Oakdale, California: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 33 community water systems serving 28,241+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Oakdale Tap Water Safe to Drink?
30 of 33 tested water systems in Oakdale meet federal drinking water standards with no active violations. 3 systems have 3 active health-based violations — check individual reports below for details.
Oakdale Water Quality Overview
Oakdale, California is served by 33 community water systems providing water to approximately 28,241 residents. These systems draw from groundwater sources. 3 active health-based violations across Oakdale water systems require attention. Including monitoring and reporting violations, there are 73 total violations on record.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
All 33 water systems in Oakdale
Looking for water quality data across the whole state? See our full California tap water safety report covering California’s EPA-regulated water systems.
Oakdale Drinking Water: Frequently Asked Questions
Is Oakdale, California tap water safe to drink?
30 of 33 tested water systems in Oakdale meet federal drinking water standards with no active violations. 3 systems have 3 active health-based violations — check individual reports below for details.
How many water utilities serve Oakdale, California?
33 community water systems serve Oakdale, California, providing water to approximately 28,241 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Oakdale 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 Oakdale drinking water?
EPA violation records for Oakdale 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 Oakdale?
Enter your Oakdale 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).