F0/100

TAHOLAH — Water Quality Report 2026

Serving 1,600 people · Washington

Water Source

Groundwater

County

—

System ID

105300018

Violations

456

Contaminant Test Results

1 contaminant above EPA health goals

Contaminant	Detected	Limit (MCL)	Goal (MCLG)	Status
Lead (90th percentile)	0.001 mg/L	0.015 mg/L	0 mg/L	Above Goal

EPA Violation History

Violations (last 5yr)

Unresolved

Health-Related

TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2025 – September 30, 2025Rule: Stage 1 DBPRVerify on EPA.gov

TIER 3Unresolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2025 – September 30, 2025Rule: Total Coliform RuleVerify on EPA.gov

TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: March 9, 2025Rule: Ground Water RuleVerify on EPA.gov

TIER 2Unresolved

Violation related to Consumer Confidence Report

When: December 11, 2024Rule: Consumer Confidence RuleVerify on EPA.gov

TIER 2Unresolved

Violation related to Consumer Confidence Report

When: December 11, 2024Rule: Consumer Confidence RuleVerify on EPA.gov

TIER 2Unresolved

Violation related to Consumer Confidence Report

When: December 11, 2024Rule: Consumer Confidence RuleVerify on EPA.gov

TIER 2Unresolved

Violation related to Consumer Confidence Report

When: November 15, 2024Rule: Consumer Confidence RuleVerify on EPA.gov

TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: November 1, 2023 – November 30, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – December 21, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 31, 2022 – June 9, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway

TIER 3Resolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2022 – November 2, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway

TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2022 – April 30, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: March 1, 2022 – March 31, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: May 1, 2021 – June 15, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About TAHOLAH

Is TAHOLAH water safe to drink?

TAHOLAH water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 456 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has TAHOLAH detected?

1 contaminants were tested in TAHOLAH's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does TAHOLAH have any EPA violations?

Yes, TAHOLAH has 456 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, Other. 4 are health-based violations.

How many people does TAHOLAH serve?

TAHOLAH serves approximately 1,600 people, Washington. The system provides water to 1 community: Tahola.

What type of water does TAHOLAH provide?

TAHOLAH sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is 105300018.

How does TAHOLAH compare to other utilities in Washington?

TAHOLAH scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Washington state page for a full comparison of water systems.

Cities Served

Tahola