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WaterSafeCheck

Grass Valley, OR Tap Water Quality

Water safety reports for all 1 ZIP code in Grass Valley, Oregon

Average Score

83/100

Health Violations

0

ZIP Codes

1

High Lead Risk

1

of 1 ZIP codes

B

About Tap Water in Grass Valley, OR

The drinking water in Grass Valley, OR generally meets all federal health standards, earning a solid B grade with a composite safety score of 83/100 across 1 ZIP code. While the primary water utility, Grass Valley Water System, 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 Oregon Health Authority.

A major factor in Grass Valley'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.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 1 out of 1 ZIP codes in Grass Valley are rated as High or Very High risk for lead. This risk is often driven by aging homes with pre-1986 plumbing containing lead solder or service lines. Families in these areas should test their tap water and consider NSF/ANSI 53 certified filters.

⚠ Lead Risk Alert: Some ZIP codes in Grass Valley are rated High or Very High for lead exposure risk based on EPA data. Search your specific ZIP code for a detailed lead level report.

Water Quality by ZIP Code — Grass Valley, OR

Click any ZIP code for the full water quality report

B
97029

Grass Valley, OR

Score: 83/100✓ No violations

Frequently Asked Questions — Grass Valley Water Quality

Is tap water safe to drink in Grass Valley, OR?+
Yes — tap water in Grass Valley 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 Grass Valley?+
The average water quality score across 1 ZIP code in Grass Valley, OR is 83/100. 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 Grass Valley have lead in its tap water?+
1 out of 1 ZIP codes in Grass Valley are rated High or Very High for lead exposure risk. Older homes built before 1986 may have lead service lines or plumbing fixtures. Residents should run their tap for 30 seconds before use and consider a certified NSF/ANSI 53 lead filter.
How do I get the water quality report for Grass Valley?+
Each ZIP code in Grass Valley 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 Grass Valley's tap water come from?+
Tap water in Grass Valley, OR 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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