D35/100
BOSTON HARBOR — Water Quality Report 2026
Serving 1,153 people · Washington
Water Source
Groundwater
County
—
System ID
WA5307850
Violations
45
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
2
Health-Related
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
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 BOSTON HARBOR
Is BOSTON HARBOR water safe to drink?
BOSTON HARBOR water receives a grade of D (35/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 45 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BOSTON HARBOR detected?
1 contaminants were tested in BOSTON HARBOR's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does BOSTON HARBOR have any EPA violations?
Yes, BOSTON HARBOR has 45 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, Other. 5 are health-based violations.
How many people does BOSTON HARBOR serve?
BOSTON HARBOR serves approximately 1,153 people, Washington.
What type of water does BOSTON HARBOR provide?
BOSTON HARBOR sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5307850.
How does BOSTON HARBOR compare to other utilities in Washington?
BOSTON HARBOR scores 35/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Washington state page for a full comparison of water systems.