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WaterSafeCheck

Coos Bay, OR Tap Water Quality

Water safety reports for all 1 ZIP code in Coos Bay, Oregon

Average Score

81/100

Health Violations

1

ZIP Codes

1

High Lead Risk

1

of 1 ZIP codes

B

About Tap Water in Coos Bay, OR

The drinking water in Coos Bay, OR generally meets all federal health standards, earning a solid B grade with a composite safety score of 81/100 across 1 ZIP code. While the primary water utility, Coos Bay North Bend Wtr Brd, 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.

Over the past 5 years, Coos Bay has recorded 1 health-based violation. While occasional violations can occur due to seasonal changes or temporary infrastructure issues, Coos Bay North Bend Wtr Brd is legally required to resolve these quickly and notify the public via their annual Consumer Confidence Report. The city's water supply, primarily drawn from surface water, is treated to address these specific contaminants.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 1 out of 1 ZIP codes in Coos Bay 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 Coos Bay 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.

Health-Based Contaminant Violations in Coos Bay

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

E. coli

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 — Coos Bay, OR

Click any ZIP code for the full water quality report

B
97420

Coos Bay, OR

Score: 81/1001 violation

Frequently Asked Questions — Coos Bay Water Quality

Is tap water safe to drink in Coos Bay, OR?+
Yes — tap water in Coos Bay 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 Coos Bay?+
The average water quality score across 1 ZIP code in Coos Bay, OR is 81/100. 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 Coos Bay have lead in its tap water?+
1 out of 1 ZIP codes in Coos Bay 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 Coos Bay?+
Each ZIP code in Coos Bay 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 Coos Bay's tap water come from?+
Tap water in Coos Bay, OR 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.

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