C44/100
TAPPS ISLAND WATER SYSTEM — Water Quality Report 2026
Serving 1,500 people · Washington
Water Source
Groundwater
County
—
System ID
WA5387181
Violations
25
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2025 – May 31, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – June 18, 2024Enforcement: 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 TAPPS ISLAND WATER SYSTEM
Is TAPPS ISLAND WATER SYSTEM water safe to drink?
TAPPS ISLAND WATER SYSTEM water receives a grade of C (44/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 25 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has TAPPS ISLAND WATER SYSTEM detected?
2 contaminants were tested in TAPPS ISLAND WATER SYSTEM's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does TAPPS ISLAND WATER SYSTEM have any EPA violations?
Yes, TAPPS ISLAND WATER SYSTEM has 25 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, Other, MR. 5 are health-based violations.
How many people does TAPPS ISLAND WATER SYSTEM serve?
TAPPS ISLAND WATER SYSTEM serves approximately 1,500 people, Washington.
What type of water does TAPPS ISLAND WATER SYSTEM provide?
TAPPS ISLAND WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5387181.
How does TAPPS ISLAND WATER SYSTEM compare to other utilities in Washington?
TAPPS ISLAND WATER SYSTEM scores 44/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Washington state page for a full comparison of water systems.