City of Williams

ZipCheckup's reading of EPA SDWIS for City of Williams (AZ0403026): 1 unresolved EPA violation on record. With 1 unresolved EPA violation, City of Williams is currently out of full compliance - approximately 3,145 people in its service area.

Data: EPA SDWIS

System Overview

City of Williams (EPA ID: AZ0403026) is a community water system in Arizona that serves approximately 3,145 people from surface water sources.

This system serves ZIP code 86046 in Williams.

Violation History

Status breakdown for accepted records with record years 2021-2026: 22 resolved, 4 archived, 0 addressed, and 1 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

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Health Risk Details

Chlorite (EPA limit: 1 mg/L)

Anemia and nervous system effects in infants and children At-risk groups: infants, developing fetuses, people with G6PD deficiency.

Removal methods: ferrous sulfate reduction, activated carbon, reverse osmosis. Find the right filter →

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

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 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

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 AZ or modeled from parcel and building-footprint data.

• 86046 - Williams

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Williams (AZ0403026) on EPA.gov.

Frequently Asked Questions

Is City of Williams water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does City of Williams serve?

City of Williams serves approximately 3,145 people across 1 ZIP code in Arizona.

Where does City of Williams get its water?

The primary water source is surface water.

@misc{zipcheckup-water-system-az0403026,
  author = {{ZipCheckup}},
  title  = {{City of Williams (AZ): 6 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/az0403026/}
}