B
77

Good Water Quality

Umatilla, OR 97882

Umatilla County · Population served: 8,326 · Data updated March 2026

Water Systems Serving This Area

🌊
POWER CITY WATER CO-OP
Groundwater · Pop. 70
PWSID: OR4100375
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UMATILLA, CITY OF
Groundwater · Pop. 8,256
PWSID: OR4100914

Violation History (Last 5 Years)

19Total (5yr)
0Health-Based
4Major

Water Quality Summary

Understanding Your Water in Umatilla

Tap water quality in Umatilla, Oregon (97882) receives an overall grade of B (Good) with a score of 77 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 10 points above the Oregon state average of 67. The area is served by 2 water systems providing water to approximately 8,326 people, using groundwater sources. The area has 19 violations over the past 5 years, though none were classified as health-based.

Your Score 77/100 B
vs State 10 pts above Oregon avg (67)
vs National 2 pts above national avg (75)

What a Grade B Means

A score of 77/100 means the water in Umatilla, OR is generally good and meets EPA standards, with only minor areas of concern. There may be low levels of detectable contaminants or a small number of non-critical violations. Most residents can feel comfortable with their tap water quality, though basic filtration can provide an extra layer of protection.

Groundwater: drawn from underground aquifers via wells

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Umatilla, Oregon receives a grade of B (Good) with a score of 77/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 97882 is served by 2 water systems using groundwater sources, providing water to approximately 8,326 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

No lead data is currently available for ZIP code 97882. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.

No PFAS ("forever chemicals") were detected in water systems serving Umatilla, Oregon during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.

Water systems serving Umatilla, Oregon have received 19 violations in the last 5 years. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

Water in Umatilla, Oregon shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.

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