Tapcensus

Water quality in Shadow Lake, Washington

Shadow Lake is in King County. 217 active public water systems serve the county; 86 had an EPA violation in the past three years.

Most likely your provider

Cedar River Water & Sewer District WA5341800 · Community water system · Surface water purchased
Serves 28,671 people Rules violated, past 3 years 0 Last sanitary survey Dec 4, 2025 Distance 1.9 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
Orchard Grove
 86 0 2.9 mi
Cedar Mountain Homeowners Assoc
 106 1 3.3 mi
Stone Creek Estates Water Assn.
 62 1 3.6 mi
Mazama Woods
 45 1 4.1 mi
Four Lakes
 212 0 4.3 mi
Valley View Mobile Park LLC
 126 0 4.4 mi
Soos Creek Water & Sewer District
 74,172 0 4.5 mi
Lake Meridian Water District
 24,231 1 4.7 mi
Covington Water District
 56,172 0 5.0 mi
Welchs Water Association
 69 1 5.0 mi
Twenty-Three 800 Tiger Mountain
 129 0 5.3 mi
Mirrormont
 2,083 0 5.4 mi
Sawyerwood Estates Water System
 46 0 5.4 mi
Four Creeks Ranch Water System
 150 1 5.5 mi
King County Water District NO 90
 20,100 1 5.5 mi
Mountain View Water District INC
 91 2 5.7 mi
Maplewood Addition Water Coop
 435 0 5.8 mi
Ravensdale Water Supply
 389 1 5.8 mi
Derbyshire Scenic Acres
 156 0 6.4 mi
Issaquah Valley Water Assn #1
 80 1 6.4 mi
Crestview West Water System
 147 3 7.0 mi
Black Diamond Water Dept
 6,407 0 7.2 mi
Kent Water Department
 166,421 1 7.3 mi
Hazelwood Heights
 85 2 7.3 mi
Renton City of
 108,091 0 7.6 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
Red Dog Saloon Water System
 30 0 0
Lions Memorial Youth Camp
 61 0 0
Rainier Christian School
 150 1 1
Cedar Grove Composting Water System
 50 2 0
St. Sava Serbian Orthodox Church
 32 1 0
Valleyview Christian Church
 88 0 0
Cedar Grove Water Company
 30 1 0
Green Bobbie
 80 0 0
Fraternity Snoqualmie
 34 0 0
King County Shooting Sports Park
 27 0 0
Cougar / Squak Corridor
 4 0 0
Issaquah Christian Church
 42 0 0
Soos Creek Salmon Hatchery
 73 0 0
Cascade View Rodger Scott Water
 25 1 0
Boondocks Tavern
 30 0 0
Flaming Geyser State Park
 1,947 0 0
Green River Gorge Resort
 104 0 0
Cougar Mtn. Park WT Supply Sys.
 25 0 0
Rainbow Trout Club Homeowners Assoc
 30 0 0
Kanaskat-Palmer State Park
 543 0 0
Wabash Pres. Church Supply #1
 71 0 0
Blue Sky RV Park
 68 0 0
Danner Corp
 50 0 0
Port of Seattle/seatac Airport
 49,483 0 0
Cedar Falls Supply
 184 1 0
Snoqualmie Valley Land Company INC
 80 1 1
Tall Chief Resort
 136 0 0
Montessori Spring Valley Supply
 121 1 0
Mount SI Motel
 45 0 0
Red Fall Quick Stop
 30 0 0
Vashon Island Golf & Country Club
 226 0 0
Rogers Group Properties I LLC
 570 1 0
Camp Burton Conference Center
 39 0 0
Camp River Ranch
 76 0 0
Harbor Heights Water
 25 0 0
Carnation Farms
 179 0 0
MUD Mtn Dam Water System
 184 0 0
Morningside Farm Water System
 65 0 0
Paradise Cove Water System
 17 0 0
Sunwater Beach
 17 1 0
Camp Sealth
 62 1 0
Washington Cathedral
 1,001 0 0
Rio Vista
 36 0 0
Shyne School Water System
 79 1 0
Tinkham Campground
 57 0 0
Federation Forest State Park
 281 0 0
Awareness Water System
 76 0 0
Greenwood Water Association
 12 0 0
Middle Fork Campground #2
 54 0 0
Asahel Curtis Picnic Ground East
 80 1 0
All non-community systems
About this data

Water systems are matched to King County, nearest to Shadow Lake 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.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.