Williamsburg Munic Authority
EPA ID: PA4070022 · 1,800 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Williamsburg Munic Authority (PA4070022): 5 violations on record since 2021. Williamsburg Munic Authority's EPA record lists 5 historical violations, and none is listed as open in that record; the utility supplies water to 1,800 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Williamsburg Munic Authority Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Williamsburg Munic Authority have a median household income of $64,152 and about 4,015 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 77% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 38% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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?
Williamsburg Munic Authority'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Pennsylvania
System Overview
Williamsburg Munic Authority (EPA ID: PA4070022) is a community water system in Pennsylvania that serves approximately 1,800 people from groundwater sources.
This system serves ZIP code 16693 in Williamsburg.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 1, 2024 | Gross Alpha | Non-health-based | Resolved |
| October 1, 2024 | Radium-226 | Non-health-based | Resolved |
| October 1, 2024 | Radium-228 | Non-health-based | Resolved |
| April 11, 2021 | Public Notice | Non-health-based | Resolved |
| April 11, 2021 | Public Notice | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Public Notice | Other (notice or report rule) | 2 | No |
| Gross Alpha | Monitoring & Reporting | 1 | No |
| Radium-226 | Monitoring & Reporting | 1 | No |
| Radium-228 | Monitoring & Reporting | 1 | No |
Lead & Copper
Latest reported 90th-percentile lead result for this PWSID: 0.001 mg/L (1996-12-31).
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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 PA or modeled from parcel and building-footprint data.
- 16693 - Williamsburg
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Williamsburg Munic Authority (PA4070022) on EPA.gov.
Frequently Asked Questions
Is Williamsburg Munic Authority water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Williamsburg Munic Authority; its 5 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Williamsburg Munic Authority serve?
Williamsburg Munic Authority serves approximately 1,800 people across 1 ZIP code in Pennsylvania.
Where does Williamsburg Munic Authority get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Williamsburg Munic Authority (PA): 5 EPA Violations. https://zipcheckup.com/water-system/pa4070022/
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author = {{ZipCheckup}},
title = {{Williamsburg Munic Authority (PA): 5 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/pa4070022/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Williamsburg Munic Authority (EPA ID: PA4070022) - request the latest Consumer Confidence Report or ask about specific contaminants.