Question 1

Is Mabana Shores Association water safe to drink?

Accepted Answer

Mabana Shores Association (PWS ID: WA5349600) has 119 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 68 people using Groundwater sources.

Question 2

How many people does Mabana Shores Association serve?

Accepted Answer

EPA SDWIS reports that Mabana Shores Association serves 68 people (this public water system's service population, not the municipal population of Coupeville or any other city). It is a Private-owned system using Groundwater water sources with 42 service connections. The operator address is listed in Coupeville, Washington.

Question 3

What type of violations does Mabana Shores Association have?

Accepted Answer

Mabana Shores Association has 119 total violations: 30 health-based violations (MCL exceedances or treatment failures), 75 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Mabana Shores Association water?

Accepted Answer

No PFAS testing data is available for Mabana Shores Association under the EPA's UCMR5 monitoring program.

Question 5

What water source does Mabana Shores Association use?

Accepted Answer

Mabana Shores Association uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

How does Mabana Shores Association's violation count compare nationally?

Accepted Answer

Mabana Shores Association has 119 recorded EPA SDWIS violations, fewer than 23% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 77% of that cohort has fewer violations than Mabana Shores Association. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	30	2000
Lead and Copper Rule	MR	12	2007
Coliform (TCR)	MR	3	2005
Arsenic	MR	2	2008
CYANIDE	MR	2	2008
Fluoride	MR	2	2008
Mercury	MR	2	2008
Nickel	MR	2	2008
Antimony, Total	MR	2	2008
Thallium, Total	MR	2	2008
Selenium	MR	2	2008
Consumer Confidence Rule	Other	2	2025
TTHM	MR	2	2023
Total Haloacetic Acids (HAA5)	MR	2	2023
Carbofuran	MR	2	2008
Aldicarb sulfone	MR	2	2008
OXAMYL	MR	2	2008
Aldicarb sulfoxide	MR	2	2008
Aldicarb	MR	2	2008
Barium	MR	2	2008
Cadmium	MR	2	2008
Chromium	MR	2	2008
Beryllium, Total	MR	2	2008
cis-1,2-Dichloroethylene	MR	1	2002
DICHLOROMETHANE	MR	1	2002
1,1-Dichloroethylene	MR	1	2002
trans-1,2-Dichloroethylene	MR	1	2002
1,2-Dichloroethane	MR	1	2002
1,1,1-Trichloroethane	MR	1	2002
Carbon tetrachloride	MR	1	2002

Mabana Shores Association

Mabana Shores Association standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Mabana Shores Association

Nationwide peers

Cross-state systems with comparable violation load