CITY OF RIO VISTA

California — Community Water System — PWSID: CA4810004

System Information

PWSIDCA4810004
System NameCITY OF RIO VISTA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedNov 17, 2025

Location & Contact

StateCalifornia
CityRIO VISTA
ZIP Code94571-1842
Address1 MAIN ST
OrganizationMALCOLM, GREG
Phone707-374-6451

Population & Service

Population Served10,489
Service Connections5,646

Drinking Water Violations (11)

This water system has 11 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2000 Jul 31, 2000 Benzene MR No No 0.005 mg/L Resolved Jul 31, 2000 Volatile Organic Chemicals
Jul 1, 2000 Jul 31, 2000 Benzene MR No No 0.005 mg/L Resolved Jul 31, 2000 Volatile Organic Chemicals
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MCL Yes No 5% of samples Resolved Jan 31, 1995 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MCL Yes No 5% of samples Resolved Jan 31, 1995 Total Coliform Rule
Oct 1, 1994 Oct 31, 1994 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 1994 Total Coliform Rule
Oct 1, 1994 Oct 31, 1994 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 1994 Total Coliform Rule
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 1994 Total Coliform Rule
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 1994 Total Coliform Rule
Jun 1, 1994 Jun 30, 1994 Coliform (TCR) MCL Yes No 5% of samples Resolved Jun 30, 1994 Total Coliform Rule
Jul 29, 1990 Mar 13, 1993 Arsenic MR No No 0.010 mg/L Resolved Mar 13, 1993 Arsenic Rule
Jul 29, 1990 Mar 13, 1993 Arsenic MR No No 0.010 mg/L Resolved Mar 13, 1993 Arsenic Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

Browse All Water Systems Water Systems in California