Water Quality: Coupeville, WA

110 water systems • 25,056 people served

Multiple Health Violations
2170
Total Violations
224
Health-Based Violations
110
Water Systems
25,056
Population Served

Water Quality Summary

Coupeville is served by 110 public water systems with a combined service population of 25,056 people, and has 2,170 EPA Safe Drinking Water Act violations on record. Critically, 224 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Coupeville's violation count is 1239% above the national average for Washington. Contaminants associated with violations include Barium, E. coli, Selenium, TTHM, Total Haloacetic Acids (HAA5).

Contaminants Found

Barium

Increases blood pressure and causes cardiovascular effects with long-term exposure.

Common source: Natural rock deposits, oil drilling operations, coal power plant waste

EPA limit: 2 mg/L

E. coli

Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.

Common source: Fecal contamination from humans or animals entering the water supply

EPA limit: Zero (no E. coli permitted in drinking water)

Selenium

Hair loss, nail brittleness, and nervous system damage at elevated concentrations.

Common source: Natural geological deposits, mining discharges, oil refinery waste

EPA limit: 0.05 mg/L (50 ppb)

TTHM

Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.

Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water

EPA limit: 0.080 mg/L (80 ppb)

Total Haloacetic Acids (HAA5)

Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.

Common source: Reaction of chlorine disinfectants with organic matter in treated water

EPA limit: 0.060 mg/L (60 ppb)

Water Systems Serving Coupeville

System Name PWSID Source Population Violations
COUPEVILLE TOWN OF WA5315550 Groundwater 4,077 4
CAMANO WATER ASSOCIATION WA5310750 Groundwater 2,592 12
SCATCHET HEAD WATER DISTRICT WA5376470 Groundwater 900 12
CAMALOCH ASSOCIATION WA5310580 Groundwater 825 17
NORTHGATE TERRACE COMMUNITY CLUB WA5361750 Groundwater 750 34
LOST LAKE PROPERTY OWNERS ASSN WA5348345 Groundwater 736 42
WILDERNESS RIDGE COMMUNITY CLUB WA5396876 Groundwater 664 6
MECCA COMMUNITY ASSOCIATION WA5322888 Groundwater 619 13
CAMANO VISTA WATER DISTRICT WA5310748 Groundwater 591 32
SUNVISTA SUNLIGHT BEACH HOA WA5385160 Groundwater 500 9
SARATOGA WATER DISTRICT WA5376300 Groundwater 477 44
COMBINED WATER SYSTEM WA5305795 Groundwater 435 25
CROSSWOODS WATER COMPANY WA5316274 Groundwater 420 4
WHIDBEY WEST WATER ASSOC. WA5336314 Groundwater 415 28
SIERRA COUNTRY CLUB WA5378975 Groundwater 400 35
ROCKY POINT COMMUNITY CLUB WA5304629 Groundwater 320 5
DRIFTWOOD HEIGHTS ASSOCIATION WA5319948 Groundwater 311 10
PARKWOOD MANOR MHP WA5366218 Groundwater 301 2
MARINERS COVE BEACH CLUB INC WA5351730 Groundwater 300 18
CAMANO HILLS WATER COMPANY INC WA5301429 Groundwater 286 12
GOSS LAKE PARK COMMUNITY WA5328575 Groundwater 285 8
WEST RIDGE WATER SYSTEM WA5394942 Groundwater 275 7
WHIDBEY SHORES WATER SYSTEM WA5396070 Groundwater 262 9
SHIRONA WATER SYSTEM WA5378373 Groundwater 243 16
HIDE-AWAY WATER COMPANY INC WA5366586 Groundwater 240 12
JUNIPER BEACH WATER DISTRICT WA5337250 Groundwater 213 27
COUNTRY PLACE MOBILE HOME PARK WA5312003 Groundwater 200 7
POLNELL SHORES COMM ORG INC WA5368373 Groundwater 195 9
HARRIS CUSTER ESTATES WATER ASSN WA5317035 Groundwater 194 7
LONG POINT WATER COMPANY INC WA5348050 Groundwater 182 24
PINE TERRACE WATER ASSOCIATION WA5367600 Groundwater 181 6
MEADOW RIDGE WA5353213 Groundwater 175 8
RACE LAGOON HEIGHTS ASSOCIATION WA5370650 Groundwater 157 8
Mutiny Bay Park Water Association WA5357740 Groundwater 156 3
LIGHTHOUSE SHORES WA5347200 Groundwater 152 4
RHODENA BEACH WATER DISTRICT WA5372150 Groundwater 152 3
FIRCREST COMMUNITY WATER SYSTEM WA5324529 Groundwater 150 7
SUNLIGHT SHORES COUNTRY CLUB WA5333039 Groundwater 150 4
POSSESSION SHORES INC WA5369020 Groundwater 150 6
WAGON WHEEL WA5392070 Groundwater 150 327
THUNDER RIDGE WATER SYSTEM WA5388200 Groundwater 145 8
RACE LAGOON WATER ASSOCIATION WA5303741 Groundwater 141 4
VALLEY HIGH PARK WA5390976 Groundwater 141 8
LAKEVIEW TERRACE WA5345364 Groundwater 140 10
EAGLE VALLEY WATER SYSTEM WA5302217 Groundwater 135 5
LAKE GROVE WATER ASSOCIATION WA5343940 Groundwater 134 14
TERONDA WEST COUNTRY CLUB ASSN. WA5387520 Groundwater 127 6
CAMPO HACIENDA WA5310992 Groundwater 123 20
LIVINGSTON BAY COMMUNITY ASSN WA5347628 Groundwater 120 5
Whispering Pines Homeowners Coop WA5388215 Groundwater 116 7
PIONEER PARK WATER SYSTEM WA5367717 Groundwater 115 4
ELGERWOOD MAINTENANCE ASSOCIATION WA5309131 Groundwater 112 12
BUSH POINT TRAC PARK WA5309900 Groundwater 111 11
IDLEWOOD COMMUNITY WA5335370 Groundwater 111 18
HOLMES HARBOR WATER CO WA5333870 Groundwater 110 23
SKYLINE WEST COMMUNITY CLUB WA5380212 Groundwater 109 3
WAYNES RIDGE WATER ASSOC WA5393909 Groundwater 108 1
WOODLAND ESTATES WA5398183 Groundwater 106 6
FAIRWAY ESTATES INC WA5324524 Groundwater 100 8
Northwest Water WA5302287 Groundwater 99 8
CORNET BAY HEIGHTS WATER ASSN INC WA5315020 Groundwater 99 15
PHEASANT FARM ACRES WA5367187 Groundwater 95 9
SUNSET DEVELOPMENT COMM CLUB WA5386075 Groundwater 92 15
AHEARN WATER SYSTEM WA5325384 Groundwater 91 5
BEACHWOOD WATER COMPANY WA5304980 Groundwater 90 32
PATTONS RETREAT WATER ASSN WA5366588 Groundwater 90 30
SUMMERLAND WA5384903 Groundwater 85 19
FORT KNOX MOBILE HOME PARK WA5359576 Groundwater 79 10
DEVRIES ROAD COMMUNITY ASSN WA5315948 Groundwater 76 45
EASTGATE WA5322030 Groundwater 76 43
LAKEWOOD WEST WATER ASSN. WA5344627 Groundwater 75 25
SUNSET WEST WA5361761 Groundwater 75 14
DAVIS LANDING WATER SYSTEM WA5318140 Groundwater 74 3
SILVER LAKE RD ACREAGE TRACTS WA5310587 Groundwater 73 11
MABANA SHORES ASSOCIATION WA5349600 Groundwater 68 19
KINETH CLAIM COMMUNITY WATER ASSOC. WA5314371 Groundwater 65 5
FIR GROVE MOBILE PARK WA5325137 Groundwater 65 8
POLNELL HEIGHTS WATER ASSOCIATION WA5368370 Groundwater 65 6
CRESCENT ACRES WATER ASSOCIATION WA5315930 Groundwater 64 11
CAMPBELLS GLEN WA5310988 Groundwater 62 35
WHIDBEY HIGHLANDS WATER ASSOC WA5396050 Groundwater 62 11
SILVER SPRINGS ESTATES COMM ASSN WA5379276 Groundwater 61 8
SUBURBAN MOBILE PARK WA5384730 Groundwater 60 44
ADAMS RD COMMUNITY ASSN WA5301977 Groundwater 59 8
Sky Meadows Community Assoc. WA5342705 Groundwater 58 17
NORCLIFFE WATER ASSOCIATION WA5384566 Groundwater 57 63
SLEEPER ACRES COMM. ASSOC. INC. WA5329901 Groundwater 56 9
USELESS BAY SHORES WA5333261 Groundwater 56 6
SHANGRI-LA SHORES INC WA5377850 Groundwater 56 8
DEER LAKE ESTATES WA5318440 Groundwater 55 6
West View Apartments Water System WA5305570 Groundwater 54 2
PONDILLA ESTATES COMMUNITY ASSOC WA5368430 Groundwater 52 3
Bets Water System WA5339991 Groundwater 50 204
TAYLOR ROAD WATER SYSTEM WA5387195 Groundwater 50 46
North Beverly Beach Association WA5311239 Groundwater 46 2
WOODGLEN PRD WATER SYSTEM WA5306529 Groundwater 40 23
WEST BEACH ROAD ASSOCIATION WA5317970 Groundwater 37 8
DOYLE WATER ASSOCIATION WA5319155 Groundwater 36 8
ROCKAWAY BEACH COMMUNITY ASSN WA5306014 Groundwater 35 133
MAPLE HILL PARK WA5309356 Groundwater 35 56
LEISURE ACRES WATER ASSOCIATION WA5346695 Groundwater 35 12
WILDES GROVE COMMUNITY WATER SYS WA5326911 Groundwater 33 28
GEORGETOWN WATER ASSOCIATION WA5312636 Groundwater 32 10
CARE FREE ACRES WA5311135 Groundwater 30 10
LITTLE VALLEY APTS. WA5322057 Groundwater 30 5
Koontz Ranch Water System WA53AD532 Groundwater 30 7
HILLCREST HOMESTEAD TRACTS WATER WA5333120 Groundwater 29 4
Eaglecrest Water & Road Association WA5326091 Groundwater 28 3
TIMARU COMMUNITY WATER ASSOCIATION WA5398215 Groundwater 27 9
POLNELL LANDING WATER ASSOC. WA5355476 Groundwater 24 10

Concerned About Your Water?

A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.

Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.

Other Cities in Washington

Seattle 28 violations • 1,160,858 served Tacoma 477 violations • 628,246 served Vancouver 125 violations • 495,151 served Spokane 1010 violations • 426,660 served Kent 41 violations • 359,974 served Bellevue 1 violations • 317,330 served Everett 115 violations • 282,350 served Lynnwood 16 violations • 268,204 served

View all cities in Washington →

Data Sources

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.

Verify at epa.gov • Search ECHO for WA