City of La Coste
EPA ID: TX1630004 · 1,488 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for City of La Coste (TX1630004): no drinking-water violations recorded since 2021. EPA data: City of La Coste - zero violation entries, 1,488 served.
Data: EPA SDWIS
Service Area Map
Coverage area for City of La Coste Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with City of La Coste have a median household income of $102,724 and about 79,383 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
City of La Coste's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 3 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
City of La Coste (EPA ID: TX1630004) is a community water system in Texas that serves approximately 1,488 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0046 mg/L | No | 2024-12-31 |
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of La Coste (TX1630004) on EPA.gov.
Frequently Asked Questions
Is City of La Coste water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for City of La Coste 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 City of La Coste serve?
City of La Coste serves approximately 1,488 people across 3 ZIP codes in Texas.
Where does City of La Coste get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). City of La Coste Water Quality Report, TX. https://zipcheckup.com/water-system/tx1630004/
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title = {{City of La Coste Water Quality Report, TX}},
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