League City Water Quality
Texas
According to EPA SDWIS, League City, Texas is served by 2 community water systems covering about 149,827 people. The same extract lists 131 health-based violation records, most recently coded 1005 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in League City, Texas is delivered through 2 EPA-regulated community water systems serving an estimated 149,827 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 131 violation records across the 2 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: Arsenic, LEAD AND COPPER RULE REVISIONS.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Texas drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| CITY OF LEAGUE CITY | 149,557 | 0 | Clean |
| COTTON BAYOU PARK | 270 | 131 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| COTTON BAYOU PARK | Arsenic | 2025-07-01 |
| COTTON BAYOU PARK | Arsenic | 2025-07-01 |
| COTTON BAYOU PARK | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| COTTON BAYOU PARK | Arsenic | 2023-07-01 |
| COTTON BAYOU PARK | Arsenic | 2023-07-01 |
| COTTON BAYOU PARK | Arsenic | 2023-07-01 |
| COTTON BAYOU PARK | Arsenic | 2023-07-01 |
| COTTON BAYOU PARK | Arsenic | 2023-04-01 |
| COTTON BAYOU PARK | Arsenic | 2023-04-01 |
| COTTON BAYOU PARK | Arsenic | 2023-01-01 |
| COTTON BAYOU PARK | Arsenic | 2023-01-01 |
| COTTON BAYOU PARK | Arsenic | 2023-01-01 |
| COTTON BAYOU PARK | Arsenic | 2023-01-01 |
| COTTON BAYOU PARK | Arsenic | 2022-10-01 |
| COTTON BAYOU PARK | Arsenic | 2022-10-01 |
| COTTON BAYOU PARK | Arsenic | 2022-10-01 |
| COTTON BAYOU PARK | Arsenic | 2022-10-01 |
| COTTON BAYOU PARK | Arsenic | 2022-07-01 |
| COTTON BAYOU PARK | Arsenic | 2022-07-01 |
| COTTON BAYOU PARK | Arsenic | 2022-07-01 |
| COTTON BAYOU PARK | Arsenic | 2022-04-01 |
| COTTON BAYOU PARK | Arsenic | 2022-04-01 |
| COTTON BAYOU PARK | Arsenic | 2022-04-01 |
| COTTON BAYOU PARK | Arsenic | 2022-01-01 |
| COTTON BAYOU PARK | Arsenic | 2022-01-01 |
| COTTON BAYOU PARK | Arsenic | 2021-10-01 |
| COTTON BAYOU PARK | Arsenic | 2021-10-01 |
| COTTON BAYOU PARK | Arsenic | 2021-04-01 |
| COTTON BAYOU PARK | Arsenic | 2021-04-01 |
| COTTON BAYOU PARK | Arsenic | 2021-01-01 |
| COTTON BAYOU PARK | Arsenic | 2021-01-01 |
| COTTON BAYOU PARK | Arsenic | 2020-10-01 |
| COTTON BAYOU PARK | Arsenic | 2020-10-01 |
| COTTON BAYOU PARK | Arsenic | 2020-07-01 |
| COTTON BAYOU PARK | Arsenic | 2020-07-01 |
| COTTON BAYOU PARK | Arsenic | 2020-04-01 |
| COTTON BAYOU PARK | Arsenic | 2020-04-01 |
| COTTON BAYOU PARK | Arsenic | 2020-01-01 |
| COTTON BAYOU PARK | Arsenic | 2020-01-01 |
| COTTON BAYOU PARK | Arsenic | 2019-07-01 |
| COTTON BAYOU PARK | Arsenic | 2019-07-01 |
| COTTON BAYOU PARK | Arsenic | 2019-04-01 |
| COTTON BAYOU PARK | Arsenic | 2019-04-01 |
| COTTON BAYOU PARK | Arsenic | 2018-01-01 |
| COTTON BAYOU PARK | Arsenic | 2018-01-01 |
| COTTON BAYOU PARK | Arsenic | 2017-10-01 |
| COTTON BAYOU PARK | Arsenic | 2017-10-01 |
| COTTON BAYOU PARK | Arsenic | 2017-04-01 |
| COTTON BAYOU PARK | Arsenic | 2017-04-01 |
| COTTON BAYOU PARK | Arsenic | 2017-01-01 |
What are League City's health-based records for?
League City's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Arsenic | 130 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in League City, Texas? ▼
How many water violations does League City have in this EPA extract? ▼
What contaminants were found in League City water? ▼
How many water systems serve League City? ▼
Where does League City get its drinking water? ▼
How does League City compare in Texas?
Of the 1,232 Texas places with at least one community water system on file, League City ranks #405 by number of systems (2).
Either side of it: Lampasas (2), Lancaster (2), Leander (2), Leonard (2)
About This Data
Figures here are the current EPA SDWIS extract joined to the 2 community water systems whose service area lists League City, ranked against the 1,232 Texas places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.