Public water system record

City of Santa Rosa

Serves Santa Rosa, Sonoma County, CA · 175,396 people served

Federal records show no health-based violations and no monitoring or reporting issues for City of Santa Rosa in the last ten years.

  • CA4910009
  • SANTA ROSA
  • CA
  • 175,396 served

System profile

Source water Groundwater
ZIP 95401
EPA system ID CA4910009

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • City of Santa Rosa draws water from 5 wells (3 of them for emergency, seasonal or other part-time use).
  • Lead pipe inventory: 0 lead and 0 unknown out of 54,629 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016, and no monitoring or reporting violations either.

Where the water comes from

City of Santa Rosa draws water from 5 wells (3 of them for emergency, seasonal or other part-time use). It also buys water from Sonoma County Water Agency. 4 other public water systems have emergency connections to City of Santa Rosa.

Buys water from

Annual water quality report

City of Santa Rosa must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.