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Community Water System · PWS TX2460046

San Gabriel River Ranches

Austin, Texas 78723-2476 - drinking water served from groundwater sources to 891 people, tracked in EPA SDWIS and UCMR5.

891
People served
218
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 218 drinking-water violations at San Gabriel River Ranches - above the Texas per-system average.

218
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
891
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: San Gabriel River Ranches

San Gabriel River Ranches is a private-owned community water system that delivers drinking water to 891 residents in Austin, Texas (Williamson County) through 297 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 218 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 152 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 52 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%).

San Gabriel River Ranches's 218 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
891
Total Violations
218
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
297
County
Williamson
School/Daycare
No
MCL Violations
0
Monitoring Violations
152
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 52 2012
Chlorine MR 48 2009
Public Notice Other 17 2015
Consumer Confidence Rule Other 14 2009
Lead and Copper Rule MR 8 2024
Arsenic MR 4 2004
Cadmium MR 4 2004
Selenium MR 4 2004
Antimony, Total MR 4 2004
Thallium, Total MR 4 2004
Barium MR 4 2004
Nitrate MR 4 2004
Revised Total Coliform Rule MON 4 2019
Mercury MR 4 2004
Beryllium, Total MR 4 2004
Chromium MR 4 2004

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 San Gabriel River Ranches.

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 TX2460046 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 San Gabriel River Ranches 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
2024 Lead and Copper Rule MR 8 SDWIS / TX2460046 / 5000
2019 Revised Total Coliform Rule MON 4 SDWIS / TX2460046 / 8000
2015 Public Notice Other 17 SDWIS / TX2460046 / 7500
2012 Coliform (TCR) MR 52 SDWIS / TX2460046 / 3100
2009 Chlorine MR 48 SDWIS / TX2460046 / 0999
2009 Consumer Confidence Rule Other 14 SDWIS / TX2460046 / 7000
2004 Arsenic MR 4 SDWIS / TX2460046 / 1005
2004 Cadmium MR 4 SDWIS / TX2460046 / 1015
2004 Selenium MR 4 SDWIS / TX2460046 / 1045
2004 Antimony, Total MR 4 SDWIS / TX2460046 / 1074
2004 Thallium, Total MR 4 SDWIS / TX2460046 / 1085
2004 Barium MR 4 SDWIS / TX2460046 / 1010
2004 Nitrate MR 4 SDWIS / TX2460046 / 1040
2004 Mercury MR 4 SDWIS / TX2460046 / 1035
2004 Beryllium, Total MR 4 SDWIS / TX2460046 / 1075

How San Gabriel River Ranches Compares

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

Metric San Gabriel River Ranches Texas avg Federal benchmark
Total violations 218 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 891 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 San Gabriel River Ranches water safe to drink? ▼
San Gabriel River Ranches (PWS ID: TX2460046) has 218 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 891 people using Groundwater sources.
How many people does San Gabriel River Ranches serve? ▼
San Gabriel River Ranches serves 891 people in Austin, Texas. It is a Private-owned system using Groundwater water sources with 297 service connections.
What type of violations does San Gabriel River Ranches have? ▼
San Gabriel River Ranches has 218 total violations: 0 health-based violations (MCL exceedances or treatment failures), 152 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in San Gabriel River Ranches water? ▼
No PFAS testing data is available for San Gabriel River Ranches under the EPA's UCMR5 monitoring program.
What water source does San Gabriel River Ranches use? ▼
San Gabriel River Ranches uses Groundwater 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.