Mcneil Island Water

ZipCheckup's reading of EPA SDWIS for Mcneil Island Water (WA5352900): 1 unresolved EPA violation on record. Mcneil Island Water's current EPA file includes 1 unresolved violation - every outstanding finding is documented in federal records for this utility, which supplies water to approximately 692 residents across its service territory.

Data: EPA SDWIS

System Overview

Mcneil Island Water (EPA ID: WA5352900) is a community water system in Washington that serves approximately 692 people from groundwater sources.

This system provides water to 2 ZIP codes across 2 communities.

Violation History

Status breakdown for accepted records with record years 2021-2026: 6 resolved, 2 archived, 1 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

Contaminants Detected

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

Health Risk Details

E. coli (EPA limit: Zero tolerance (any positive sample triggers immediate action))

Severe GI illness; potentially fatal kidney failure in children At-risk groups: children under 5, elderly, immunocompromised individuals, pregnant women.

Removal methods: UV disinfection (99.99%), chlorination, 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.

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 WA or modeled from parcel and building-footprint data.

• 98303 - Anderson Island
• 98351 - Longbranch

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mcneil Island Water (WA5352900) on EPA.gov.

Frequently Asked Questions

Is Mcneil Island Water water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Mcneil Island Water. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.

How many people does Mcneil Island Water serve?

Mcneil Island Water serves approximately 692 people across 2 ZIP codes in Washington.

Where does Mcneil Island Water get its water?

The primary water source is groundwater.

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  author = {{ZipCheckup}},
  title  = {{Mcneil Island Water (WA): 7 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/wa5352900/}
}