Stable Water Systems in Washington

46 community drinking-water systems in Washington currently rated Stable (MISI 0–20).

Systems in the Stable band (MISI 0–20) show low structural stress across operational, financial, and governance dimensions. These systems generally have manageable compliance postures, adequate capital investment patterns, and sustainable revenue structures.

SystemPop. ServedMISIBand

PORT OF SEATTLE/SEATAC AIRPORT49K19.331Stable

BATTLE GROUND WATER DEPT, CITY OF30K20.000Stable

QUIL CEDA VILLAGE30K10.996Stable

GORGE AMPHITHEATRE25K3.956Stable

NORTH PERRY AVE WATER DISTRICT24K14.649Stable

OAK HARBOR, CITY OF24K18.726Stable

FERNDALE19K18.695Stable

POULSBO, CITY OF18K17.082Stable

PORT TOWNSEND, CITY OF17K20.000Stable

NAVAL AIR STATION/WHIDBEY ISLAND17K12.849Stable

NORTH PENINSULA16K18.352Stable

CHELAN CO PUD 116K18.602Stable

SEQUIM, CITY OF14K17.327Stable

BAINBRIDGE ISLAND, CITY OF13K14.649Stable

DUPONT WATER SYSTEM, CITY OF13K19.290Stable

HOQUIAM WATER DEPARTMENT11K17.668Stable

BIRCH BAY WATER & SEWER DISTRICT9K18.602Stable

INDIAN JOHN REST AREA (EB/WB)8K3.956Stable

TANGLEWILDE #6008K16.624Stable

ELMA, CITY OF7K19.123Stable

FORT WORDEN STATE PARK7K3.956Stable

PASADENA PARK IRR DIST 176K20.000Stable

MOUNTAIN MEADOWS FARM LLP6K19.331Stable

ENERGY, DEPT OF/200W5K3.956Stable

COLVILLE WATER DEPARTMENT5K11.154Stable

SUN LAKES STATE PARK5K3.956Stable

TOUTLE RIVER REST AREA NB/SB5K7.198Stable

MORAN STATE PARK-CASCADE LAKE5K3.956Stable

MORAN STATE PARK-MOUNTAIN LAKE5K3.956Stable

WESTHAVEN STATE PARK5K7.198Stable

SNOQUALMIE CASINO4K19.331Stable

KING COUNTY WATER DISTRICT #454K19.331Stable

CAPE DISAPPOINTMENT STATE PARK4K7.198Stable

ORCHARD AVENUE IRRIGATION DIST 64K18.781Stable

SUQUAMISH4K18.352Stable

IRVIN WATER DISTRICT #64K18.283Stable

STEVENS PASS WATER SYSTEM4K19.331Stable

RYEGRASS WB REST AREA (EB-WB)4K3.956Stable

PACIFIC BEACH STATE PARK4K7.198Stable

LUMMI TRIBAL WATER DISTRICT4K18.352Stable

MILLERSYLVANIA STATE PARK4K7.198Stable

SPOKANE BUSINESS & INDUSTRIAL PARK4K13.018Stable

FORKS MUNICIPAL WATER DEPT3K16.802Stable

WEST SEQUIM BAY INC3K20.000Stable

SURFSIDE HOMEOWNERS3K14.396Stable

SPOKANE, CITY OF17513.018Stable