Tapcensus

Water quality for ZIP code 98051

ZIP 98051 covers Ravensdale, Kent, and Hobart 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

Mariani Water System INC WA5351675 · Community water system · Ground water
Serves 138 people Rules violated, past 3 years 0 Last sanitary survey Dec 16, 2022 Distance 1.6 mi

Other community water systems in King County

155 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Foothills Water Association
271 0 1.9 mi
Evergreen Water & Improvement Assn
150 1 2.0 mi
Cristalina
225 0 2.4 mi
Sugarloaf Water System
468 0 3.9 mi
Ravensdale Water Supply
389 1 4.6 mi
Cumberland Coop Water System
210 0 4.8 mi
Cherokee Bay Community Club INC
2,400 1 5.6 mi
Rumbolz Sunset Water System
106 2 5.8 mi
Noble Woods Water System
37 0 6.0 mi
New Arcadia Water System
40 1 6.2 mi
Black Diamond Water Dept
6,407 0 6.4 mi
Remolif Addition
76 2 6.7 mi
Skyland Park Water Association
47 1 6.7 mi
Sawyerwood Water System
32 0 6.8 mi
Sawyerwood Estates Water System
46 0 7.0 mi
Orchard Grove
86 0 7.2 mi
Stone Creek Estates Water Assn.
62 1 7.4 mi
Wilderness Rim Association
1,867 1 8.6 mi
Walczak 620
256 0 8.7 mi
Covington Water District
56,172 0 8.8 mi
Cedar River Water & Sewer District
28,671 0 9.0 mi
Diamond Springs Water Association
138 0 9.1 mi
Mirrormont
2,083 0 9.5 mi
Mazama Woods
45 1 9.7 mi
Four Lakes
212 0 10.0 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
Rainbow Trout Club Homeowners Assoc
30 0 0
Kanaskat-Palmer State Park
543 0 0
King County Shooting Sports Park
27 0 0
Green River Gorge Resort
104 0 0
Boondocks Tavern
30 0 0
Cedar Falls Supply
184 1 0
Flaming Geyser State Park
1,947 0 0
Cascade View Rodger Scott Water
25 1 0
Lions Memorial Youth Camp
61 0 0
Red Dog Saloon Water System
30 0 0
St. Sava Serbian Orthodox Church
32 1 0
Cedar Grove Water Company
30 1 0
Mount SI Motel
45 0 0
Green Bobbie
80 0 0
Cedar Grove Composting Water System
50 2 0
Rogers Group Properties I LLC
570 1 0
Snoqualmie Valley Land Company INC
80 1 1
Fraternity Snoqualmie
34 0 0
Wabash Pres. Church Supply #1
71 0 0
Blue Sky RV Park
68 0 0
Rainier Christian School
150 1 1
Issaquah Christian Church
42 0 0
Port of Seattle/seatac Airport
49,483 0 0
Soos Creek Salmon Hatchery
73 0 0
Valleyview Christian Church
88 0 0
MUD Mtn Dam Water System
184 0 0
Cougar / Squak Corridor
4 0 0
Tinkham Campground
57 0 0
Federation Forest State Park
281 0 0
Cougar Mtn. Park WT Supply Sys.
25 0 0
Greenwood Water Association
12 0 0
Danner Corp
50 0 0
Tall Chief Resort
136 0 0
Asahel Curtis Picnic Ground East
80 1 0
Asahel Curtis Picnic Ground West
80 1 0
Camp River Ranch
76 0 0
Red Fall Quick Stop
30 0 0
Middle Fork Campground #2
54 0 0
Denny Creek Campground
155 0 0
Montessori Spring Valley Supply
121 1 0
Rio Vista
36 0 0
Carnation Farms
179 0 0
Vashon Island Golf & Country Club
226 0 0
Camp Burton Conference Center
39 0 0
Washington Cathedral
1,001 0 0
Shyne School Water System
79 1 0
Harbor Heights Water
25 0 0
Morningside Farm Water System
65 0 0
Paradise Cove Water System
17 0 0
Awareness Water System
76 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.