Tapcensus

Water quality for ZIP code 98027

ZIP 98027 covers Mirrormont, Issaquah, East Renton Highlands, Hobart, and Bellevue 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

Issaquah Valley Water Assn #1 WA5336300 · Community water system · Ground water
Serves 80 people Rules violated, past 3 years 1 Last sanitary survey Jul 14, 2022 Distance 1.4 mi
View system details EPA facility report

Other community water systems in King County

155 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Twenty-Three 800 Tiger Mountain
 129 0 1.9 mi
Four Creeks Ranch Water System
 150 1 2.0 mi
Mirrormont
 2,083 0 2.3 mi
Four Lakes
 212 0 2.9 mi
Preston Industrial Park Water Assn
 930 0 3.0 mi
Mazama Woods
 45 1 3.2 mi
Issaquah Water System
 43,584 0 3.7 mi
Cedar Mountain Homeowners Assoc
 106 1 3.8 mi
Alpine Mobile Manor
 45 3 3.9 mi
King County Water District #123
 242 0 3.9 mi
The Meadows Water System LLC
 127 0 4.3 mi
Upper Preston Water Assn
 150 0 4.5 mi
King County Water District NO 90
 20,100 1 4.7 mi
Lake Alice Water Association
 90 0 5.4 mi
Stone Creek Estates Water Assn.
 62 1 5.5 mi
Edgehill Water Assn
 109 2 5.6 mi
Cedar River Water & Sewer District
 28,671 0 5.6 mi
Valley View Mobile Park LLC
 126 0 6.1 mi
Fall City Water Dist. #127
 2,987 1 6.8 mi
Orchard Grove
 86 0 7.2 mi
Sammamish Plateau Water & Sewer
 79,362 0 7.6 mi
Spring Glen Association
 273 0 7.6 mi
Snoqualmie Water
 20,222 0 7.8 mi
Maplewood Addition Water Coop
 435 0 7.9 mi
King County Water District #117
 95 0 7.9 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
Fraternity Snoqualmie
 34 0 0
Issaquah Christian Church
 42 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
Blue Sky RV Park
 68 0 0
Cougar / Squak Corridor
 4 0 0
Lions Memorial Youth Camp
 61 0 0
Red Dog Saloon Water System
 30 0 0
Cougar Mtn. Park WT Supply Sys.
 25 0 0
Rainier Christian School
 150 1 1
Port of Seattle/seatac Airport
 49,483 0 0
Tall Chief Resort
 136 0 0
King County Shooting Sports Park
 27 0 0
Snoqualmie Valley Land Company INC
 80 1 1
Red Fall Quick Stop
 30 0 0
Cedar Falls Supply
 184 1 0
Camp River Ranch
 76 0 0
Mount SI Motel
 45 0 0
Valleyview Christian Church
 88 0 0
Rainbow Trout Club Homeowners Assoc
 30 0 0
Carnation Farms
 179 0 0
Kanaskat-Palmer State Park
 543 0 0
Rogers Group Properties I LLC
 570 1 0
Green River Gorge Resort
 104 0 0
Boondocks Tavern
 30 0 0
Rio Vista
 36 0 0
Cascade View Rodger Scott Water
 25 1 0
Soos Creek Salmon Hatchery
 73 0 0
Flaming Geyser State Park
 1,947 0 0
Washington Cathedral
 1,001 0 0
Shyne School Water System
 79 1 0
Wabash Pres. Church Supply #1
 71 0 0
Danner Corp
 50 0 0
Awareness Water System
 76 0 0
Middle Fork Campground #2
 54 0 0
Tinkham Campground
 57 0 0
Vashon Island Golf & Country Club
 226 0 0
Montessori Spring Valley Supply
 121 1 0
Camp Burton Conference Center
 39 0 0
Harbor Heights Water
 25 0 0
MUD Mtn Dam Water System
 184 0 0
Paradise Cove Water System
 17 0 0
Sunwater Beach
 17 1 0
Morningside Farm Water System
 65 0 0
Asahel Curtis Picnic Ground East
 80 1 0
Asahel Curtis Picnic Ground West
 80 1 0
Camp Sealth
 62 1 0
Denny Creek Campground
 155 0 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.