Arrowhead Lake & Frontier Lake
EPA ID: TX1700171 · 2,208 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Arrowhead Lake & Frontier Lake (TX1700171): no drinking-water violations recorded since 2021. Although compliance varies widely among water utilities nationally, the SDWIS file for Arrowhead Lake & Frontier Lake lists no EPA violations for this supplier, whose service area covers 2,208 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Arrowhead Lake & Frontier Lake Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Arrowhead Lake & Frontier Lake have a median household income of $68,595 and about 17,576 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Arrowhead Lake & Frontier Lake'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
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
Arrowhead Lake & Frontier Lake (EPA ID: TX1700171) is a community water system in Texas that serves approximately 2,208 people from groundwater sources.
This system serves ZIP code 77378 in Willis.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | 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.
- 77378 - Willis
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Arrowhead Lake & Frontier Lake (TX1700171) on EPA.gov.
Frequently Asked Questions
Is Arrowhead Lake & Frontier Lake water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Arrowhead Lake & Frontier Lake 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 Arrowhead Lake & Frontier Lake serve?
Arrowhead Lake & Frontier Lake serves approximately 2,208 people across 1 ZIP code in Texas.
Where does Arrowhead Lake & Frontier Lake get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Arrowhead Lake and Frontier Lake Water Quality Report, TX. https://zipcheckup.com/water-system/tx1700171/
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author = {{ZipCheckup}},
title = {{Arrowhead Lake and Frontier Lake Water Quality Report, TX}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx1700171/}
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