Tapcensus

Water quality in Yountville, California

Yountville is in Napa County. 188 active public water systems serve the county; 56 had an EPA violation in the past three years.

Most likely your provider

Veterans Home of California CA2810008 · Community water system · Surface water
Serves 1,000 people Rules violated, past 3 years 1 Unresolved 1 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 Napa County

27 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Town of Yountville
 2,785 0 0.2 mi
Mondavi Farm Worker Center
 66 0 1.7 mi
Hess Winery
 100 2 4.1 mi
Napa, City of
Napa		 84,804 0 7.1 mi
Circle Oaks Water District
 500 0 8.3 mi
River Ranch Farm Worker Center
 66 0 8.5 mi
R Ranch at the Lake
 20 2 8.7 mi
St. Helena, City of
St. Helena		 5,386 2 9.5 mi
Capell Valley Estates
 208 2 9.9 mi
Vailima Estates Mutual Water
 25 0 11.6 mi
Linda Vista Mutual Water CO
 90 0 11.8 mi
Napa River Ranch
 70 5 11.8 mi
Adventist Health St. Helena Hospital
 617 0 11.9 mi
Linda Falls Terrace Mutual
 35 0 12.1 mi
Spanish Flat Water District
 92 2 12.1 mi
LA Tierra Heights Mutual
 67 2 12.4 mi
Berryessa Highlands
 715 1 12.8 mi
Howell Mountain Mutual Water Company
 1,244 0 12.9 mi
Milton Road Water Company
 39 1 12.9 mi
Pacific Union College
 758 0 13.0 mi
Meyers Water Co.
 250 1 13.5 mi
Tucker Acres Mutual Water Co.
 200 1 14.2 mi
Calistoga Farm Worker Center
 67 0 14.7 mi
American Canyon, City of
American Canyon		 18,423 1 14.9 mi
Berryessa Pines Water System
 261 2 15.5 mi
All 28 community water systems in Napa County
Non-community systems in Napa County (160: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Domaine Carneros
 52 0 0
Dominus Estate Winery
 39 0 0
The Barrel Chai
 25 0 0
Bell Wine Cellars
Napa 		208 0 0
Pine Ridge Winery
 75 1 0
Gene Wines LLC
 38 0 0
Odette Estate Water System
 25 0 0
Piazza Winery
 99 0 0
Baldacci Family Vineyards
Napa 		85 0 0
Goosecross Cellars
 25 1 0
Silenus Vintners
 25 1 0
Stags Leap Winery
 50 0 0
Gamble Family Vineyards Winery
 40 0 0
Lewis Cellars
 293 0 0
Clos DU Val Wine Co.
 100 0 0
Cardinale Estate
 48 0 0
Stags Leap Wine Cellars
 44 0 0
Laird Family Estate
 55 2 1
Promontory Winery
 38 0 0
Silver Oak Wine Cellars
 167 1 1
Enchanted Hills
 146 0 0
Materra Winery
 49 0 0
Woolls Ranch Winery
 73 0 0
Opus One Winery
 100 0 0
Mayacamas Vineyards
 38 0 0
B Cellars Winery
 52 0 0
Ashes & Diamonds Winery
 25 0 0
Groth Vineyards & Winery
 65 0 0
Signorello Winery
 25 0 0
Darioush Winery
 40 1 1
Cakebread Cellar
 100 0 0
Rudd Wines, Inc., Dba Rudd
 100 0 0
Antinori California
Napa 		25 1 0
One Hope Winery
Napa 		85 0 0
Black Stallion Winery
 45 0 0
Sequoia Grove Vineyards
 25 1 1
Foley Johnson Winery
 37 0 0
Staglin Family Vineyard
 25 0 0
Miner Family Winery
 25 0 0
Soda Canyon Store
 50 1 0
St. Supery Winery
 40 0 0
Ovid Napa Valley
St. Helena 		35 0 0
Peju Province
 27 1 1
Nine Suns Winery
St. Helena 		25 0 0
Laird Wine Studio
 106 1 0
Burgess Cellars
 25 1 0
Z D Wines
 95 0 0
Caymus Vineyards
 42 1 0
Frogs Leap Winery
 25 0 0
Honig Winery
 38 0 0
All non-community systems
About this data

Water systems are matched to Napa County, nearest to Yountville 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

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.