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WaterSafeCheck

Dupont, WA Tap Water Quality

Water safety reports for all 1 ZIP code in Dupont, Washington

Average Score

99/100

Health Violations

0

ZIP Codes

1

High Lead Risk

0

of 1 ZIP codes

A

About Tap Water in Dupont, WA

Tap water in Dupont, WA ranks among the best in the state, maintaining a remarkable average water quality score of 99/100 across its 1 ZIP code. Based on recent EPA Safe Drinking Water Act compliance records, water provided by City of Dupont Water System and other municipal suppliers has consistently met or exceeded federal safety standards. This top-tier "A" grade reflects strong infrastructure, diligent monitoring by Washington State Department of Health, and low contaminant levels.

A major factor in Dupont's high rating is its flawless health-based violation record. Over the past 5 years of EPA tracking, local water systems have recorded zero health-based violations. This means that regulated contaminants—such as lead, arsenic, and harmful bacteria—have not exceeded the Maximum Contaminant Levels (MCLs) allowed by federal law. Drawing primarily from ground water, the city utilizes advanced filtration to maintain this standard.

Fortunately, the modeled risk for widespread lead exposure in Dupont'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.

Water Quality by ZIP Code — Dupont, WA

Click any ZIP code for the full water quality report

A
98327

Dupont, WA

Score: 99/100✓ No violations

Frequently Asked Questions — Dupont Water Quality

Is tap water safe to drink in Dupont, WA?+
Yes — tap water in Dupont meets all federal EPA standards and earns a A 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 Dupont?+
The average water quality score across 1 ZIP code in Dupont, WA is 99/100. 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 Dupont have lead in its tap water?+
Lead risk ratings in Dupont 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 Dupont?+
Each ZIP code in Dupont 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 Dupont's tap water come from?+
Tap water in Dupont, WA primarily comes from ground water. Groundwater systems pump water from underground aquifers, which is naturally filtered through soil and rock but can still contain naturally occurring contaminants.

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