Lithium Contamination

Lithium in Texas Drinking Water

Ranked by max lithium detected (µg/L) · UCMR 5 data (2023–2025) · Data from EPA SDWIS & UCMR

413

Cities Tested

413

Detected

100%

% Detected

49.1 µg/L

State Avg

▼ 0% vs national

vs National

900

Health Violations

Analysis

Lithium in Texas: what the data shows

Texas has 413 cities with lithium data from the EPA's UCMR 5 program (2023–2025). Lithium was detected in 413 of those cities. There is currently no federal MCL or health advisory for lithium — the state average max detected level is 49.1 µg/L. Nationally, lithium is detected in roughly 28% of sampled water systems. Lithium occurs naturally in groundwater, particularly in arid western states, and is concentrated in some surface waters near industrial discharge or geothermal sources. UCMR 5 added lithium monitoring in 2023, providing the first systematic national snapshot of public-water lithium levels. At therapeutic doses (administered as a medication), lithium is used to treat bipolar disorder. Chronic low-dose exposure from drinking water has been associated in some studies with effects on thyroid function and possibly mood. The most protective state guidance value is around 60 µg/L. Reverse osmosis and ion exchange are effective removal methods.

Comparison

Cities exceeding No federal MCL or HA

Texas

100%

413 of 413 cities

← = Exactly at national rate

National avg

100%

2808 of 2808 cities

City Map

Lithium data across Texas

Each dot is a city with UCMR 5 lithium testing data. Detected cities are shown — there is no federal limit, though some states use 60 µg/L as a screening level. Size reflects population served.

Worst Offenders

Top 10 cities by lithium level in Texas

Highest Lithium levels (µg/L)

All Cities

All Texas cities ranked by lithium level

#	City	Level	Detected?	Violations	Grade
1	Woodway	403.0 µg/L	Detected	5	B+
2	Marlin	325.0 µg/L	Detected	288	D
3	Onalaska	230.0 µg/L	Detected	1	B
4	Bartlett	208.0 µg/L	Detected	8	C-
5	Willis	199.0 µg/L	Detected	12	F
6	Millersview	184.0 µg/L	Detected	247	F
7	Dimmitt	183.0 µg/L	Detected	0	A
8	Midlothian	179.5 µg/L	Detected	12	B
9	Anthony	170.0 µg/L	Detected	19	D
10	Waxahachie	165.0 µg/L	Detected	70	D+
11	Perryton	165.0 µg/L	Detected	6	B+
12	Tulia	165.0 µg/L	Detected	5	B-
13	Bellmead	163.0 µg/L	Detected	3	B-
14	Houston	162.0 µg/L	Detected	929	F
15	Eddy	162.0 µg/L	Detected	3	A-
16	Andrews	161.8 µg/L	Detected	157	D
17	Tornillo	156.0 µg/L	Detected	46	B+
18	Temple	150.0 µg/L	Detected	31	C-
19	Montgomery	150.0 µg/L	Detected	35	D
20	Elmendorf	146.0 µg/L	Detected	5	F
21	George West	146.0 µg/L	Detected	6	F
22	Canyon	144.0 µg/L	Detected	5	F
23	Bellville	139.0 µg/L	Detected	14	D
24	Conroe	138.0 µg/L	Detected	54	F
25	Cameron	133.0 µg/L	Detected	107	F
26	Wolfforth	132.0 µg/L	Detected	551	D
27	Seminole	132.0 µg/L	Detected	123	D+
28	Sinton	129.0 µg/L	Detected	7	C-
29	Levelland	124.4 µg/L	Detected	168	F
30	Riesel	123.0 µg/L	Detected	172	D
31	Plainview	120.3 µg/L	Detected	25	F
32	El Paso	115.8 µg/L	Detected	192	F
33	Hereford	114.7 µg/L	Detected	13	F
34	Kennedale	114.0 µg/L	Detected	0	B+
35	Cuero	109.0 µg/L	Detected	2	A+
36	Yoakum	108.0 µg/L	Detected	2	B+
37	Austin	107.0 µg/L	Detected	1288	F
38	Pleasanton	105.7 µg/L	Detected	7	B+
39	La Grange	105.0 µg/L	Detected	53	D
40	Robinson	105.0 µg/L	Detected	2	A-
41	Hempstead	103.0 µg/L	Detected	18	B-
42	Richland Hills	100.0 µg/L	Detected	2	A-
43	China Spring	100.0 µg/L	Detected	2	C+
44	Friona	100.0 µg/L	Detected	10	B
45	Kingsville	97.2 µg/L	Detected	45	D+
46	Denver City	94.5 µg/L	Detected	11	B+
47	Kenedy	94.0 µg/L	Detected	14	C+
48	Progreso	92.9 µg/L	Detected	52	D+
49	Hebbronville	90.9 µg/L	Detected	104	D
50	Keene	90.3 µg/L	Detected	22	F
51	Littlefield	89.2 µg/L	Detected	5	C-
52	Lamesa	88.7 µg/L	Detected	151	F
53	Clifton	88.0 µg/L	Detected	19	D
54	Waco	86.2 µg/L	Detected	53	F
55	Everman	86.0 µg/L	Detected	0	B+
56	Bedford	85.6 µg/L	Detected	0	B+
57	Spearman	85.6 µg/L	Detected	1	A-
58	Giddings	85.2 µg/L	Detected	7	F
59	Coupland	83.8 µg/L	Detected	6	C
60	Bastrop	83.0 µg/L	Detected	31	F
61	Ballinger	83.0 µg/L	Detected	61	D
62	Horizon City	81.5 µg/L	Detected	1	A
63	Itasca	81.1 µg/L	Detected	67	F
64	Bishop	81.0 µg/L	Detected	10	A-
65	Borger	80.7 µg/L	Detected	1	C-
66	Dripping Springs	80.4 µg/L	Detected	45	F
67	Navasota	79.9 µg/L	Detected	6	F
68	Post	79.0 µg/L	Detected	28	F
69	Jasper	78.3 µg/L	Detected	77	F
70	Verhalen	78.3 µg/L	Detected	0	A-
71	Pecos	77.5 µg/L	Detected	1	B+
72	Olmito	77.0 µg/L	Detected	21	B+
73	The Colony	76.6 µg/L	Detected	2	A-
74	Karnes City	76.5 µg/L	Detected	23	C-
75	Hidalgo	76.0 µg/L	Detected	1	B-
76	San Diego	75.9 µg/L	Detected	6	D+
77	Clint	75.7 µg/L	Detected	2	B
78	Whitney	75.6 µg/L	Detected	11	D+
79	Prairie View	75.3 µg/L	Detected	4	B
80	Hewitt	72.6 µg/L	Detected	4	A-
81	Granbury	72.3 µg/L	Detected	28	F
82	Fabens	72.0 µg/L	Detected	0	A-
83	Alvarado	71.4 µg/L	Detected	5	D+
84	Krum	71.3 µg/L	Detected	0	B+
85	Cactus	71.0 µg/L	Detected	0	B+
86	Thornton	71.0 µg/L	Detected	1	A-
87	New Waverly	70.0 µg/L	Detected	44	F
88	Dumas	69.0 µg/L	Detected	6	C+
89	Goodfellow Afb	69.0 µg/L	Detected	6	C+
90	Midland	68.8 µg/L	Detected	231	F
91	Euless	68.7 µg/L	Detected	1	A-
92	Burleson	68.6 µg/L	Detected	9	B+
93	Aledo	67.0 µg/L	Detected	24	C
94	Joshua	65.6 µg/L	Detected	2	C-
95	Buda	65.5 µg/L	Detected	6	C+
96	Springtown	65.4 µg/L	Detected	71	D
97	Fort Stockton	65.1 µg/L	Detected	54	D
98	Fort Worth	64.7 µg/L	Detected	25	F
99	Bronte	64.5 µg/L	Detected	0	A-
100	Mission	64.4 µg/L	Detected	23	C-
101	Stockdale	64.3 µg/L	Detected	1	B+
102	San Angelo	64.1 µg/L	Detected	40	F
103	Livingston	63.9 µg/L	Detected	398	F
104	Sebastian	62.3 µg/L	Detected	4	B-
105	Harlingen	62.1 µg/L	Detected	1	C
106	Gatesville	61.9 µg/L	Detected	85	F
107	Mercedes	61.4 µg/L	Detected	22	F
108	Pilot Point	61.1 µg/L	Detected	5	C+
109	Falfurrias	61.0 µg/L	Detected	21	F
110	Commerce	60.6 µg/L	Detected	32	D
111	Brownfield	60.6 µg/L	Detected	1	B-
112	Poteet	60.6 µg/L	Detected	1	B
113	Riverside	60.3 µg/L	Detected	61	F
114	Huntsville	60.2 µg/L	Detected	128	F
115	Coldspring	59.5 µg/L	Detected	1	B
116	Willow Park	59.5 µg/L	Detected	3	B+
117	Bryan	58.6 µg/L	Detected	11	D
118	Floresville	58.6 µg/L	Detected	1	C
119	Colorado City	57.5 µg/L	Detected	2	B
120	Sanger	56.6 µg/L	Detected	8	D
121	Rio Hondo	56.5 µg/L	Detected	70	F
122	Big Spring	55.4 µg/L	Detected	48	F
123	Benbrook	55.4 µg/L	Detected	0	B
124	Slaton	55.3 µg/L	Detected	2	A-
125	Dalhart	55.0 µg/L	Detected	0	B+
126	Lockhart	54.7 µg/L	Detected	0	A-
127	Taft	54.1 µg/L	Detected	7	C-
128	Aransas Pass	53.8 µg/L	Detected	2	B
129	Lufkin	53.3 µg/L	Detected	167	F
130	Pharr	52.9 µg/L	Detected	0	A-
131	Pampa	52.8 µg/L	Detected	7	B
132	Elsa	52.8 µg/L	Detected	5	B-
133	Cypress	52.5 µg/L	Detected	624	F
134	Spring	52.3 µg/L	Detected	36	F
135	La Feria	51.9 µg/L	Detected	21	B-
136	Mcallen	51.8 µg/L	Detected	0	A
137	Brownsville	51.1 µg/L	Detected	5	C+
138	Childress	50.9 µg/L	Detected	13	D
139	Gonzales	50.7 µg/L	Detected	12	B
140	Los Fresnos	50.5 µg/L	Detected	29	D
141	Coahoma	50.4 µg/L	Detected	57	D+
142	Edinburg	50.0 µg/L	Detected	12	C-
143	The Woodlands	49.9 µg/L	Detected	19	F
144	San Juan	49.8 µg/L	Detected	4	B+
145	Lavernia	49.4 µg/L	Detected	0	A-
146	San Benito	49.3 µg/L	Detected	16	B+
147	Roma	49.3 µg/L	Detected	40	F
148	White Settlement	49.2 µg/L	Detected	13	C+
149	Annetta	49.0 µg/L	Detected	2	B
150	Diboll	48.9 µg/L	Detected	9	B-
151	Wichita Falls	48.5 µg/L	Detected	823	F
152	Alamo	48.3 µg/L	Detected	7	B+
153	Raymondville	48.2 µg/L	Detected	38	F
154	Abilene	48.1 µg/L	Detected	46	F
155	Odessa	48.0 µg/L	Detected	225	F
156	Beeville	47.8 µg/L	Detected	46	F
157	Dallas	47.0 µg/L	Detected	102	F
158	Argyle	46.9 µg/L	Detected	0	B-
159	Lubbock	46.5 µg/L	Detected	1231	F
160	Devine	45.9 µg/L	Detected	86	D+
161	Wellborn	45.7 µg/L	Detected	11	A-
162	Tuscola	45.7 µg/L	Detected	13	B
163	Celeste	45.7 µg/L	Detected	4	B
164	Donna	45.6 µg/L	Detected	6	B
165	Rio Grande	45.4 µg/L	Detected	6	B
166	Highland Village	45.2 µg/L	Detected	3	A-
167	Surfside Beach	44.8 µg/L	Detected	101	F
168	Amarillo	44.1 µg/L	Detected	26	F
169	Richwood	44.0 µg/L	Detected	0	B-
170	Moody	44.0 µg/L	Detected	6	C-
171	Port Isabel	43.7 µg/L	Detected	24	B+
172	Rio Grande City	43.7 µg/L	Detected	3	C+
173	Garciasville	43.4 µg/L	Detected	9	B
174	Clarksville	43.1 µg/L	Detected	37	D+
175	Monahans	43.0 µg/L	Detected	2	B+
176	Smithville	43.0 µg/L	Detected	2	B+
177	Cotulla	42.9 µg/L	Detected	6	D
178	Edna	42.8 µg/L	Detected	1	B+
179	Sweeny	42.3 µg/L	Detected	3	C+
180	Falcon Heights	41.6 µg/L	Detected	6	D+
181	Dilley	41.4 µg/L	Detected	2	C+
182	Aubrey	41.2 µg/L	Detected	3	F
183	Marion	41.0 µg/L	Detected	2	B-
184	Forest Hill	41.0 µg/L	Detected	7	A-
185	Laredo	40.7 µg/L	Detected	111	F
186	Plantersville	40.5 µg/L	Detected	13	D+
187	Adkins	40.1 µg/L	Detected	2	A-
188	La Grulla	40.0 µg/L	Detected	15	D
189	Sugar Land	39.8 µg/L	Detected	4	F
190	Purdon	39.5 µg/L	Detected	1	A-
191	Hutto	38.6 µg/L	Detected	17	B
192	Whitesboro	38.5 µg/L	Detected	0	B
193	Muleshoe	38.5 µg/L	Detected	2	A-
194	Portland	38.3 µg/L	Detected	2	B+
195	Shelbyville	38.2 µg/L	Detected	151	D
196	Waller	38.0 µg/L	Detected	52	F
197	Savoy	38.0 µg/L	Detected	1	B+
198	Calvert	37.8 µg/L	Detected	3	B
199	Eagle Pass	37.0 µg/L	Detected	45	D+
200	Cibolo	37.0 µg/L	Detected	7	B+
201	Richland Springs	36.8 µg/L	Detected	5	C
202	Elgin	36.5 µg/L	Detected	1	A-
203	Seguin	36.3 µg/L	Detected	42	F
204	Weslaco	36.1 µg/L	Detected	2	C+
205	Hudson Oaks	36.1 µg/L	Detected	13	F
206	Katy	36.0 µg/L	Detected	46	F
207	Van Alstyne	35.6 µg/L	Detected	0	C-
208	Robstown	34.7 µg/L	Detected	31	F
209	West Columbia	34.4 µg/L	Detected	2	C+
210	Columbus	34.4 µg/L	Detected	52	F
211	Haskell	34.3 µg/L	Detected	84	F
212	Cleveland	33.9 µg/L	Detected	4	C-
213	Jarrell	33.5 µg/L	Detected	1	A-
214	Kerrville	33.4 µg/L	Detected	131	F
215	Cut And Shoot	33.3 µg/L	Detected	1	A
216	Spurger	33.2 µg/L	Detected	1	B-
217	Lake Jackson	33.1 µg/L	Detected	6	D
218	Converse	32.7 µg/L	Detected	1	A
219	Buffalo	32.5 µg/L	Detected	5	D
220	Three Rivers	32.5 µg/L	Detected	19	B+
221	Sherman	32.0 µg/L	Detected	2	B+
222	Anna	31.9 µg/L	Detected	3	C
223	Alice	31.9 µg/L	Detected	103	F
224	Orangefield	31.8 µg/L	Detected	3	B-
225	Alvin	31.6 µg/L	Detected	37	F
226	Sweetwater	31.6 µg/L	Detected	8	B
227	Jersey Village	31.5 µg/L	Detected	6	B+
228	Cumby	31.2 µg/L	Detected	22	D
229	Bridge City	31.0 µg/L	Detected	7	C
230	Wharton	31.0 µg/L	Detected	1	D
231	Zapata	30.9 µg/L	Detected	75	D
232	Linden	30.9 µg/L	Detected	7	F
233	Kermit	29.9 µg/L	Detected	2	C
234	Presidio	29.8 µg/L	Detected	8	B
235	Lake Worth	29.4 µg/L	Detected	1	C+
236	Richmond	29.2 µg/L	Detected	3	F
237	Montalba	29.0 µg/L	Detected	3	C+
238	Honey Grove	29.0 µg/L	Detected	11	B
239	Garrison	28.5 µg/L	Detected	4	C
240	Canyon Lake	28.4 µg/L	Detected	39	F
241	Gainesville	28.3 µg/L	Detected	13	D
242	Liberty	28.2 µg/L	Detected	5	A-
243	Denton	28.0 µg/L	Detected	3	F
244	Brady	27.8 µg/L	Detected	746	D
245	Ingleside	27.4 µg/L	Detected	3	D+
246	Tomball	27.1 µg/L	Detected	25	C
247	Hardin	27.0 µg/L	Detected	10	A
248	Saint Jo	27.0 µg/L	Detected	1	B-
249	Clute	26.9 µg/L	Detected	1	B
250	Caldwell	26.8 µg/L	Detected	7	C-
251	Mont Belvieu	26.7 µg/L	Detected	19	F
252	Henderson	26.4 µg/L	Detected	57	F
253	Friendswood	26.3 µg/L	Detected	0	B+
254	Melissa	26.3 µg/L	Detected	4	B
255	Corpus Christi	26.2 µg/L	Detected	13	B
256	San Antonio	26.0 µg/L	Detected	25	F
257	Port Aransas	26.0 µg/L	Detected	6	B+
258	Alpine	26.0 µg/L	Detected	5	D
259	Charlotte	25.9 µg/L	Detected	0	B+
260	Bellaire	25.6 µg/L	Detected	1	A-
261	Crockett	25.4 µg/L	Detected	47	F
262	Stafford	25.3 µg/L	Detected	1	A-
263	Orange	25.3 µg/L	Detected	10	C-
264	Como	25.2 µg/L	Detected	1	B+
265	Oak Ridge North	24.8 µg/L	Detected	0	B+
266	Joaquin	24.2 µg/L	Detected	48	F
267	Jacinto City	23.9 µg/L	Detected	1	B+
268	Mathis	23.8 µg/L	Detected	35	D
269	Montague	23.8 µg/L	Detected	5	D
270	Rosenberg	23.6 µg/L	Detected	1	C-
271	Kilgore	23.3 µg/L	Detected	26	F
272	Snyder	23.3 µg/L	Detected	12	B-
273	Agua Dulce	23.1 µg/L	Detected	4	B+
274	Killeen	23.0 µg/L	Detected	11	F
275	Pearland	23.0 µg/L	Detected	14	F
276	Wimberley	22.8 µg/L	Detected	8	F
277	Jourdanton	22.7 µg/L	Detected	3	C
278	Needville	22.7 µg/L	Detected	2	B
279	Fulshear	22.3 µg/L	Detected	0	A-
280	Pearsall	22.3 µg/L	Detected	2	B+
281	Humble	22.1 µg/L	Detected	1	B+
282	Scottsville	21.9 µg/L	Detected	3	A-
283	Palacios	21.5 µg/L	Detected	9	B
284	Longview	21.4 µg/L	Detected	20	F
285	Hearne	21.3 µg/L	Detected	0	A
286	El Campo	21.2 µg/L	Detected	19	F
287	Missouri City	21.0 µg/L	Detected	6	F
288	Rockdale	21.0 µg/L	Detected	3	C+
289	Mauriceville	21.0 µg/L	Detected	0	A-
290	Douglass	21.0 µg/L	Detected	4	B
291	Hurst	20.8 µg/L	Detected	1	A-
292	Boerne	20.8 µg/L	Detected	24	F
293	Bay City	20.7 µg/L	Detected	14	F
294	Madisonville	20.7 µg/L	Detected	2	B+
295	Lytle	20.6 µg/L	Detected	28	D
296	Milano	20.2 µg/L	Detected	0	A+
297	Denison	20.1 µg/L	Detected	24	F
298	Crystal City	20.1 µg/L	Detected	0	C+
299	Tyler	20.0 µg/L	Detected	53	F
300	Seabrook	19.8 µg/L	Detected	0	B+
301	Graford	19.7 µg/L	Detected	19	C-
302	College Station	19.4 µg/L	Detected	2	B-
303	Deweyville	19.4 µg/L	Detected	1	B-
304	Vidor	19.2 µg/L	Detected	250	F
305	Meadows Place	19.1 µg/L	Detected	0	A-
306	Belton	19.0 µg/L	Detected	22	F
307	Selma	19.0 µg/L	Detected	2	A-
308	Dyess Afb	18.8 µg/L	Detected	0	A-
309	Pasadena	18.7 µg/L	Detected	0	B-
310	Brenham	18.4 µg/L	Detected	20	F
311	Fredericksburg	18.3 µg/L	Detected	129	D
312	Brookshire	18.3 µg/L	Detected	2	A-
313	Ozona	18.3 µg/L	Detected	3	A-
314	Galveston	18.1 µg/L	Detected	2	B+
315	Channelview	18.1 µg/L	Detected	4	B-
316	Diana	18.0 µg/L	Detected	1	B+
317	West University Place	17.9 µg/L	Detected	2	B+
318	Teague	17.8 µg/L	Detected	1	B-
319	Santa Fe	17.8 µg/L	Detected	25	F
320	Harleton	17.7 µg/L	Detected	5	C+
321	Schertz	17.6 µg/L	Detected	0	B+
322	Freeport	17.6 µg/L	Detected	209	F
323	Carrizo Springs	17.6 µg/L	Detected	5	F
324	Angleton	17.5 µg/L	Detected	47	F
325	San Leon	17.5 µg/L	Detected	1	B+
326	Georgetown	17.4 µg/L	Detected	3	F
327	Dickinson	17.4 µg/L	Detected	8	F
328	Pittsburg	17.2 µg/L	Detected	5	F
329	New Braunfels	17.0 µg/L	Detected	15	D
330	Fair Oaks Ranch	17.0 µg/L	Detected	0	B
331	Alba	17.0 µg/L	Detected	5	B
332	Yantis	16.8 µg/L	Detected	5	C+
333	Huntington	16.7 µg/L	Detected	472	F
334	Gilmer	16.5 µg/L	Detected	7	C
335	Dayton	16.5 µg/L	Detected	4	D
336	Round Rock	16.3 µg/L	Detected	17	F
337	Palestine	16.2 µg/L	Detected	15	C
338	La Marque	16.2 µg/L	Detected	3	B
339	Fritch	16.2 µg/L	Detected	3	C
340	Stephenville	15.8 µg/L	Detected	39	F
341	Trophy Club	15.8 µg/L	Detected	0	A+
342	Beaumont	15.7 µg/L	Detected	42	F
343	Breckenridge	15.7 µg/L	Detected	29	C+
344	Lampasas	15.6 µg/L	Detected	14	C-
345	League City	15.5 µg/L	Detected	67	F
346	Kirby	15.5 µg/L	Detected	1	A-
347	Rockport	15.4 µg/L	Detected	20	B-
348	Texas City	15.3 µg/L	Detected	4	B
349	Millsap	15.3 µg/L	Detected	3	B
350	Clyde	15.1 µg/L	Detected	111	F
351	Menard	15.1 µg/L	Detected	1	A-
352	Winnsboro	15.0 µg/L	Detected	7	B
353	Port Lavaca	14.9 µg/L	Detected	47	F
354	Eagle Lake	14.6 µg/L	Detected	2	C+
355	Overton	14.6 µg/L	Detected	15	D
356	Pattison	14.6 µg/L	Detected	1	A-
357	Hitchcock	14.4 µg/L	Detected	16	F
358	Bacliff	14.3 µg/L	Detected	1	B+
359	Athens	14.2 µg/L	Detected	95	F
360	Niederwald	14.2 µg/L	Detected	6	B-
361	Salado	14.2 µg/L	Detected	1	B+
362	Nacogdoches	14.0 µg/L	Detected	17	F
363	Magnolia	13.9 µg/L	Detected	2	F
364	Pflugerville	13.9 µg/L	Detected	19	C+
365	Baytown	13.8 µg/L	Detected	6	F
366	Whitehouse	13.8 µg/L	Detected	12	B+
367	Golden	13.8 µg/L	Detected	0	A+
368	Kempner	13.7 µg/L	Detected	19	B-
369	Silsbee	13.6 µg/L	Detected	22	F
370	Atascosa	13.6 µg/L	Detected	17	D
371	Sealy	13.5 µg/L	Detected	1	B-
372	Tye	13.5 µg/L	Detected	2	C+
373	Hawley	13.4 µg/L	Detected	1	B+
374	Fruitvale	12.8 µg/L	Detected	0	A
375	Manor	12.7 µg/L	Detected	4	B
376	Kyle	12.6 µg/L	Detected	5	A-
377	Victoria	12.5 µg/L	Detected	28	F
378	Gladewater	12.3 µg/L	Detected	64	F
379	Lumberton	12.2 µg/L	Detected	0	B+
380	Luling	12.2 µg/L	Detected	4	B-
381	Grand Prairie	12.1 µg/L	Detected	10	F
382	Mineola	12.1 µg/L	Detected	0	B
383	Coleman	12.1 µg/L	Detected	39	F
384	Universal City	11.9 µg/L	Detected	0	B+
385	Uhland	11.9 µg/L	Detected	1	B+
386	Mineral Wells	11.6 µg/L	Detected	7	C-
387	Crosby	11.6 µg/L	Detected	12	F
388	Vernon	11.6 µg/L	Detected	163	D
389	Live Oak	11.6 µg/L	Detected	0	A
390	San Marcos	11.3 µg/L	Detected	56	C-
391	Granite Shoals	11.3 µg/L	Detected	49	F
392	Garden Ridge	11.3 µg/L	Detected	0	A-
393	Hemphill	11.2 µg/L	Detected	115	F
394	Highlands	11.2 µg/L	Detected	14	F
395	Fairfield	11.2 µg/L	Detected	8	D
396	Burkburnett	11.1 µg/L	Detected	45	B-
397	Saratoga	11.0 µg/L	Detected	1	B
398	Mexia	10.8 µg/L	Detected	7	F
399	Cedar Park	10.7 µg/L	Detected	8	B-
400	Canton	10.6 µg/L	Detected	9	D+
401	Woodville	10.1 µg/L	Detected	7	F
402	Bullard	10.1 µg/L	Detected	3	B
403	Lago Vista	10.0 µg/L	Detected	13	D
404	Irving	10.0 µg/L	Detected	9	C
405	Sheppard Afb	9.9 µg/L	Detected	3	A-
406	Kingsland	9.8 µg/L	Detected	8	B
407	Maxwell	9.8 µg/L	Detected	26	D
408	Marquez	9.7 µg/L	Detected	3	D
409	Porter	9.5 µg/L	Detected	58	F
410	New Caney	9.4 µg/L	Detected	6	F
411	Holliday	9.3 µg/L	Detected	4	B+
412	Leander	9.3 µg/L	Detected	5	F
413	Savannah	9.2 µg/L	Detected	0	A-

FAQ

Frequently asked questions about lithium in Texas

Is lithium in Texas tap water harmful?

Lithium has no federal MCL or health advisory. Some state agencies use 60 µg/L as a screening level. 413 cities in Texas had detectable lithium in UCMR 5 testing. Therapeutic lithium doses (used to treat bipolar disorder) are far higher than typical drinking-water levels, but chronic low-level exposure has been studied for potential thyroid and mood effects.

Where does lithium in tap water come from?

Lithium occurs naturally in groundwater, especially in arid western states with lithium-bearing geology (parts of Nevada, California, North Carolina, Texas). It can also enter water from industrial sources such as battery manufacturing, ceramics, and lithium-mining wastewater. Geothermal hot springs are another natural source.

How can I remove lithium from my drinking water?

Reverse osmosis is highly effective at removing lithium, typically reducing it by 90% or more. Ion exchange systems and distillation also work well. Standard activated carbon filters are NOT effective against lithium. If you rely on a private well in a lithium-rich geological area, consider testing.

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