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Community Water System · PWS TX1012842

Harris County MUD 167

Houston, Texas 77027-7537 - drinking water served from groundwater sources to 15,837 people, tracked in EPA SDWIS and UCMR5.

15,837
People served
90
EPA violations
61
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 90 drinking-water violations at Harris County MUD 167, 68% of them health-based - below the Texas per-system average.

90
Total EPA violations on record
68%
Health-based (MCL / treatment failure)
15,837
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Harris County MUD 167

Harris County MUD 167 is a local-owned community water system that delivers drinking water to 15,837 residents in Houston, Texas (Harris County) through 5,279 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 61 (68%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 26 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Gross Alpha, Excl. Radon and U, recorded in 32 violations (MCL, health-based). 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%).

Harris County MUD 167'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
15,837
Total Violations
90
Health-Based Violations
61
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,279
County
Harris
School/Daycare
No
MCL Violations
61
Monitoring Violations
26
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MCL 32 2004
Combined Radium (-226 and -228) MCL 29 2004
Lead and Copper Rule MR 23 2018
E. COLI MR 3 2016
Public Notice Other 2 2018

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
NEtFOSAA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFTA 4/24/2024 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 4/24/2024 <6.00 ppt 6.00 ppt Not Detected
PFDA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFBS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 4/24/2024 <7.00 ppt 7.00 ppt Not Detected
PFPeS 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/24/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 4/24/2024 <2.00 ppt 2.00 ppt Not Detected
PFHpA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/24/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/24/2024 <2.00 ppt 2.00 ppt Not Detected
9Cl-PF3ONS 4/24/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/24/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 4/24/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 4/24/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 4/24/2024 <8.00 ppt 8.00 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 Harris County MUD 167.

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 TX1012842 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 Harris County MUD 167 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
2018 Lead and Copper Rule MR 23 SDWIS / TX1012842 / 5000
2018 Public Notice Other 2 SDWIS / TX1012842 / 7500
2016 E. COLI MR 3 SDWIS / TX1012842 / 3014
2004 Gross Alpha, Excl. Radon and U MCL 32 SDWIS / TX1012842 / 4000
2004 Combined Radium (-226 and -228) MCL 29 SDWIS / TX1012842 / 4010

How Harris County MUD 167 Compares

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

Metric Harris County MUD 167 Texas avg Federal benchmark
Total violations 90 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 61 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 15,837 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 Harris County MUD 167 water safe to drink?
Harris County MUD 167 (PWS ID: TX1012842) has 90 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 15,837 people using Groundwater sources.
How many people does Harris County MUD 167 serve?
Harris County MUD 167 serves 15,837 people in Houston, Texas. It is a Local-owned system using Groundwater water sources with 5,279 service connections.
What type of violations does Harris County MUD 167 have?
Harris County MUD 167 has 90 total violations: 61 health-based violations (MCL exceedances or treatment failures), 26 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Harris County MUD 167 water?
No. Harris County MUD 167 was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Harris County MUD 167 use?
Harris County MUD 167 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.