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Rohnert Park, California Tap Water Quality

Free EPA data for 7 community water systems serving 55,135+ residents. Click any system to see violations, lead test results, and a safety grade.

ROHNERT PARK, CITY OF B
ROHNERT PARK, CA · 43,821 people · Groundwater 1 health violation in past 5 yrs
SONOMA STATE UNIVERSITY A
ROHNERT PARK, CA · 10,986 people · Groundwater ✓ No recent health violations
SONOMA STATE U.-FAIRFIELD OSBORN PRES A
ROHNERT PARK, CA · 151 people · Groundwater ✓ No recent health violations
TERRACE VIEW WATER SYSTEM A
ROHNERT PARK, CA · 60 people · Groundwater ✓ No recent health violations
GRATON MUTUAL WATER SYSTEM A
ROHNERT PARK, CA · 50 people · Groundwater ✓ No recent health violations
BRANSCOMB MOBILE HOME PARK F
ROHNERT PARK, CA · 42 people · Surface Water ⚠ 2 active health violations
ROLLING OAKS ROAD ASSOCIATION A
ROHNERT PARK, CA · 25 people · Groundwater ✓ No recent health violations

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Rohnert Park Drinking Water: Frequently Asked Questions

Is Rohnert Park, California tap water safe to drink?

Rohnert Park has 7 community water systems regulated by the EPA. Each system is required to test regularly for hundreds of contaminants and publicly report any violations. Click any water system listed above to see its specific violation history, lead test results, and a plain-English safety grade.

How many water utilities serve Rohnert Park, California?

7 community water systems serve Rohnert Park, California, providing water to approximately 55,135 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.

Does Rohnert Park tap water have lead?

Lead in drinking water typically enters from old pipes and fixtures inside homes and buildings, not from the treatment plant. The EPA requires water systems to monitor for lead under the Lead and Copper Rule. Click any water system above to see its most recent 90th-percentile lead test results. Homes built before 1986 are most likely to have lead plumbing components.

What contaminants have been found in Rohnert Park drinking water?

EPA violation records for Rohnert Park water systems are listed on each utility's report page. Common regulated contaminants include disinfection byproducts (TTHMs, HAA5), coliform bacteria, nitrates, and lead. Click any utility above to see its full violation history going back 10 years.

How do I find out which water company serves my address in Rohnert Park?

Enter your Rohnert Park ZIP code in the search box at the top of this page. ClearWater will identify the specific water system serving your area and show you its EPA violation history, lead test results, and an overall safety grade. You can also check your water bill or your utility's annual Consumer Confidence Report (CCR).