Harris County Municipal Utility District 157
EPA ID: TX1011430 · 13,062 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Harris County Municipal Utility District 157 (TX1011430): no EPA violations recorded in the last five years. Zero violations in five consecutive years of EPA monitoring - Harris County Municipal Utility District 157 has held a clean track record across every reporting cycle in that span, with no enforcement activity of any kind on file for the full service population of 13,062 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Harris County Municipal Utility District 157 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Harris County Municipal Utility District 157 serves a community with a median household income of $85,934 and an estimated 123,042 residents across its service area.
Environmental Justice Note: 50% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Harris County Municipal Utility District 157's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 5 detections recorded.
Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Harris County Municipal Utility District 157 (EPA ID: TX1011430) is a community water system in Texas that serves approximately 13,062 people from surface water sources.
This system serves ZIP code 77449 in Katy.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TX or modeled from parcel and building-footprint data.
- 77449 - Katy
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Harris County Municipal Utility District 157 (TX1011430) on EPA.gov.
Frequently Asked Questions
Is Harris County Municipal Utility District 157 water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Harris County Municipal Utility District 157 in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Harris County Municipal Utility District 157 serve?
Harris County Municipal Utility District 157 serves approximately 13,062 people across 1 ZIP code in Texas.
Where does Harris County Municipal Utility District 157 get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Harris County Municipal Utility District 157, TX. https://zipcheckup.com/water-system/tx1011430/
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