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Community Water System · PWS TX2120064

Lakeway Harbor Subdivision

Austin, Texas 78714-0164 - drinking water served from surface water sources to 831 people, tracked in EPA SDWIS and UCMR5.

831
People served
124
EPA violations
80
Health-based
Untested
UCMR5 result

The verdict

EPA records 124 drinking-water violations at Lakeway Harbor Subdivision, 65% of them health-based - above the Texas per-system average.

124
Total EPA violations on record
65%
Health-based (MCL / treatment failure)
831
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lakeway Harbor Subdivision

Lakeway Harbor Subdivision is a private-owned community water system that delivers drinking water to 831 residents in Austin, Texas (Smith County) through 277 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 124 total violations for this system , of which 80 (65%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 12 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 TTHM, recorded in 40 violations (MCL, health-based). 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%).

Lakeway Harbor Subdivision's 124 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
831
Total Violations
124
Health-Based Violations
80
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
277
County
Smith
School/Daycare
No
MCL Violations
72
Monitoring Violations
12
Treatment Tech Violations
8

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 40 2025
Total Haloacetic Acids (HAA5) MCL 32 2025
Public Notice Other 18 2025
Surface Water Treatment Rule MR 10 2016
Interim Enhanced Surface Water Treatment Rule TT 8 2021
CARBON, TOTAL MR 2 2016

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 Lakeway Harbor Subdivision.

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 TX2120064 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 Lakeway Harbor Subdivision 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 40 SDWIS / TX2120064 / 2950
2025 Total Haloacetic Acids (HAA5) MCL 32 SDWIS / TX2120064 / 2456
2025 Public Notice Other 18 SDWIS / TX2120064 / 7500
2021 Interim Enhanced Surface Water Treatment Rule TT 8 SDWIS / TX2120064 / 0300
2016 Surface Water Treatment Rule MR 10 SDWIS / TX2120064 / 0200
2016 CARBON, TOTAL MR 2 SDWIS / TX2120064 / 2920

How Lakeway Harbor Subdivision Compares

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

Metric Lakeway Harbor Subdivision Texas avg Federal benchmark
Total violations 124 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 80 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 831 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 Lakeway Harbor Subdivision water safe to drink? ▼
Lakeway Harbor Subdivision (PWS ID: TX2120064) has 124 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 831 people using Surface Water sources.
How many people does Lakeway Harbor Subdivision serve? ▼
Lakeway Harbor Subdivision serves 831 people in Austin, Texas. It is a Private-owned system using Surface Water water sources with 277 service connections.
What type of violations does Lakeway Harbor Subdivision have? ▼
Lakeway Harbor Subdivision has 124 total violations: 80 health-based violations (MCL exceedances or treatment failures), 12 monitoring/reporting violations, and 8 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lakeway Harbor Subdivision water? ▼
No PFAS testing data is available for Lakeway Harbor Subdivision under the EPA's UCMR5 monitoring program.
What water source does Lakeway Harbor Subdivision use? ▼
Lakeway Harbor Subdivision 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.