Tapcensus

Water quality in Schwana, Washington

Schwana is in Grant County. 267 active public water systems serve the county; 87 had an EPA violation in the past three years.

Most likely your provider

Sentinel Gap Water Assn WA5376620 · Community water system · Ground water
Serves 226 people Rules violated, past 3 years 2 Last sanitary survey Sep 2, 2025 Distance 0.1 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 Grant County

80 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Beverly Water District
 120 2 1.0 mi
Wanapum Village
 305 1 4.4 mi
Mattawa City of
 5,370 2 6.1 mi
Desert Aire Owner Assn
 2,856 0 9.4 mi
Royal City Water
 3,389 1 15.2 mi
Sunland Estates Homeowners Assn
 1,480 1 18.2 mi
George City of
 1,035 2 18.4 mi
Royal Water District
 430 1 21.7 mi
The Village at Colockum Ridge
 144 1 23.4 mi
Crescent Bar System
 1,108 0 26.7 mi
Desert Hills
 30 0 27.6 mi
Weiler-Martin Tracts Water Assn
 1,163 2 28.3 mi
Sun Desert INC
 27 2 28.3 mi
Sunserra at Crescent Bar
 1,000 2 28.5 mi
Quincy Water Department City of
 8,415 1 28.9 mi
Sunrise Water Association
 250 1 29.0 mi
Marine View Home Owners Assn
 87 1 29.3 mi
Golden Valley Water Assn
 138 1 30.0 mi
Crescent View Condominium Owners
 243 1 30.6 mi
Country Club Estates Water System
 186 0 33.4 mi
Silver Sands Condo Water
 37 0 33.5 mi
Westshore Water Company
 153 2 34.5 mi
Pelican Point by Cascadia LLC
 1,357 1 34.5 mi
First Potholes Water Users Assn
 90 2 34.5 mi
Diamond Point Water System
 110 0 35.0 mi
All 81 community water systems in Grant County
Non-community systems in Grant County (186: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Wanapum Maintenance Center
 70 0 0
Port of Mattawa Ind Parks 2 & 4
 110 2 0
Skyline South Fwh
 51 0 0
Randy Allred Orchards
 43 0 0
Grant Rd 25
 96 0 0
Mac Thom Orchards
 84 0 0
Tnt Farmworker Housing
 45 0 0
Soaring Eagle #6
 81 0 0
Desert Sands II Fwh
 100 0 0
Cimmaron Farmworker Housing
 46 0 0
Eilers Housing
 48 0 0
Monson Fruit Rd 9 H2a Housing
 96 1 0
Wahluke Meeting House
 72 1 0
Road O Camp Housing
 99 0 0
White Sands Fwh
 107 0 0
Matson Mattawa Campus
 48 1 0
Zirkle Royal Slope Ranch #2
 96 0 0
Green Acres Mattawa
 267 0 0
Capstone Farmworker Housing
 96 1 0
Sam Farmworker Housing
 100 0 0
Zirkle Wahluke Ranch
 96 0 0
Lynx H2a Housing
 100 0 0
Royal Bluff Rco Fwh
 64 0 0
Frenchman Orchard Farmworker
 72 0 0
Royal Pacific Orchard
 84 0 0
Frog Ranch Farmworker Housing
 100 0 0
Jackrabbit South
 54 0 0
Zirkle Mattawa Ranch
 99 0 0
Chukar Farmworker Housing
 100 0 0
Grouse Farmworker Housing
 100 0 0
Fox Orchard Farmworker Housing
 100 0 0
Zirkle-Chief Mattawa Ranch
 25 0 0
High Line Housing
 96 0 0
Port of Royal Slope
 447 0 0
Yanoff Ranch
 82 0 0
Valley Fruit Orchards LLC
 72 0 0
Zirkle Yanoff Ranch #2
 96 0 0
King Fuji Ranch Housing No. 2
 96 0 0
AC Management Fwh
 86 0 0
Valley Fruit Hilltop
 108 2 0
King Fuji Ranch Housing
 71 0 0
Royal Bluffs Ranch
 11 0 0
Rexius Farms Housing U104 B86
 32 0 0
Kds Orchards Farmworker Housing
 64 1 0
R-12 Temporary Worker Housing
 51 0 0
Frenchman Hills Dodson
 99 1 0
Escure Farms
 26 0 0
Wild Horse Campground System 1
 31 0 0
Sweet Note Farmworker Housing
 99 0 0
Jack Rabbit Water System
 98 1 0
All non-community systems
About this data

Water systems are matched to Grant County, nearest to Schwana 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.