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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OCEAN MIST RV PARK
WA5305887 · 56 served
OCEAN PARK RETREAT CTR AND U M CMP
WA5362998 · 79 served
OCEAN SHORES OUTDOOR CLUB
WA5363005 · 309 served
OCEAN SHORES WATER DEPT
WA5363008 · 9,347 served
OCEAN SPRAY CRANBERRIES
WA5363012 · 90 served
OCEAN SPRAY CRANBERRIES, INC
WA5337094 · 25 served
OCEAN WEST
WA5363015 · 25 served
OCEANA II EAST
WA5376867 · 80 served
OCEANA II WEST
WA5358106 · 66 served
OCHOA AG UNLIMITED LLC
WA5307336 · 10 served
Ocosta Mobile Home Park LLC
WA5396887 · 26 served
ODD FELLOW PARKS
WA5363028 · 37 served
ODD FELLOWS PUGET BEACH PARK
WA5303537 · 100 served
ODDFELLOWS PARK
WA5335350 · 50 served
ODELL RANCH
WA5363035 · 33 served
ODESSA
WA5363050 · 986 served
Odessa Trading Company
WA53AC139 · 43 served
ODLIN PARK
WA5363105 · 162 served
OFFUT LAKE RESORT
WA5363130 · 34 served
OHana Coffee
WA53AC833 · 52 served
OHANAPECOSH
WA53NP670 · 2,092 served
OHOP VALLEY GROCERY
WA5344951 · 28 served
OIEN CONSTRUCTION
WA5308313 · 18 served
OK COUNTRY STORE H20 SYSTEM
WA5330779 · 33 served
OK RANCH INC
WA5307358 · 13 served
OKANOGAN COUNTY FAIR WATER SYSTEM
WA5334314 · 867 served
OKANOGAN NEIGHBORS
WA53AD186 · 1,600 served
OKANOGAN RIVER RANCHES
WA5363197 · 25 served
OKANOGAN WATER DEPARTMENT CITY OF
WA5363200 · 2,921 served
OKLAHOMA CAMPGROUND HP 1
WA53FS708 · 25 served
OKLAHOMA CAMPGROUND HP 2
WA53FS709 · 25 served
OKSENDAL
WA5325316 · 122 served
OLALLA
WA5363215 · 239 served
OLALLA BAY MARKET
WA5301848 · 36 served
OLALLA FOODS
WA5353425 · 37 served
OLALLA GUEST LODGE
WA5363212 · 62 served
OLALLA HOUSING
WA5302273 · 32 served
OLALLA SCHOOL
WA5363213 · 350 served
Olalla Vineyard & Winery
WA53AD559 · 67 served
OLALLIE CAMPGROUND
WA53FS712 · 25 served
OLD 72 WATER SYSTEM
WA5301995 · 5 served
OLD APOSTOLIC LUTHERAN CHURCH
WA5323862 · 950 served
OLD BANGOR WATER DISTRICT #19
WA5304184 · 120 served
OLD COUNTRY TAVERN
WA5363244 · 4 served
OLD DAY CREEK COMMUNE
WA5363250 · 50 served
Old Dominion
WA53AD854 · 70 served
Old German Baptist Church New Conf
WA5341027 · 140 served
OLD GUIDE WATER ASSN.
WA5321906 · 45 served
OLD GUIDE WATER ASSOCIATION
WA5321337 · 26 served
OLD HALL WATER SYSTEM
WA5353970 · 6 served