAM HOUSTON San Antonio 2 Yes
111 CITY OF SOUTHLAKE Southlake 2 Yes
112 CITY OF HUTTO Hutto 2 Yes
113 CITY OF MIDLOTHIAN Midlothian 2 Yes
114 CITY OF COLLEYVILLE Colleyville 2 Yes
115 CITY OF MELISSA Melissa 2 Yes
116 EAST RIO HONDO WSC Rio Hondo 2 Yes
117 MONTGOMERY COUNTY MUD 47 The Woodlands 2 Yes
118 MOUNTAIN PEAK SUD Midlothian 2 Yes
119 WINDERMERE COMMUNITY Austin 2 Yes
120 CITY OF SEAGOVILLE Seagoville 2 Yes
121 CITY OF CROWLEY Crowley 2 Yes
122 COUNTY LINE SUD Uhland 2 Yes
123 CITY OF PORT NECHES Port Neches 2 Yes
124 CITY OF GATESVILLE Gatesville 2 Yes
125 CITY OF LIVINGSTON Livingston 2 Yes
126 KINGSLAND WSC Kingsland 2 Yes
127 MONTGOMERY COUNTY MUD 7 The Woodlands 2 Yes
128 CITY OF ROBINSON Robinson 2 Yes
129 TOWN OF FAIRVIEW Fairview 2 Yes
130 CITY OF HONDO Hondo 2 Yes
131 JBSA RANDOLPH San Antonio 2 Yes
132 CITY OF ROANOKE Roanoke 2 Yes
133 CITY OF WHITEHOUSE Whitehouse 2 Yes
134 CITY OF LAMESA Lamesa 2 Yes
135 Kickapoo Traditional Tribe Eagle Pass 2 Yes
136 CITY OF PEARSALL Pearsall 2 Yes
137 CITY OF BROWNFIELD Brownfield 2 Yes
138 PERRYTON MUNICIPAL WATER SYSTEM Perryton 2 Yes
139 RICE UNIVERSITY Houston 2 Yes
140 TBCD WINNIE STOWELL Stowell 2 Yes
141 TEXAS STATE UNIVERSITY - SAN MARCOS San Marcos 1 Yes
142 CITY OF WESLACO Weslaco 1 Yes
143 CITY OF DEER PARK Deer Park 1 Yes
144 CITY OF BALCH SPRINGS Balch Springs 1 Yes
145 CITY OF ROYSE CITY Royse City 1 Yes
146 CITY OF TAYLOR Taylor 1 Yes
147 CITY OF ORANGE Orange 1 Yes
148 FORT BEND COUNTY MUD 30 Houston 1 Yes
149 CITY OF MERCEDES Mercedes 1 Yes
150 CITY OF KILGORE Kilgore 1 Yes
151 CITY OF HIDALGO WATER SYSTEM Hidalgo 1 Yes
152 CITY OF HENDERSON Henderson 1 Yes
153 CITY OF LEVELLAND Levelland 1 Yes
154 CITY OF VERNON Vernon 1 Yes
155 NORTH COLLIN SUD Melissa 1 Yes
156 CITY OF INGLESIDE Ingleside 1 Yes
157 CONCORD ROBBINS WSC Marquez 1 Yes
158 CITY OF SPLENDORA Splendora 1 Yes
159 CITY OF WOODWAY Woodway 1 Yes
160 NAVAL AIR STN JOINT RESERVE BASE Fort Woth 1 Yes
161 CITY OF WHARTON Wharton 1 Yes
162 CITY OF FLORESVILLE Floresville 1 Yes

Systems with No Violations (338)

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

SAN ANTONIO WATER SYSTEM (2,643,729) DALLAS WATER UTILITY (1,356,479) EL PASO WATER UTILITIES (747,168) CITY OF ARLINGTON (413,955) 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 KILLEEN (161,027) CITY OF MESQUITE (152,020) CITY OF PASADENA (152,000) CITY OF DENTON (150,037) CITY OF LEAGUE CITY (149,557) CITY OF WACO (146,241) CITY OF LEWISVILLE (140,880) CITY OF CARROLLTON (136,170) CITY OF ROUND ROCK (130,662) 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) CITY OF ALLEN (113,746) MUSTANG SUD (110,826) CITY OF COLLEGE STATION (104,103) CITY OF WICHITA FALLS (102,316) CITY OF LEANDER (98,330) CITY OF BRYAN (91,031) CITY OF SUGAR LAND (90,909) CLEAR LAKE CITY WATER AUTHORITY (89,702) CITY OF MANSFIELD (89,227) 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 MISSION (77,058) CITY OF NORTH RICHLAND HILLS (74,859) SOUTHERN UTILITIES (69,735) CITY OF ROWLETT (68,123) +288 more

All Water Systems in Texas (4,620)

Page 1 of 93, ordered by population served.

System Population Served Violations
CITY OF HOUSTON 2,970,543 2
SAN ANTONIO WATER SYSTEM 2,643,729 0
DALLAS WATER UTILITY 1,356,479 0
CITY OF AUSTIN WATER & WASTEWATER 1,115,323 11
CITY OF FORT WORTH 955,900 3
EL PASO WATER UTILITIES 747,168 0
CITY OF ARLINGTON 413,955 0
CITY OF CORPUS CHRISTI 318,387 10
CITY OF PLANO 292,059 0
LUBBOCK PUBLIC WATER SYSTEM 275,041 0
CITY OF IRVING 264,546 0
CITY OF LAREDO 260,046 8
CITY OF GARLAND 248,822 0
CITY OF FRISCO 231,910 0
CITY OF MCKINNEY 224,043 0
CITY OF GRAND PRAIRIE 201,843 0
AMARILLO MUNICIPAL WATER SYSTEM 201,291 0
BROWNSVILLE PUBLIC UTILITIES BOARD 201,249 0
CITY OF GEORGETOWN 191,639 0
MCALLEN PUBLIC UTILITY 189,957 0
NORTH ALAMO WSC 171,195 8
CITY OF KILLEEN 161,027 0
CITY OF MIDLAND WATER PURIFICATION PLANT 157,000 14
CITY OF MESQUITE 152,020 0
CITY OF PASADENA 152,000 0
CITY OF DENTON 150,037 0
CITY OF LEAGUE CITY 149,557 0
CITY OF WACO 146,241 0
CITY OF LEWISVILLE 140,880 0
CITY OF CARROLLTON 136,170 0
CITY OF ROUND ROCK 130,662 0
CITY OF ABILENE 130,501 3
CITY OF PEARLAND 125,828 0
CITY OF ODESSA 123,334 3
CITY OF RICHARDSON 122,615 0
NEW BRAUNFELS UTILITIES 116,477 0
CITY OF BEAUMONT WATER UTILITY DEPT 115,282 0
CITY OF CONROE 113,912 0
CITY OF ALLEN 113,746 0
MUSTANG SUD 110,826 0
CITY OF TYLER 107,000 35
CITY OF SAN ANGELO 105,229 9
CITY OF COLLEGE STATION 104,103 0
CITY OF WICHITA FALLS 102,316 0
CITY OF LEANDER 98,330 0
CITY OF TEMPLE 94,935 44
CITY OF BRYAN 91,031 0
CITY OF SUGAR LAND 90,909 0
CLEAR LAKE CITY WATER AUTHORITY 89,702 0
CITY OF MANSFIELD 89,227 0
Page 1 of 93 Next →

Frequently Asked Questions

How many water systems are in Texas?
Texas has 4,620 community water systems tracked by the EPA, serving a combined population of 33,092,796 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.
How many health-based violation records are in this extract for Texas?
PlainEnviro's health-based EPA SDWIS extract contains 35,693 records joined to 4,620 active community water systems in Texas. 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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