Tapcensus

Water quality for ZIP code 98077

ZIP 98077 covers Cottage Lake, Maltby, and Union Hill-Novelty Hill 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

Woodinville Water District WA5341600 · Community water system · Surface water purchased
Serves 66,699 people Rules violated, past 3 years 0 Last sanitary survey Sep 29, 2022 Distance 1.7 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
Duvall City of
 11,050 0 4.6 mi
Dawnbreaker Water Association
 168 1 4.7 mi
Redmond Water System City of
 163,335 0 5.3 mi
Union Hill Water Association INC
 8,720 0 5.7 mi
Bothell Water City of
 33,643 1 6.3 mi
Lake Margaret Water System
 406 2 7.5 mi
NE Sammamish Sewer & Water District
 9,702 0 7.7 mi
Kirkland City of
 69,243 0 7.8 mi
Northshore Utility District
 99,789 0 7.9 mi
King County Water District 119
 3,800 0 7.9 mi
Rakwanna Park Water Sys INC
 90 2 8.2 mi
Ames Lake Water Assoc INC
 3,224 1 9.4 mi
Trails End
 117 0 10.2 mi
Lake Forest Park Water District
 3,171 0 10.4 mi
Grandview Condominiums
 679 2 10.5 mi
Sammamish Plateau Water & Sewer
 79,362 0 10.6 mi
Bellevue City of
 321,349 0 11.4 mi
Carnation Water System City of
 2,400 1 11.4 mi
North City Water District
 32,847 0 11.6 mi
Beaux Arts Water Department
 345 1 13.3 mi
The Meadows Water System LLC
 127 0 13.9 mi
Edgehill Water Assn
 109 2 14.2 mi
King County Water District #117
 95 0 14.2 mi
Highlands Utility District
 275 0 14.5 mi
Issaquah Water System
 43,584 0 14.9 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
Shyne School Water System
 79 1 0
Washington Cathedral
 1,001 0 0
Awareness Water System
 76 0 0
Carnation Farms
 179 0 0
Red Fall Quick Stop
 30 0 0
Rio Vista
 36 0 0
Camp River Ranch
 76 0 0
Tall Chief Resort
 136 0 0
Cougar Mtn. Park WT Supply Sys.
 25 0 0
Issaquah Christian Church
 42 0 0
Port of Seattle/seatac Airport
 49,483 0 0
Cougar / Squak Corridor
 4 0 0
Blue Sky RV Park
 68 0 0
Fraternity Snoqualmie
 34 0 0
Green Bobbie
 80 0 0
Cedar Grove Water Company
 30 1 0
St. Sava Serbian Orthodox Church
 32 1 0
Cedar Grove Composting Water System
 50 2 0
Rainier Christian School
 150 1 1
Snoqualmie Valley Land Company INC
 80 1 1
Lions Memorial Youth Camp
 61 0 0
Red Dog Saloon Water System
 30 0 0
Mount SI Motel
 45 0 0
Rogers Group Properties I LLC
 570 1 0
Cedar Falls Supply
 184 1 0
Valleyview Christian Church
 88 0 0
King County Shooting Sports Park
 27 0 0
Middle Fork Campground #2
 54 0 0
Rainbow Trout Club Homeowners Assoc
 30 0 0
Money Creek Campground
 61 0 0
Vashon Island Golf & Country Club
 226 0 0
Kanaskat-Palmer State Park
 543 0 0
Soos Creek Salmon Hatchery
 73 0 0
Camp Burton Conference Center
 39 0 0
Green River Gorge Resort
 104 0 0
Cascade View Rodger Scott Water
 25 1 0
Boondocks Tavern
 30 0 0
Flaming Geyser State Park
 1,947 0 0
Harbor Heights Water
 25 0 0
Tinkham Campground
 57 0 0
Sunwater Beach
 17 1 0
Beckler River Campground
 64 0 0
Paradise Cove Water System
 17 0 0
Camp Sealth
 62 1 0
Wabash Pres. Church Supply #1
 71 0 0
Danner Corp
 50 0 0
Morningside Farm Water System
 65 0 0
Montessori Spring Valley Supply
 121 1 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.