Hermiston, Oregon: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 20 community water systems serving 24,550+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Hermiston Tap Water Safe to Drink?
Hermiston has 20 community water systems. 17 of 20 graded systems meet all EPA standards (grade A or B), while 3 have recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
Hermiston Water Quality Overview
Hermiston, Oregon is served by 20 community water systems providing water to approximately 24,550 residents. These systems draw from groundwater (19), surface water (1) sources. Hermiston water systems have recorded 31 health-based violations in their history, though none are currently active. Including monitoring and reporting violations, there are 839 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 20 water systems in Hermiston
Looking for water quality data across the whole state? See our full Oregon tap water safety report covering Oregon’s EPA-regulated water systems.
Hermiston Drinking Water: Frequently Asked Questions
Is Hermiston, Oregon tap water safe to drink?
Hermiston has 20 community water systems. 17 of 20 graded systems meet all EPA standards (grade A or B), while 3 have recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
How many water utilities serve Hermiston, Oregon?
20 community water systems serve Hermiston, Oregon, providing water to approximately 24,550 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Hermiston 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 Hermiston drinking water?
EPA violation records for Hermiston 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 Hermiston?
Enter your Hermiston 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).