Lago Vista Water Quality
Texas
According to EPA SDWIS, Lago Vista, Texas is served by 3 community water systems covering about 11,632 people. The same extract lists 14 health-based violation records, most recently coded 0300 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Lago Vista, Texas is delivered through 3 EPA-regulated community water systems serving an estimated 11,632 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 14 violation records across the 3 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 3 distinct EPA contaminant codes: Interim Enhanced Surface Water Treatment Rule, LEAD AND COPPER RULE REVISIONS, TTHM.
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 LAGO VISTA | 8,698 | 7 | Health |
| TRAVIS COUNTY WCID POINT VENTURE | 2,835 | 6 | Health |
| LAKEVIEW HILLS WSC | 99 | 1 | 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 |
|---|---|---|
| CITY OF LAGO VISTA | Interim Enhanced Surface Water Treatment Rule | 2025-08-01 |
| CITY OF LAGO VISTA | Interim Enhanced Surface Water Treatment Rule | 2025-08-01 |
| CITY OF LAGO VISTA | Interim Enhanced Surface Water Treatment Rule | 2025-07-01 |
| CITY OF LAGO VISTA | Interim Enhanced Surface Water Treatment Rule | 2025-07-01 |
| CITY OF LAGO VISTA | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| LAKEVIEW HILLS WSC | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-04-01 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-04-01 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-04-01 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-02-01 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-02-01 |
| TRAVIS COUNTY WCID POINT VENTURE | Interim Enhanced Surface Water Treatment Rule | 2024-02-01 |
| CITY OF LAGO VISTA | TTHM | 2016-07-01 |
| CITY OF LAGO VISTA | TTHM | 2016-07-01 |
What are Lago Vista's health-based records for?
Lago Vista's health-based violation records carry 3 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 |
|---|---|---|
| Interim Enhanced Surface Water Treatment Rule | 10 | 2 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Tthm | 2 | 1 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Lago Vista, Texas? ▼
How many water violations does Lago Vista have in this EPA extract? ▼
What contaminants were found in Lago Vista water? ▼
How many water systems serve Lago Vista? ▼
Where does Lago Vista get its drinking water? ▼
How does Lago Vista compare in Texas?
Of the 1,232 Texas places with at least one community water system on file, Lago Vista ranks #254 by number of systems (3).
Either side of it: Karnes City (3), Kingsland (3), Lake Dallas (3), Lake Jackson (3)
About This Data
Figures here are the current EPA SDWIS extract joined to the 3 community water systems whose service area lists Lago Vista, 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.