Skip to main content
WaterSafeCheck

Pasco, WA Tap Water Quality

Water safety reports for all 2 ZIP codes in Pasco, Washington

Average Score

80/100

Health Violations

6

ZIP Codes

2

High Lead Risk

0

of 2 ZIP codes

B

About Tap Water in Pasco, WA

The drinking water in Pasco, WA generally meets all federal health standards, earning a solid B grade with a composite safety score of 80/100 across 2 ZIP codes. While the primary water utility, Pasco Water Department, maintains adequate compliance with EPA regulations, there have been minor or administrative violations on record. Overall, residents receive safe tap water that is actively monitored by Washington State Department of Health.

The accumulation of 6 health-based violations over the past 5 years highlights systemic challenges within Pasco's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Washington State Department of Health. The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Fortunately, the modeled risk for widespread lead exposure in Pasco's municipal water is relatively low compared to national averages. However, because lead typically enters drinking water through the corrosion of older, individual home plumbing rather than the main supply lines, residents in homes built before 1986 should still exercise caution by running the tap before use.

Health-Based Contaminant Violations in Pasco

EPA records indicate that the following contaminants have exceeded Safe Drinking Water Act Maximum Contaminant Levels (MCLs) in Pasco water systems over the past 5 years.

NickelLead

Note: The presence of a past violation does not necessarily mean current water is unsafe. Utilities are required to take corrective action. Review your Consumer Confidence Report for the latest status.

Water Quality by ZIP Code — Pasco, WA

Click any ZIP code for the full water quality report

B
99301

Pasco, WA

Score: 80/1003 violations
B
99302

Pasco, WA

Score: 79/1003 violations

Frequently Asked Questions — Pasco Water Quality

Is tap water safe to drink in Pasco, WA?+
Yes — tap water in Pasco meets all federal EPA standards and earns a B grade. It is generally safe for healthy adults. As always, running your tap for 30 seconds before use and using a filter adds extra protection for vulnerable populations.
What is the water quality score for Pasco?+
The average water quality score across 2 ZIP codes in Pasco, WA is 80/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Pasco have lead in its tap water?+
Lead risk ratings in Pasco are relatively low based on EPA monitoring data. However, lead in home plumbing is a separate concern — if your home was built before 1986, individual tap testing is recommended.
How do I get the water quality report for Pasco?+
Each ZIP code in Pasco has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Pasco's tap water come from?+
Tap water in Pasco, WA primarily comes from surface water. Surface water systems treat water from rivers, lakes, or reservoirs using filtration, sedimentation, and disinfection before it reaches your tap.

Looking for water quality in other cities in Washington?

View All Cities in Washington →