Utilities in Washington
9,956 systems (SDWIS/Fed snapshot). Search or browse pages — open any row for PFAS monitoring, violation counts, and filter recommendations.
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COTTON WOOD CAMPGROUND
WA53NR220 · 30 served
COTTON WOOD CG./NACHES R.D.
WA53FS140 · 36 served
COTTONWOOD #1/ENTIAT R.D.
WA53FS139 · 25 served
COTTONWOOD #2/ENTIAT R.D.
WA53FS138 · 25 served
COTTONWOOD CAMPGROUND
WA53FS142 · 25 served
COTTONWOOD GLEN WATER ASSN
WA5315112 · 65 served
COTTONWOOD TERRACE COLONY
WA5315115 · 28 served
COUGAR 2 504
WA5307719 · 15 served
Cougar / Squak Corridor
WA5336280 · 4 served
Cougar Campers
WA53AB548 · 44 served
COUGAR CORNER WATER SYSTEM
WA5307699 · 400 served
COUGAR CREST
WA5315130 · 290 served
COUGAR FLAT/NACHES RANGER DIST
WA53FS145 · 34 served
COUGAR GLEN
WA5315136 · 25 served
COUGAR INN
WA5315140 · 146 served
COUGAR MOUNTAIN
WA5315150 · 220 served
COUGAR MOUNTAIN ACADEMY
WA5301168 · 85 served
COUGAR MOUNTAIN AIRPORT
WA5304462 · 11 served
COUGAR MOUNTAIN MONTESSORI SCHOOL
WA5317397 · 48 served
COUGAR MTN. PARK WT SUPPLY SYS.
WA5315145 · 25 served
COUGAR PARK AND CAMPGROUND
WA5315125 · 248 served
COUGAR RIDGE
WA5324006 · 216 served
COUGAR ROCK CAMPGROUND
WA53NP140 · 9,722 served
COUGAR ROCK WATER SUP
WA5315295 · 126 served
COUGAR RV PARK & CAMPGROUND
WA5373140 · 24 served
COUGAR VALLEY ELEMENTARY
WA5300341 · 508 served
COULEE CITY RV PARK
WA5301143 · 15 served
COULEE CITY TOWN OF
WA5315300 · 944 served
COULEE DAM
WA53IH137 · 25 served
COULEE DAM WATER DEPT
WA5315400 · 1,454 served
COULEE DAM WEST WATER
WA5315350 · 211 served
Coulee Flats Dairy
WA53AB974 · 83 served
COULEE LODGE RESORT
WA5315460 · 64 served
Country Acre Child Care Center
WA53AB088 · 44 served
COUNTRY ACRES WATER CO
WA5315474 · 83 served
COUNTRY BIBLE CHURCH
WA5315477 · 76 served
Country Cabins & Mobile Park
WA5377432 · 29 served
COUNTRY CABINS MOTEL & RV PARK
WA5396357 · 39 served
Country Christian Center
WA53AC625 · 75 served
Country Church of the Open Bible
WA53AB539 · 98 served
COUNTRY CLUB 679
WA5315503 · 175 served
COUNTRY CLUB ESTATES 521
WA5315502 · 113 served
COUNTRY CLUB ESTATES HOA
WA5315501 · 70 served
COUNTRY CLUB ESTATES WATER SYSTEM
WA5318189 · 186 served
COUNTRY CLUB OF SEATTLE
WA5315480 · 37 served
COUNTRY CONVENIENCE PLUS W.S.
WA5335334 · 28 served
COUNTRY CORNER MOBILE HOME PARK
WA5306456 · 95 served
Country Cousins
WA53AD587 · 66 served
COUNTRY CUSTOM MEATS
WA5331640 · 27 served
COUNTRY DREAM ESTATES
WA5315506 · 30 served