countyscore

Best Water Quality Counties in Texas

EPA drinking water health violations and safety grades Compare rankings across all 254 counties.

Average Water Quality Score
30/100
Top County
Baylor County
Counties Ranked
254

Top 10

#1
Baylor County
TX
86/100
#2
Crockett County
TX
86/100
#3
Dickens County
TX
86/100
#4
Franklin County
TX
86/100
#5
Glasscock County
TX
86/100
#6
Hemphill County
TX
86/100
#7
Kinney County
TX
86/100
#8
Lavaca County
TX
86/100
#9
Reagan County
TX
86/100
#10
Roberts County
TX
86/100

All Texas Counties Ranked

#CountyWater Quality ScoreOverall Score
1Baylor County, TX
86
57.7
2Crockett County, TX
86
71.3
3Dickens County, TX
86
60.3
4Franklin County, TX
86
44
5Glasscock County, TX
86
57.7
6Hemphill County, TX
86
53.4
7Kinney County, TX
86
64.9
8Lavaca County, TX
86
55.2
9Reagan County, TX
86
55.4
10Roberts County, TX
86
64.4
11Schleicher County, TX
86
55.4
12Sterling County, TX
86
51.8
13Titus County, TX
86
40.7
14Dallas County, TX
71.8
26.2
15Potter County, TX
71.1
21
16Collin County, TX
70.8
30.4
17Fort Bend County, TX
67.8
27.1
18Bexar County, TX
67.5
18.1
19Denton County, TX
66.8
26.2
20Rockwall County, TX
66.8
40.6
21Williamson County, TX
66.5
43.5
22Harris County, TX
65.8
24.9
23Tarrant County, TX
64.6
31.5
24Bell County, TX
64.5
25.6
25Ellis County, TX
64.2
30.8
26Hidalgo County, TX
64.2
29.2
27Brown County, TX
63.8
36.6
28Gonzales County, TX
63.8
36.8
29Hays County, TX
62.2
22.7
30Wilson County, TX
62
37.1
31Maverick County, TX
61.7
32.5
32Travis County, TX
61.7
37.9
33Bowie County, TX
61.5
34.5
34DeWitt County, TX
61.2
44.9
35El Paso County, TX
60.6
26.3
36Guadalupe County, TX
60.1
39.4
37Robertson County, TX
59.6
51.1
38Wichita County, TX
59.6
44.3
39Galveston County, TX
59.1
28.7
40Upshur County, TX
58.5
40.8
41Kaufman County, TX
57.5
29.4
42Atascosa County, TX
56.9
32.5
43Donley County, TX
56.8
55.4
44Ward County, TX
56.8
50.2
45Wood County, TX
56.8
50.8
46Zavala County, TX
56.6
43.8
47Fannin County, TX
56.1
46.2
48Johnson County, TX
56.1
32.7
49Gray County, TX
55.6
31.1
50Nueces County, TX
55.5
18.5
51Moore County, TX
55.2
34.5
52Archer County, TX
55
61.1
53Live Oak County, TX
53.4
57.8
54Deaf Smith County, TX
53.1
30.6
55Nacogdoches County, TX
52.5
38.9
56Brazos County, TX
52.2
22.8
57San Saba County, TX
51.2
54.1
58Hopkins County, TX
50.5
45.9
59Cameron County, TX
49.6
29.7
60Medina County, TX
49.4
36.8
61Morris County, TX
49.3
47.6
62Hardin County, TX
49
41.4
63Young County, TX
48.4
46.2
64Wharton County, TX
48.3
27
65Bailey County, TX
47.9
56.4
66Lamar County, TX
47.3
36.5
67Floyd County, TX
46.4
49.5
68Colorado County, TX
45.9
39.3
69Hansford County, TX
45.9
57.9
70Montgomery County, TX
45.7
29.3
71Lee County, TX
45.6
42.6
72Ochiltree County, TX
45.5
39.6
73Hunt County, TX
45.3
31.5
74Mitchell County, TX
45
57.9
75Jackson County, TX
44.8
44.4
76Taylor County, TX
44.4
41.9
77Bastrop County, TX
44
29.9
78Liberty County, TX
43.9
30.4
79Cooke County, TX
43.5
37.1
80Winkler County, TX
43.3
52.4
81Camp County, TX
43.2
44.5
82Freestone County, TX
43.2
39.4
83Anderson County, TX
41.5
41
84Gregg County, TX
40.6
28.2
85Crane County, TX
40.4
53.5
86Waller County, TX
40.1
33.6
87Leon County, TX
39.8
48.5
88Frio County, TX
39
36.3
89Van Zandt County, TX
38.9
41.4
90Swisher County, TX
38.7
35.2
91Hutchinson County, TX
38.4
41.1
92Sutton County, TX
38.4
55.9
93Parmer County, TX
38.1
42.8
94Stephens County, TX
37.9
37
95Hill County, TX
37.8
38.4
96Newton County, TX
37.8
47.7
97Austin County, TX
37.3
39.6
98La Salle County, TX
36.8
53.6
99Nolan County, TX
36.7
36.4
100Dimmit County, TX
36.5
51.4
101Goliad County, TX
36.2
51.4
102Sherman County, TX
36.1
52.1
103Hudspeth County, TX
35
56.9
104Montague County, TX
34.9
40.8
105Webb County, TX
34.9
27.9
106Culberson County, TX
34.7
57.6
107Carson County, TX
34.5
49.3
108Coleman County, TX
34.4
46.9
109Tom Green County, TX
32.3
23.6
110Ector County, TX
32
21.2
111Oldham County, TX
31.8
54.5
112Grayson County, TX
31.4
32.8
113Jeff Davis County, TX
31.3
63.3
114Jefferson County, TX
30.8
19.8
115Uvalde County, TX
30.5
25.6
116Menard County, TX
29.9
53.1
117Willacy County, TX
29.8
32.6
118Armstrong County, TX
29.7
37.1
119Karnes County, TX
28.4
41.7
120Hood County, TX
28.3
37.4
121Tyler County, TX
26.2
41.3
122Red River County, TX
26
49.7
123Madison County, TX
25.7
46.8
124Coryell County, TX
25.3
32.7
125Navarro County, TX
25.1
30.3
126Llano County, TX
24.7
47.2
127Smith County, TX
24.7
29.6
128Bandera County, TX
24.3
46.6
129Comal County, TX
23.6
33.9
130San Patricio County, TX
23.6
31.4
131Randall County, TX
23
44.5
132Val Verde County, TX
22.5
27
133Childress County, TX
22.3
42.6
134Irion County, TX
22.3
47.3
135Starr County, TX
22
45.9
136Jack County, TX
21.9
49.9
137Bosque County, TX
21.8
50.4
138Brazoria County, TX
21.2
28.8
139Scurry County, TX
21.2
35.5
140Walker County, TX
21
25.1
141Terrell County, TX
20.6
64
142Henderson County, TX
20.4
38.8
143Hale County, TX
19.5
36.6
144McLennan County, TX
19.2
22.6
145Caldwell County, TX
18.7
22.5
146Cochran County, TX
18.5
44.6
147Victoria County, TX
18.5
23.6
148Brooks County, TX
18.3
53.8
149Hartley County, TX
17.7
47.7
150Kleberg County, TX
17.7
19.2
151Lipscomb County, TX
17.6
51.2
152Aransas County, TX
17.3
26.9
153Crosby County, TX
17.2
52.9
154Lamb County, TX
16.8
45.8
155Cottle County, TX
16.6
61.5
156Parker County, TX
16.5
32.9
157Reeves County, TX
16.4
39.8
158Milam County, TX
16
41.8
159Rusk County, TX
15.5
41.9
160Delta County, TX
15.3
47.4
161Midland County, TX
15.2
38.7
162Erath County, TX
14.7
38.6
163Washington County, TX
14.7
37.9
164Wheeler County, TX
13.9
48.8
165Harrison County, TX
13.7
34.5
166Howard County, TX
13.6
25.1
167Lampasas County, TX
13.4
41.6
168Clay County, TX
13.3
39.4
169Brewster County, TX
13.1
55.4
170Wise County, TX
12.7
36.7
171Collingsworth County, TX
12.6
58.7
172Jim Wells County, TX
12.6
25.8
173Rains County, TX
11.9
48.2
174Mills County, TX
11.4
61.7
175Kendall County, TX
11.3
41.3
176Houston County, TX
11.2
39.4
177Angelina County, TX
11
27.6
178Bee County, TX
10.9
28.1
179Jones County, TX
10.7
30.1
180Burleson County, TX
10.6
49.2
181Blanco County, TX
10.2
49
182Cass County, TX
10.2
47.9
183McMullen County, TX
10.1
53.7
184Zapata County, TX
10.1
53.9
185Dallam County, TX
9.7
35
186Pecos County, TX
9.6
48.5
187Upton County, TX
9.3
55.8
188Jasper County, TX
9.2
40.5
189Fayette County, TX
9.1
47.3
190Chambers County, TX
9
32.1
191Gillespie County, TX
9
45.5
192Kenedy County, TX
8.7
33.7
193Palo Pinto County, TX
8.5
31.7
194Andrews County, TX
8.2
32.2
195Somervell County, TX
8.1
48.7
196Castro County, TX
8
52.4
197Kerr County, TX
7.8
40.1
198Lubbock County, TX
7.8
20.3
199Motley County, TX
7.6
50.4
200Orange County, TX
7.6
31.3
201San Jacinto County, TX
7.1
44.7
202Sabine County, TX
6.9
56
203Grimes County, TX
6.7
37
204Cherokee County, TX
6.6
33.9
205Eastland County, TX
6.5
45.9
206Limestone County, TX
6.5
32.7
207Calhoun County, TX
6.4
36.2
208Refugio County, TX
6.4
41.5
209Loving County, TX
6
40.4
210Marion County, TX
5.9
45.1
211Falls County, TX
5.8
46.4
212Hamilton County, TX
5.8
47.4
213Haskell County, TX
5.6
44.5
214Polk County, TX
5.6
32.8
215Shackelford County, TX
5.4
52.8
216Garza County, TX
5.3
46.6
217Matagorda County, TX
5.1
27.8
218Dawson County, TX
4.9
32.6
219Jim Hogg County, TX
4.8
38.4
220Panola County, TX
4.8
40.1
221Wilbarger County, TX
4.7
35.2
222Kimble County, TX
4.6
57.6
223Shelby County, TX
4.6
40.1
224Presidio County, TX
4.5
55.1
225Fisher County, TX
4.4
42.3
226Terry County, TX
4.4
30.4
227Trinity County, TX
4
46.1
228Hardeman County, TX
3.8
57.2
229Runnels County, TX
3.4
42.3
230Callahan County, TX
3.2
51.2
231Comanche County, TX
3.2
38.8
232Yoakum County, TX
2.9
49.5
233Hockley County, TX
2.7
32.2
234Gaines County, TX
2.6
49.3
235Martin County, TX
2.6
37.8
236Knox County, TX
2.5
49.1
237Burnet County, TX
2.4
37.5
238Duval County, TX
2.4
43.3
239Mason County, TX
2.1
64.5
240Coke County, TX
1.9
48.8
241Real County, TX
1.8
33.6
242Throckmorton County, TX
1.6
57.4
243Kent County, TX
1.4
61.4
244Stonewall County, TX
1.3
57.6
245Hall County, TX
0.8
57.5
246Concho County, TX
0.7
47.8
247King County, TX
0.5
65.5
248Lynn County, TX
0.4
37.2
249San Augustine County, TX
0.2
49.1
250Briscoe County, TX
0.1
47.7
251Edwards County, TX
0.1
40
252McCulloch County, TX
0.1
40.1
253Borden County, TX
0
67
254Foard County, TX
0
55.3

Data Source

Water Quality data from WaterByCounty. See full details at WaterByCounty. Data updated February 2026.