Suisun-solano Water Authority

ZipCheckup's reading of EPA records for Suisun-solano Water Authority (CA4810005): 2 violations recorded with unresolved status in the SDWIS data used. EPA record snapshot: Suisun-solano Water Authority, 2 open violations, 29,105 people served.

Data: EPA SDWIS

System Overview

Suisun-solano Water Authority (EPA ID: CA4810005) is a community water system in California that serves approximately 29,105 people from surface water sources.

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

ZIP-Area Home Safety Context: A (85/100)

This is the average Home Safety Score for 1 of 2 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

Status breakdown for accepted records with record years 2021-2026: 10 resolved, 0 archived, 0 addressed, and 2 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

Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)

Increased risk of cancer

Treatment options (verify a product is certified to reduce this contaminant): granular activated carbon (GAC), carbon block filter, 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

2 of 2 ZIP records with known zones are in EPA Radon Zone 3.

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 CA or modeled from parcel and building-footprint data.

• 94533 - Fairfield
• 94585 - Suisun City

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Suisun-solano Water Authority (CA4810005) on EPA.gov.

Frequently Asked Questions

Is Suisun-solano Water Authority water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Suisun-solano Water Authority. 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 Suisun-solano Water Authority serve?

Suisun-solano Water Authority serves approximately 29,105 people across 2 ZIP codes in California.

Where does Suisun-solano Water Authority get its water?

The primary water source is surface water.

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  author = {{ZipCheckup}},
  title  = {{Suisun-solano Water Authority (CA): 11 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ca4810005/}
}