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Community Water System · PWS TX1010447

Timberlake Improvement District

Houston, Texas 77024-3430 - drinking water served from groundwater sources to 2,775 people, tracked in EPA SDWIS and UCMR5.

2,775
People served
39
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 39 drinking-water violations at Timberlake Improvement District - below the Texas per-system average.

39
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
2,775
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Timberlake Improvement District

Timberlake Improvement District is a local-owned community water system that delivers drinking water to 2,775 residents in Houston, Texas (Harris County) through 925 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 39 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 36 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 4 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, 610 of 1,147 UCMR5-tested systems have reported PFAS detections (53.2%).

Timberlake Improvement District's 39 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
2,775
Total Violations
39
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
925
County
Harris
School/Daycare
No
MCL Violations
0
Monitoring Violations
36
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 4 2002
Revised Total Coliform Rule MON 4 2018
Lead and Copper Rule MR 3 2014
Consumer Confidence Rule Other 2 2012
Antimony, Total MR 1 2020
LASSO MR 1 2020
Atrazine MR 1 2020
Thallium, Total MR 1 2020
Heptachlor MR 1 2020
Chromium MR 1 2020
Cadmium MR 1 2020
Pentachlorophenol MR 1 2020
HEXACHLOROBENZENE MR 1 2020
Hexachlorocyclopentadiene MR 1 2020
Simazine MR 1 2020
Di(2-ethylhexyl) adipate MR 1 2020
Barium MR 1 2020
Beryllium, Total MR 1 2020
Heptachlor epoxide MR 1 2020
Mercury MR 1 2020
BHC-GAMMA MR 1 2020
Benzo(a)pyrene MR 1 2020
Methoxychlor MR 1 2020
Toxaphene MR 1 2020
Endrin MR 1 2020
Arsenic MR 1 2020
Chlordane MR 1 2020
Selenium MR 1 2020
Di(2-ethylhexyl) phthalate MR 1 2020

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 Timberlake Improvement District.

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 TX1010447 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 Timberlake Improvement District 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
2020 Antimony, Total MR 1 SDWIS / TX1010447 / 1074
2020 LASSO MR 1 SDWIS / TX1010447 / 2051
2020 Atrazine MR 1 SDWIS / TX1010447 / 2050
2020 Thallium, Total MR 1 SDWIS / TX1010447 / 1085
2020 Heptachlor MR 1 SDWIS / TX1010447 / 2065
2020 Chromium MR 1 SDWIS / TX1010447 / 1020
2020 Cadmium MR 1 SDWIS / TX1010447 / 1015
2020 Pentachlorophenol MR 1 SDWIS / TX1010447 / 2326
2020 HEXACHLOROBENZENE MR 1 SDWIS / TX1010447 / 2274
2020 Hexachlorocyclopentadiene MR 1 SDWIS / TX1010447 / 2042
2020 Simazine MR 1 SDWIS / TX1010447 / 2037
2020 Di(2-ethylhexyl) adipate MR 1 SDWIS / TX1010447 / 2035
2020 Barium MR 1 SDWIS / TX1010447 / 1010
2020 Beryllium, Total MR 1 SDWIS / TX1010447 / 1075
2020 Heptachlor epoxide MR 1 SDWIS / TX1010447 / 2067

How Timberlake Improvement District Compares

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

Metric Timberlake Improvement District Texas avg Federal benchmark
Total violations 39 101.5 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 53.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,775 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 Timberlake Improvement District water safe to drink? ▼
Timberlake Improvement District (PWS ID: TX1010447) has 39 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,775 people using Groundwater sources.
How many people does Timberlake Improvement District serve? ▼
Timberlake Improvement District serves 2,775 people in Houston, Texas. It is a Local-owned system using Groundwater water sources with 925 service connections.
What type of violations does Timberlake Improvement District have? ▼
Timberlake Improvement District has 39 total violations: 0 health-based violations (MCL exceedances or treatment failures), 36 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Timberlake Improvement District water? ▼
No PFAS testing data is available for Timberlake Improvement District under the EPA's UCMR5 monitoring program.
What water source does Timberlake Improvement District use? ▼
Timberlake Improvement District 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.