TapScore USA

MAPLE HILL PARK EPA Drinking Water Compliance Record

TapScore summarizes EPA Safe Drinking Water Information System records for public water system WA5309356. It does not test household tap water or determine whether water is currently safe to drink.

D

Several health-based records

TapScore compliance-history grade

19 EPA violation records from July 1, 2021 through June 30, 2026

4 classified as health-based

System details

PWSID
WA5309356
Population served
35
Water source
Ground Water
Owner type
Private
State
Washington
EPA region
10
All historical records
60
Not marked resolved
51

How to read this grade

Grade D means “Several health-based records” under TapScore's published method. It is a comparison of recent EPA compliance records, not an EPA grade, laboratory result, health recommendation, or guarantee of present water quality.

EPA contaminant categories in violation records

EPA categoryClassificationRecords
NitrateHealth-based record12
ArsenicMonitoring/reporting record2
Beryllium, TotalMonitoring/reporting record2
SeleniumMonitoring/reporting record2
CadmiumMonitoring/reporting record2
FluorideMonitoring/reporting record2
BariumMonitoring/reporting record2
NickelMonitoring/reporting record2
ChromiumMonitoring/reporting record2
CyanideMonitoring/reporting record2
BerylliumMonitoring/reporting record2
NitriteMonitoring/reporting record2
ThalliumMonitoring/reporting record2
Thallium, TotalMonitoring/reporting record2
DiquatMonitoring/reporting record1
1,2-DichloroethaneMonitoring/reporting record1
ChloramineMonitoring/reporting record1
1,1,1-TrichloroethaneMonitoring/reporting record1
1,1,2-TrichloroethaneMonitoring/reporting record1
CHLOROBENZENEMonitoring/reporting record1

Showing the 20 categories with the most records out of 36 categories in this system's history.

These are compliance records associated with an EPA contaminant code, not current tap-water test results or proof that a substance is presently detected.

Violation history by year

2025
2
2024
2
2022
14
2021
1
2020
1
2019
33
2017
2
2013
1
2012
1
2007
1

Historical counts may include resolved records. For current notices and local sampling results, check the utility's latest Consumer Confidence Report and your state drinking-water agency.

Reported service area

Cities served

Coupeville

ZIP codes served

98239

County: Island