North Hardin Water Supply Corporation
EPA ID: TX1000015 · 7,755 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for North Hardin Water Supply Corporation (TX1000015): no EPA violations recorded in the last five years. Zero violations in five consecutive years of EPA monitoring - North Hardin Water Supply Corporation 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 7,755 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for North Hardin Water Supply Corporation Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The North Hardin Water Supply Corporation serves a community with a median household income of $61,084 and an estimated 17,132 residents across its service area. Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
North Hardin Water Supply Corporation's water is pumped from underground aquifers. 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
North Hardin Water Supply Corporation (EPA ID: TX1000015) is a community water system in Texas that serves approximately 7,755 people from groundwater sources.
This system serves ZIP code 77656 in Silsbee.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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.
- 77656 - Silsbee
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for North Hardin Water Supply Corporation (TX1000015) on EPA.gov.
Frequently Asked Questions
Is North Hardin Water Supply Corporation water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for North Hardin Water Supply Corporation 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 North Hardin Water Supply Corporation serve?
North Hardin Water Supply Corporation serves approximately 7,755 people across 1 ZIP code in Texas.
Where does North Hardin Water Supply Corporation get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
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.). North Hardin Water Supply Corporation Water Report, TX. https://zipcheckup.com/water-system/tx1000015/
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