Arlington, Washington: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 51 community water systems serving 27,117+ residents. See violations, PFAS results, lead test results, and safety grades — free.
EPA data last updated: 2026-06-24
Is Arlington Tap Water Safe to Drink?
Based on the latest EPA data, Arlington tap water meets all federal drinking water standards. All 51 tested systems have received a safety grade of A or B, with no active health-based violations. 1 system has been tested for PFAS (forever chemicals).
Arlington Water Quality Overview
Arlington, Washington is served by 51 community water systems providing water to approximately 27,117 residents. These systems draw from groundwater (42), surface water purchased (9) sources. Arlington water systems have no recorded health-based violations. Including monitoring and reporting violations, there are 594 total violations on record.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
Showing top 50 of 51 water systems by population served
Looking for water quality data across the whole state? See our full Washington tap water safety report covering all Washington’s EPA-regulated water systems.
Arlington Drinking Water: Frequently Asked Questions
Is Arlington, Washington tap water safe to drink?
Based on the latest EPA data, Arlington tap water meets all federal drinking water standards. All 51 tested systems have received a safety grade of A or B, with no active health-based violations. 1 system has been tested for PFAS (forever chemicals).
How many water utilities serve Arlington, Washington?
51 community water systems serve Arlington, Washington, providing water to approximately 27,117 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Arlington 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 Arlington drinking water?
EPA violation records for Arlington 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 Arlington?
Enter your Arlington 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).