B63/100
GRAHAM HILL MUTUAL WATER CO INC — Water Quality Report 2026
Serving 1,474 people · Washington
Water Source
Groundwater
County
—
System ID
WA5328650
Violations
18
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – September 29, 2023Enforcement: 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 GRAHAM HILL MUTUAL WATER CO INC
Is GRAHAM HILL MUTUAL WATER CO INC water safe to drink?
GRAHAM HILL MUTUAL WATER CO INC water receives a grade of B (63/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GRAHAM HILL MUTUAL WATER CO INC detected?
1 contaminants were tested in GRAHAM HILL MUTUAL WATER CO INC's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GRAHAM HILL MUTUAL WATER CO INC have any EPA violations?
Yes, GRAHAM HILL MUTUAL WATER CO INC has 18 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MCL. 4 are health-based violations.
How many people does GRAHAM HILL MUTUAL WATER CO INC serve?
GRAHAM HILL MUTUAL WATER CO INC serves approximately 1,474 people, Washington.
What type of water does GRAHAM HILL MUTUAL WATER CO INC provide?
GRAHAM HILL MUTUAL WATER CO INC sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5328650.
How does GRAHAM HILL MUTUAL WATER CO INC compare to other utilities in Washington?
GRAHAM HILL MUTUAL WATER CO INC scores 63/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Washington state page for a full comparison of water systems.