Drinking water quality · 2024
· Verified
What's in League City, TX tap water
11 contaminants were measured in the League City, TX water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 11
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- TX
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound above EPA limits in League City, TX
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFOS (Perfluorooctane sulfonic acid)
● Over EPA limit (1.2×)below national p90 (19.900000000000006 ng/L across detecting U.S. systems)
PFHxS (Perfluorohexane sulfonic acid)
● Below limitbelow national p90 (12.049999999999997 ng/L across detecting U.S. systems)
PFBA
● Detected (no federal limit)above national p90 (18 ng/L across detecting U.S. systems)
PFHxA
● Detected (no federal limit)near national p90 (12.190000000000003 ng/L across detecting U.S. systems)
PFBS
● Detected (no federal limit)below national p90 (13.909999999999979 ng/L across detecting U.S. systems)
Lithium
● Detected (no federal limit)below national p90 (76.59999999999991 mg/L across detecting U.S. systems)
PFPeA
● Detected (no federal limit)6.4× the national p90 (15.95999999999999 ng/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
League City, TX's drinking water comes from ground water, drawn from 7 sources.
Source
- 4 - GRISSOM RD / N WAYSIDE
- 2 - 516 3RD ST
- 3 - COUNTRYSIDE / 5929 FM 518 W
- SOUTH SHORE HARBOUR - 2800 FM 518 E
- + 3 more
Treatment
- PLANT - 4200 GRISSOM RD, LEAGUE CITY
- PLANT - 2050 DICKINSON AVE
- PLANT - COUNTRYSIDE / 5929 FM 518 W
- + 8 more
Distribution
Also buys water from CITY OF HOUSTON, GULF COAST WATER AUTHORITY TX CITY.
Historical readings · EPA Six-Year Review (2012–2019)
2 contaminants historically over EPA limits in League City, TX
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
GROSS BETA worst: 2018 | 6.6 mrem/yr 1.6× | 4 mrem/yr | '13'14'16'17'18'19 |
HAA5 worst: 2015 | 0.0875 mg/L 1.5× | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
TTHM worst: 2015 | 0.0717 mg/L 90% | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
RADIUM 226 228 worst: 2019 | 1.5 pCi/L within below national p90 | 5 pCi/L | '13'19 |
FLUORIDE worst: 2014 | 0.89 mg/L within | 4 mg/L | '13'14'16'17'18'19 |
ARSENIC worst: 2017 | 0.0022 mg/L within below national p90 | 0.01 mg/L | '17 |
NITRATE worst: 2012 | 1.5 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2012 | 1.5 mg/L within | 10 mg/L | '12'13'14'15 |
ATRAZINE worst: 2013 | 0.00037 mg/L within below national p90 | 0.003 mg/L | '13'14'15'17'18'19 |
BARIUM worst: 2017 | 0.244 mg/L within above national p90 | 2 mg/L | '13'14'16'17'18'19 |
NITRITE worst: 2012 | 0.11 mg/L within | 1 mg/L | '12'14'15 |
SIMAZINE worst: 2018 | 0.00018 mg/L within | 0.004 mg/L | '13'15'16'17'18'19 |
ETHYLBENZENE worst: 2019 | 0.002 mg/L within | 0.7 mg/L | '17'19 |
HEXACHLOROCYCLOPENTADIENE worst: 2019 | 0.00012 mg/L within | 0.05 mg/L | '19 |
XYLENES TOTAL worst: 2019 | 0.01 mg/L within | 10 mg/L | '14'15'16'17'18'19 |
TOLUENE worst: 2014 | 0.0006 mg/L within | 1 mg/L | '14'15 |
COPPER worst: 2012 | 1.59 mg/L above national p90 | — | '12'14'17'18 |
LEAD worst: 2012 | 0.0247 mg/L | — | '12'14'17'18 |
DBAA worst: 2012 | 0.0056 mg/L | — | '12'13'14'15'16'17'18'19 |
DCAA worst: 2012 | 0.0558 mg/L | — | '12'13'14'15'16'17'18'19 |
MBAA worst: 2013 | 0.0012 mg/L | — | '13 |
MCAA worst: 2015 | 0.0087 mg/L | — | '15'16'17'18'19 |
TCAA worst: 2012 | 0.0176 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMODICHLOROMETHANE worst: 2012 | 0.0118 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMOFORM worst: 2012 | 0.0121 mg/L | — | '12'13'14'15'16'17'18'19 |
CHLOROFORM worst: 2012 | 0.0468 mg/L | — | '12'13'14'15'16'17'18'19 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.0164 mg/L | — | '12'13'14'15'16'17'18'19 |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Cyanide | 120–120 ug/LRangeRange of Individual Samples | 200 ug/LMCLG | Within the limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| XylenesA group of industrial solvents found in gasoline and paint. | 0.0007 mg/LReported levelSystem-wide | 10 mg/LMCLG | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 1.5–1.5 pCi/LRangeRange of Individual Samples | 0 pCi/LMCLG | Detected — no federal limit |
People also ask about League City, TX's water
+Is League City, TX tap water safe to drink in 2024?
Every one of the 11 contaminants measured in League City, TX's 2024 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in League City, TX tap water?
11 contaminants were measured in League City, TX's 2024 Consumer Confidence Report, spanning metals, inorganic chemicals, and vocs & pesticides. 9 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from League City, TX's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is League City, TX's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.