Tapcensus

Water quality in Twisp, Washington

Twisp is in Okanogan County. 123 active public water systems serve the county; 46 had an EPA violation in the past three years.

Most likely your provider

Twisp Town of WA5390050 · Community water system · Ground water
Serves 1,173 people Rules violated, past 3 years 0 Last sanitary survey Oct 27, 2022 Distance 0.2 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 Okanogan County

42 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Pine Forest Water System
 90 0 7.8 mi
Winthrop Town of
 1,350 4 8.2 mi
Methow Water System INC
 45 0 11.3 mi
Edelweiss Maintenance Commission
 95 2 17.1 mi
Jaw Farms INC
 636 0 17.5 mi
Emanuel Heights Water System
 60 2 21.0 mi
M J Trailer Ranch
 100 0 21.4 mi
Johnson Creek Water Users Assn
 48 0 21.7 mi
Wolf Creek Property Owners Assn
 71 1 21.8 mi
Brewster City of
 3,843 1 23.6 mi
Brewster Flat Domestic Water Assn
 542 0 23.7 mi
Pateros Water Department
 1,149 1 24.0 mi
Alta Lake Golf Course Plat
 161 0 24.1 mi
Okanogan Water Department City of
 3,817 1 24.7 mi
Progressive Flat Water Assn
 335 0 24.9 mi
P and G Orchards Camp 2
 489 1 25.6 mi
Sandflat Water Association
 260 0 26.3 mi
Lost River Airport Association
 76 0 26.6 mi
Coleman Butte Water Assn
 250 0 27.1 mi
Duck Lake Water Association
 635 0 27.2 mi
Omak City of
 4,940 0 27.8 mi
Suncrest Plat Water System
 260 0 28.7 mi
Aston Estates
 141 0 29.0 mi
Riverside Town of
 429 5 29.6 mi
Vista Vue Water Users Assn
 60 0 29.6 mi
All 43 community water systems in Okanogan County
Non-community systems in Okanogan County (80: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Riverbend RV Park
 222 0 0
Ncsb
 71 1 0
Liberty Bell High School
 642 0 0
Twisp River Sky Ranch Water System
 21 0 0
Bear Creek Golf Course
 68 1 0
Winthrop KOA
 77 2 0
Rader Road HOA
 44 0 0
Pearrygin Lake State Park Both CG
 2,103 1 0
Loup Loup Ski Area
 350 1 0
Silverline Resort
 26 1 0
Sun Mountain Resort
 376 2 0
Wesola Polana
 31 1 0
Liberty Woodlands
 14 0 0
Wagon Wheel Bar & Grill
 26 1 0
Emerald City Green Machine
 155 0 0
Roadway Stores INC
 27 0 0
Shady Pines Resort
 62 0 0
Pasayten Peak
 129 1 0
Mazama Store
 109 1 0
Liars Cove
 73 1 0
Conconully SP Primitive Area
 129 0 0
Conconully City Well
 299 0 0
Poirier Orchard
 50 0 0
Jacks RV Park 1
 24 0 0
Lazy Daze Water Association
 21 0 0
Sit N Bull Saloon
 76 1 0
Red Rock Saloon
 100 0 0
Conconully Bible Camp
 71 1 0
Wilson Ranch PD Water System
 82 0 0
Early Winters Cabins
 17 0 0
Alamo Orchard CO Pateros
 48 2 0
Early Winters WC Methow RD
 54 1 0
Indian Camp Buckhorn MT Orchard
 43 0 0
Conconully SP Boat Launch
 258 0 0
Hardin Housing Water System
 83 0 0
Buckingham Water System
 64 2 1
Custom Orchard 1
 60 0 0
Country River Farm
 153 1 0
Alta Lake State Park
 1,071 0 0
Honeybear Growers
 161 0 0
P and G Orchards Camp 3
 152 0 0
Klipchuck CG Methow RD
 149 1 0
Our Lady of Valley Catholic Church
 60 2 0
Okanogan County Fair Water System
 867 2 0
Washington Pass Well Methow RD
 413 0 0
JN Camp Buckhorn MT Orchards
 41 1 0
Omak Omk City of
 31 0 0
Gamble Sands
 70 0 0
Keystone Ranch
 66 0 0
Bridgeport State Park
 441 0 0
All non-community systems
About this data

Water systems are matched to Okanogan County, nearest to Twisp 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.