Solano County Drinking Water Report Card

Solano County scores 61 out of 100 on WaterViolations.org's Drinking Water Violation Exposure Score. The county has 10 active public water systems serving 379,624 people, with 6 health-based violations on record and 1 systems with active health-based violations.

This is a research signal, not an official safety grade. Contact the water utility or state drinking-water agency for current notices and guidance.

DLetter Band
61Exposure Score
6Health Violations

Quote-Ready Local Facts

  • 10 active public water systems serve 379,624 people in Solano County.
  • 6 health-based violations are on record, or 1.6 per 100,000 people served.
  • 1 systems have active health-based violations in the current dataset.

Score Breakdown

FactorValuePenalty
Health-based violations per 100,000 people1.619.0 / 60
Systems with active health violations10.0%20.0 / 40

System to Review

The county system with the most health-based violations in this dataset is City of Vallejo, with 4 health-based violations on record.

Reporter Story Kit

Use this section as a starting point for local reporting. These figures are screening signals from EPA SDWIS records, not a substitute for utility notices, state agency guidance, or direct water testing.

Fast local angles

  • Ask which systems account for the active health-based violations and whether residents received required public notices.
  • Compare older health-based violations with the latest Consumer Confidence Reports for affected systems.
  • Ask the state drinking-water agency which violations are resolved, pending, or tied to monitoring/reporting gaps.

Contaminants Driving Health-Based Violations

ContaminantHealth-Based Violations
Unknown6

Active Health-Violation Systems to Check First

SystemCityPopulationActive Health ViolationsActive Total
City of FairfieldFairfield120,37712

Questions to Ask

  • What contaminant or treatment requirement caused each active health-based violation?
  • When did the utility notify customers, and where is that notice posted?
  • Has follow-up sampling shown the issue is resolved?
  • Are private well owners nearby being advised to test for related contaminants?

Download all county report-card scores · Download California violation data

Copyable Reporter Summary

WaterViolations.org gives Solano County, California a Drinking Water Violation Exposure Score of 61/100 (D). The county has 10 active public water systems serving 379,624 people, with 6 health-based violations on record and 1 systems with active health-based violations. The score is based on EPA SDWIS records and is not an official safety grade.

Methodology · County systems · Journalist resources