Tapcensus

Water quality for ZIP code 94571

ZIP 94571 covers Rio Vista in Solano County, California, one of 15 ZIP codes in the county. 64 active public water systems serve the county; 12 had an EPA violation in the past three years.

Most likely your provider

City of Rio Vista CA4810004 · Community water system · Ground water · Rio Vista
Serves 11,206 people Rules violated, past 3 years 1 Unresolved 1 Last sanitary survey May 29, 2025 Distance 2.7 mi
View system details EPA facility report

Other community water systems in Solano County

25 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Snug Harbor RV LP
 24 0 7.5 mi
Delta Conservation Camp
 65 0 7.6 mi
Collinsville Water Works
 25 1 7.9 mi
California Water Service Co.-Travis Afb
 18,111 0 13.7 mi
Suisun-Solano Water Authority
 29,105 2 16.2 mi
Sid Elmira
 290 0 16.6 mi
Sid Peabody
 56 0 16.6 mi
California State Prison Solano
 3,882 0 17.5 mi
City of Fairfield
Fairfield		 120,720 1 18.7 mi
City of Vacaville
Vacaville		 99,650 0 19.2 mi
Vaca Villa Apartments
 60 0 19.6 mi
Sid Blue Ridge Oaks
 63 1 20.0 mi
California Water Service Co. Dixon
 10,623 0 21.1 mi
Hidden Acres Trailer Villa
 80 1 21.2 mi
Vineyard RV Park
 550 0 21.5 mi
City of Dixon
 12,540 0 21.6 mi
Sid Gibson Canyon
 535 2 22.1 mi
City of Benicia
Benicia		 27,131 0 23.2 mi
Travis Afb Wtp Vallejo
 3 0 23.2 mi
Cresta Mesa Parque
 25 0 23.3 mi
Rural North Vacaville Water District
 1,313 0 23.9 mi
Sid Pleasant Hills Ranch
 89 1 24.3 mi
City of Vallejo-Lakes System
Vallejo		 2,800 0 27.1 mi
City of Vallejo
Vallejo		 121,420 0 27.1 mi
Sid Quail Canyon
 132 0 28.5 mi
Non-community systems in Solano County (38: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Birds Landing Hunting Preserve
 100 0 0
EB Stone
 42 0 0
Western Railway Museum
 50 0 0
Hastings Island Hunting Preserve
 100 0 0
Rockwell Collins Inc. (fka Upco-Utas)
 510 1 1
Rush Ranch Open Space
 656 0 0
Dixon Migrant Center
 346 1 1
Valley Evangelical Free Church
 1,200 0 0
Midway Stars 76 Gas Station & Food Mart
Vacaville 		111 0 0
Sievers Water Works
Vacaville 		110 0 0
Easterly Wwtp Vacaville
Vacaville 		70 0 0
Superior Packing CO
 156 0 0
Neil's Service Center
 170 0 0
Connection Point Church
Vacaville 		202 0 0
Vaca-Dixon Substation
 40 0 0
Stocking Ranch Deepwell
 53 0 0
Caymus Cordelia Winery
Fairfield 		75 0 0
Moose Lodge 1967
 159 0 0
Mariani Packing Company, Inc.
 320 0 0
Punjabi Dhaba
 155 0 0
Northbay Logistics Center Fka Savemart
 180 0 0
Midway RV Park
 48 0 0
Self-Serve Petroleum
 1,210 0 0
Midway Foods
 100 0 0
West Wind Winery
 103 0 0
Campbell Soup Dixon
 25 0 0
Blue Victorian Winery
 100 0 0
Pedrick Produce
 120 1 0
Gill Sidhu Chevron
 255 0 0
Dixon 76
 149 0 0
Hines Nursery Winters South
 100 0 0
Gotham Greens
Davis 		60 0 0
Hines Nurseries Winters North
 150 2 1
Lake Solano Park
 1,019 0 0
Neil's Service Center II
 55 0 0
Hunter Hill Safety Roadside Rest Area
 3,707 0 0
Wooden Valley Winery
 250 0 0
Harris Moran Seed Company
 64 0 0
About this data

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

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 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.