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Community Water System · PWS TX2200291

Ranch Oaks Subdivision

Austin, Texas 78723-2476 - drinking water served from groundwater sources to 561 people, tracked in EPA SDWIS and UCMR5.

561
People served
90
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 90 drinking-water violations at Ranch Oaks Subdivision - below the Texas per-system average.

90
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
561
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ranch Oaks Subdivision

Ranch Oaks Subdivision is a private-owned community water system that delivers drinking water to 561 residents in Austin, Texas (Tarrant County) through 187 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 90 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 89 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 Fluoride, recorded in 2 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%).

Ranch Oaks Subdivision's 90 violations sit below 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
561
Total Violations
90
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
187
County
Tarrant
School/Daycare
No
MCL Violations
0
Monitoring Violations
89
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Fluoride MR 2 2022
1,2,4-Trichlorobenzene MR 2 2024
Xylenes, Total MR 2 2024
o-Dichlorobenzene MR 2 2024
p-Dichlorobenzene MR 2 2024
Vinyl chloride MR 2 2024
1,1-Dichloroethylene MR 2 2024
trans-1,2-Dichloroethylene MR 2 2024
1,2-Dichloroethane MR 2 2024
1,1,1-Trichloroethane MR 2 2024
Carbon tetrachloride MR 2 2024
1,2-Dichloropropane MR 2 2024
Tetrachloroethylene MR 2 2024
CHLOROBENZENE MR 2 2024
Benzene MR 2 2024
Toluene MR 2 2024
Ethylbenzene MR 2 2024
Picloram MR 2 2022
2,4-D MR 2 2022
Mercury MR 2 2022
Aldicarb sulfoxide MR 2 2022
Aldicarb sulfone MR 2 2022
Carbofuran MR 2 2022
Aldicarb MR 2 2022
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2022
ETHYLENE DIBROMIDE MR 2 2022
cis-1,2-Dichloroethylene MR 2 2024
Dalapon MR 2 2022
Thallium, Total MR 2 2022
Barium MR 2 2022

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 Ranch Oaks 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 TX2200291 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 Ranch Oaks 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
2024 1,2,4-Trichlorobenzene MR 2 SDWIS / TX2200291 / 2378
2024 Xylenes, Total MR 2 SDWIS / TX2200291 / 2955
2024 o-Dichlorobenzene MR 2 SDWIS / TX2200291 / 2968
2024 p-Dichlorobenzene MR 2 SDWIS / TX2200291 / 2969
2024 Vinyl chloride MR 2 SDWIS / TX2200291 / 2976
2024 1,1-Dichloroethylene MR 2 SDWIS / TX2200291 / 2977
2024 trans-1,2-Dichloroethylene MR 2 SDWIS / TX2200291 / 2979
2024 1,2-Dichloroethane MR 2 SDWIS / TX2200291 / 2980
2024 1,1,1-Trichloroethane MR 2 SDWIS / TX2200291 / 2981
2024 Carbon tetrachloride MR 2 SDWIS / TX2200291 / 2982
2024 1,2-Dichloropropane MR 2 SDWIS / TX2200291 / 2983
2024 Tetrachloroethylene MR 2 SDWIS / TX2200291 / 2987
2024 CHLOROBENZENE MR 2 SDWIS / TX2200291 / 2989
2024 Benzene MR 2 SDWIS / TX2200291 / 2990
2024 Toluene MR 2 SDWIS / TX2200291 / 2991

How Ranch Oaks Subdivision Compares

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

Metric Ranch Oaks Subdivision Texas avg Federal benchmark
Total violations 90 101.5 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 561 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 Ranch Oaks Subdivision water safe to drink? ▼
Ranch Oaks Subdivision (PWS ID: TX2200291) has 90 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 561 people using Groundwater sources.
How many people does Ranch Oaks Subdivision serve? ▼
Ranch Oaks Subdivision serves 561 people in Austin, Texas. It is a Private-owned system using Groundwater water sources with 187 service connections.
What type of violations does Ranch Oaks Subdivision have? ▼
Ranch Oaks Subdivision has 90 total violations: 0 health-based violations (MCL exceedances or treatment failures), 89 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ranch Oaks Subdivision water? ▼
No PFAS testing data is available for Ranch Oaks Subdivision under the EPA's UCMR5 monitoring program.
What water source does Ranch Oaks Subdivision use? ▼
Ranch Oaks Subdivision 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.