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Community Water System · PWS TX0310008

Town of Indian Lake

Los Fresnos, Texas 78566-4113 - drinking water served from surface water sources to 846 people, tracked in EPA SDWIS and UCMR5.

846
People served
131
EPA violations
52
Health-based
Untested
UCMR5 result

The verdict

EPA records 131 drinking-water violations at Town of Indian Lake, 40% of them health-based - above the Texas per-system average.

131
Total EPA violations on record
40%
Health-based (MCL / treatment failure)
846
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Town of Indian Lake

Town of Indian Lake is a local-owned community water system that delivers drinking water to 846 residents in Los Fresnos, Texas (Cameron County) through 282 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 131 total violations for this system , of which 52 (40%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 65 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Chlorine, recorded in 56 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%).

Town of Indian Lake's 131 violations sit above the Texas average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
846
Total Violations
131
Health-Based Violations
52
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
282
County
Cameron
School/Daycare
No
MCL Violations
48
Monitoring Violations
65
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 56 2015
TTHM MCL 29 2025
Total Haloacetic Acids (HAA5) MCL 19 2025
Public Notice Other 8 2024
Lead and Copper Rule MR 4 2022
Revised Total Coliform Rule TT 4 2020
Revised Total Coliform Rule MON 4 2020
Consumer Confidence Rule Other 2 2021
Coliform (TCR) Other 1 1992
Coliform (TCR) MR 1 1992

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Town of Indian Lake.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID TX0310008 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Texas Drinking Water Authority

Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch is the primacy agency that licenses and inspects Town of Indian Lake under EPA-delegated authority.

Open TX regulator portal

Source: Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 TTHM MCL 29 SDWIS / TX0310008 / 2950
2025 Total Haloacetic Acids (HAA5) MCL 19 SDWIS / TX0310008 / 2456
2024 Public Notice Other 8 SDWIS / TX0310008 / 7500
2022 Lead and Copper Rule MR 4 SDWIS / TX0310008 / 5000
2021 Consumer Confidence Rule Other 2 SDWIS / TX0310008 / 7000
2020 Revised Total Coliform Rule TT 4 SDWIS / TX0310008 / 8000
2020 Revised Total Coliform Rule MON 4 SDWIS / TX0310008 / 8000
2015 Chlorine MR 56 SDWIS / TX0310008 / 0999
1992 Coliform (TCR) Other 1 SDWIS / TX0310008 / 3100
1992 Coliform (TCR) MR 1 SDWIS / TX0310008 / 3100

How Town of Indian Lake Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Town of Indian Lake Texas avg Federal benchmark
Total violations 131 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 52 22.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 93.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 846 4,524 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Town of Indian Lake water safe to drink? ▼
Town of Indian Lake (PWS ID: TX0310008) has 131 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 846 people using Surface Water sources.
How many people does Town of Indian Lake serve? ▼
Town of Indian Lake serves 846 people in Los Fresnos, Texas. It is a Local-owned system using Surface Water water sources with 282 service connections.
What type of violations does Town of Indian Lake have? ▼
Town of Indian Lake has 131 total violations: 52 health-based violations (MCL exceedances or treatment failures), 65 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Town of Indian Lake water? ▼
No PFAS testing data is available for Town of Indian Lake under the EPA's UCMR5 monitoring program.
What water source does Town of Indian Lake use? ▼
Town of Indian Lake uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.