A91/100
OMAK CITY OF — Water Quality Report 2026
Serving 4,940 people · Washington
Water Source
Groundwater
County
—
System ID
WA5363750
Violations
6
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 OMAK CITY OF
Is OMAK CITY OF water safe to drink?
OMAK CITY OF water receives a grade of A (91/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has OMAK CITY OF detected?
31 contaminants were tested in OMAK CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does OMAK CITY OF have any EPA violations?
Yes, OMAK CITY OF has 6 EPA violation(s) on record, with the most recent in 2017. Violation types include Other, MON, MR.
How many people does OMAK CITY OF serve?
OMAK CITY OF serves approximately 4,940 people, Washington.
What type of water does OMAK CITY OF provide?
OMAK CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5363750.
How does OMAK CITY OF compare to other utilities in Washington?
OMAK CITY OF scores 91/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Washington state page for a full comparison of water systems.