C
57

US Water Score: C

Klamath Falls, OR 97601

Klamath County · Population served: 40,475 · Data updated July 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

🌊
KLAMATH FALLS WATER DEPT
Groundwater · Pop. 40,475
PWSID: OR4100443
🌊
ROUND LAKE WATER UTILITIES
Groundwater · Pop. 250
PWSID: OR4100438
🌊
COVE PARTNERSHIP
Groundwater · Pop. 40
PWSID: OR4194026

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
0.796
15 ppb 1 ppb Passed

PFAS / Forever Chemicals

3 detected 1 above comparison value

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLHealth GuidelineStatus
PFOS9.5 ppt4 ppt4 pptAbove comparison value
PFHxS5.8 ppt10 ppt10 pptBelow comparison value
PFBS4.3 ppt2000 ppt100 pptBelow comparison value

Violation History (Last 5 Years)

241Total (5yr)
1Health-Based
85Major

Water Quality Summary

Understanding Your Water in Klamath Falls

Tap water quality in Klamath Falls, Oregon (97601) receives an overall grade of C (Mixed record-based signals) with a score of 57 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 25 points below the Oregon state average of 82. Compared to the national average (75), this area scores significantly lower. The area is served by 3 water systems providing water to approximately 40,475 people, using groundwater sources. Notably, 1 PFAS compound exceeds the EPA final MCL value used for comparison — a significant concern given the persistent nature of these chemicals. Over the past 5 years, water systems here have accumulated 241 violations, including 1 health-based violations.

Your Score 57/100 C
vs State 25 pts below Oregon avg (82)
vs National 18 pts below national avg (75)

What a Grade C Means

A score of 57/100 indicates fair performance in the US Water Score model for Klamath Falls, OR. The records show noteworthy concerns, such as elevated contaminant levels, violation history, or both. Review the detailed contaminant data and official utility reports before making decisions.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

⚠️

Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

Klamath Falls, Oregon receives an internal US Water Score grade of C (Fair) with a score of 57/100. Our model found some system-level concerns, such as violation history or elevated contaminant levels. Review your utility's Consumer Confidence Report and consult a qualified professional for household-specific health questions.

ZIP code 97601 is served by 3 water systems using groundwater sources, providing water to approximately 40,475 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.

Lead levels in Klamath Falls, Oregon are 0.796 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.

Yes — 3 PFAS compounds were detected in records associated with water serving Klamath Falls, Oregon, and 1 result exceeded the numerical EPA MCL value used for comparison. UCMR5 occurrence results alone are not a regulatory compliance determination. PFAS rules and compliance timelines are evolving; verify current information with the utility and EPA.

Water systems serving Klamath Falls, Oregon have received 241 violations in the last 5 years, including 1 health-based violation. 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.

Based on detected contaminants (PFAS), residents in Klamath Falls, Oregon should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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