Tapcensus

Water quality for ZIP code 98118

ZIP 98118 covers Seattle in King County, Washington, one of 86 ZIP codes in the county. 217 active public water systems serve the county; 86 had an EPA violation in the past three years.

Most likely your provider

Seattle Public Utilities WA5377050 · Community water system · Surface water
Serves 1,161,961 people Rules violated, past 3 years 0 Last sanitary survey Jul 28, 2025 Distance 6.4 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in King County

155 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Mercer Island City of
 31,057 0 2.4 mi
Skyway Water & Sewer
 12,036 0 3.6 mi
Beaux Arts Water Department
 345 1 4.3 mi
King County Water District #20
 48,469 0 4.4 mi
Coal Creek Utility District
 15,989 0 4.7 mi
King County Water District #125
 21,904 1 5.0 mi
Tukwila Water Department
 36,298 0 5.1 mi
Renton City of
 108,091 0 5.5 mi
King County Water District #117
 95 0 5.9 mi
Bellevue City of
 321,349 0 6.5 mi
King County Water District #49
 23,492 0 6.8 mi
Maplewood Addition Water Coop
 435 0 7.1 mi
Grandview Condominiums
 679 2 7.4 mi
Trails End
 117 0 7.6 mi
Edgehill Water Assn
 109 2 8.4 mi
Valley View Mobile Park LLC
 126 0 8.9 mi
King County Water District NO 90
 20,100 1 8.9 mi
Highline Water District
 100,170 0 9.2 mi
Soos Creek Water & Sewer District
 74,172 0 9.4 mi
Mountain View Water District INC
 91 2 9.6 mi
Heights Water
 2,051 1 9.9 mi
King County Water District #54
 5,373 0 10.0 mi
Kirkland City of
 69,243 0 10.1 mi
Issaquah Water System
 43,584 0 10.4 mi
Kent Water Department
 166,421 1 10.9 mi
All 156 community water systems in King County
Non-community systems in King County (61: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Cougar Mtn. Park WT Supply Sys.
 25 0 0
Cougar / Squak Corridor
 4 0 0
Rainier Christian School
 150 1 1
Issaquah Christian Church
 42 0 0
Cedar Grove Composting Water System
 50 2 0
Red Dog Saloon Water System
 30 0 0
Fraternity Snoqualmie
 34 0 0
Lions Memorial Youth Camp
 61 0 0
Cedar Grove Water Company
 30 1 0
Green Bobbie
 80 0 0
Valleyview Christian Church
 88 0 0
St. Sava Serbian Orthodox Church
 32 1 0
Washington Cathedral
 1,001 0 0
Vashon Island Golf & Country Club
 226 0 0
Red Fall Quick Stop
 30 0 0
Camp Burton Conference Center
 39 0 0
Shyne School Water System
 79 1 0
Blue Sky RV Park
 68 0 0
Harbor Heights Water
 25 0 0
Tall Chief Resort
 136 0 0
Sunwater Beach
 17 1 0
Paradise Cove Water System
 17 0 0
Soos Creek Salmon Hatchery
 73 0 0
Camp Sealth
 62 1 0
Carnation Farms
 179 0 0
Morningside Farm Water System
 65 0 0
Port of Seattle/seatac Airport
 49,483 0 0
Camp River Ranch
 76 0 0
Montessori Spring Valley Supply
 121 1 0
Danner Corp
 50 0 0
King County Shooting Sports Park
 27 0 0
Cascade View Rodger Scott Water
 25 1 0
Rio Vista
 36 0 0
Wabash Pres. Church Supply #1
 71 0 0
Flaming Geyser State Park
 1,947 0 0
Boondocks Tavern
 30 0 0
Snoqualmie Valley Land Company INC
 80 1 1
Green River Gorge Resort
 104 0 0
Rainbow Trout Club Homeowners Assoc
 30 0 0
Awareness Water System
 76 0 0
Kanaskat-Palmer State Park
 543 0 0
Cedar Falls Supply
 184 1 0
Mount SI Motel
 45 0 0
Rogers Group Properties I LLC
 570 1 0
MUD Mtn Dam Water System
 184 0 0
Middle Fork Campground #2
 54 0 0
Tinkham Campground
 57 0 0
Federation Forest State Park
 281 0 0
Asahel Curtis Picnic Ground East
 80 1 0
Asahel Curtis Picnic Ground West
 80 1 0
All non-community systems
About this data

Water systems are matched to King County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.