Tapcensus

Water quality in Upper Lake, California

Upper Lake is in Lake County. 81 active public water systems serve the county; 17 had an EPA violation in the past three years.

Most likely your provider

Upper Lake County Water District CA1710009 · Community water system · Ground water
Serves 989 people Rules violated, past 3 years 0 Distance under 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 Lake County

42 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Cal 20 Village and Meadow Pointe Park
 255 0 0.3 mi
Nice Mutual Water Company
 2,929 0 3.9 mi
Lake County Csa 21 North Lakeport
 4,046 0 5.0 mi
Blue Lakes Village
 65 0 5.3 mi
Villa Blue Estates Water District
 60 1 5.3 mi
Blue Lakes Improvement Club
 90 1 5.4 mi
Blue Lakes Mobile Home Park
 31 1 5.7 mi
Lakeport, City of
Lakeport		 4,762 0 8.3 mi
Lucerne Water Co. Cal Water Service
 2,312 0 8.4 mi
Pier 1900 Homeowner's Association
 152 1 9.5 mi
Corinthian Bay Mutual Water Company
 75 0 10.0 mi
Lake County Csa 13 Kono Tayee
 449 0 11.3 mi
Lake County Csa 20 Soda Bay
 2,003 0 12.4 mi
Glenhaven Mutual Water Company
 300 0 13.2 mi
Buckingham Park Water District
 1,502 0 13.3 mi
Kelseyville CO Waterworks District 3
 4,102 0 13.9 mi
Windflower Point Mutual Water Company
 25 1 14.4 mi
Harbor View Mutual Water Company
 550 1 14.5 mi
Clear Water Mutual Water Company
 154 0 15.4 mi
Walnut Cove Mobile Estates
 200 0 15.7 mi
Konocti Shores
 30 0 15.7 mi
Clearlake Oaks County Water District
 2,359 1 15.8 mi
Bella Lago Mobile Home Park
 152 2 15.9 mi
Mt. Konocti Mutual Water Company
 4,360 0 17.5 mi
Lake County Csa 2 Spring Valley
 1,531 0 18.1 mi
All 43 community water systems in Lake County
Non-community systems in Lake County (38: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Three Brothers Travel Plaza
 25 0 0
Saratoga Springs Retreat Center
 208 0 0
Lodge at Blue Lakes
 100 0 0
Pine Acres Blue Lake Resort
 25 0 0
The Narrows Family Resort
 74 0 0
Usfs-Middle Creek CG
 40 0 0
LE Trianon Resort
 539 0 0
Lakeside County Park
 1,000 0 0
Wildwood
 50 0 0
Mendo Mill and Lumber Company
Lakeport 		45 0 0
Jitter Bean Coffee
Lakeport 		160 0 0
Wall Water
 40 0 0
Rotten Robbie
 992 0 0
Thomas Water System
Lakeport 		110 0 0
Jack in the Box Lakeport, CA
 25 0 0
Lakeport Cinemas
 400 0 0
Westgate Petroleum
Lakeport 		210 0 0
The Mercantile
 28 0 0
Sky Park Properties
 25 0 0
Brassfield Estate Winery
 54 0 0
Indian Beach Resort
 75 0 0
Konocti Harbor Resort
 505 1 0
Richmond Park Resort
 34 0 0
Reel in Resort
 200 0 0
Lake Pillsbury Resort & Marina INC
 150 0 0
Larsen's Office Complex
 112 0 0
Usfs-Sunset Point Campground
 110 0 0
Usfs Oak Flat Water System
 25 0 0
Jago Bay Mutual Water Company
 15 0 0
Cache Creek Vineyards
 310 0 0
Lake Pillsbury Ranch Water Company
 52 0 0
Northern California Vipassana Center
 80 0 0
Mandala Water System
 212 0 0
Harbin Hot Springs
 101 1 1
Hidden Valley Food Mart
 25 0 0
Langtry Farms
 41 0 0
Huttopia Six Sigma Campground
 330 0 0
Reynolds Water System
 100 0 0
About this data

Water systems are matched to Lake County, nearest to Upper 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 California 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.