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Community Water System · PWS TX1700666

Old Egypt Subdivision

Austin, Texas 78723-2476 - drinking water served from groundwater sources to 8,442 people, tracked in EPA SDWIS and UCMR5.

8,442
People served
10
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 10 drinking-water violations at Old Egypt Subdivision - below the Texas per-system average.

10
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
8,442
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Old Egypt Subdivision

Old Egypt Subdivision is a private-owned community water system that delivers drinking water to 8,442 residents in Austin, Texas (Montgomery County) through 2,814 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 10 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 10 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 Lead and Copper Rule, recorded in 4 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Old Egypt Subdivision's 10 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
8,442
Total Violations
10
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
2,814
County
Montgomery
School/Daycare
No
MCL Violations
0
Monitoring Violations
10
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 4 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2024
ETHYLENE DIBROMIDE MR 3 2024

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
PFBA 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 9/25/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFMBA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 9/25/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFPeS 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/25/2024 <20.00 ppt 20.00 ppt Not Detected
ADONA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/25/2024 <6.00 ppt 6.00 ppt Not Detected
PFNA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/25/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 9/25/2024 <2.00 ppt 2.00 ppt Not Detected
PFBS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 9/25/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 9/25/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 9/25/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 9/25/2024 <20.00 ppt 20.00 ppt Not Detected
PFMBA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxS 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpA 9/25/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 9/25/2024 <5.00 ppt 5.00 ppt Not Detected
PFNA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 9/25/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 9/25/2024 <4.00 ppt 4.00 ppt Not Detected

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 Old Egypt 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 TX1700666 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 Old Egypt 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-DIBROMO-3-CHLOROPROPANE MR 3 SDWIS / TX1700666 / 2931
2024 ETHYLENE DIBROMIDE MR 3 SDWIS / TX1700666 / 2946
2020 Lead and Copper Rule MR 4 SDWIS / TX1700666 / 5000

How Old Egypt Subdivision Compares

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

Metric Old Egypt Subdivision Texas avg Federal benchmark
Total violations 10 101.5 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 8,442 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 Old Egypt Subdivision water safe to drink?
Old Egypt Subdivision (PWS ID: TX1700666) has 10 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 8,442 people using Groundwater sources.
How many people does Old Egypt Subdivision serve?
Old Egypt Subdivision serves 8,442 people in Austin, Texas. It is a Private-owned system using Groundwater water sources with 2,814 service connections.
What type of violations does Old Egypt Subdivision have?
Old Egypt Subdivision has 10 total violations: 0 health-based violations (MCL exceedances or treatment failures), 10 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Old Egypt Subdivision water?
No. Old Egypt Subdivision was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Old Egypt Subdivision use?
Old Egypt 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.