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Product Safety9,700+ CPSC product recalls Food Safety28,600+ FDA food recalls Pet Safety1.3M FDA animal adverse events Drug Safety17,500+ FDA drug recalls Device Safety38,400+ FDA device recalls Workplace Safety102,900+ OSHA injury reports Brand HistoryRecall lookup by company

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SOUTH MESA WC

California — Community Water System — PWSID: CA3310017

System Information

PWSIDCA3310017
System NameSOUTH MESA WC
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedMar 22, 1979
Last ReportedMar 20, 2026

Location & Contact

StateCalifornia
CityCALIMESA
ZIP Code92320
AddressP.O. BOX 458
OrganizationARMSTRONG, DAVID
Phone909-795-2401

Population & Service

Population Served10,108
Service Connections3,108

Drinking Water Violations (14)

This water system has 14 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, 2014 Sep 30, 2014 MCL Yes No 2.1 MG/L 4.0 mg/L 2 Resolved Sep 30, 2014 —
Jul 1, 2014 Sep 30, 2014 MCL Yes No 2.1 MG/L 4.0 mg/L 2 Resolved Sep 30, 2014 —
Apr 1, 2014 Jun 30, 2014 MCL Yes No 2.1 MG/L 4.0 mg/L 2 Resolved Jun 30, 2014 —
Apr 1, 2014 Jun 30, 2014 MCL Yes No 2.1 MG/L 4.0 mg/L 2 Resolved Jun 30, 2014 —
Oct 1, 2013 — MR No No — TT — Resolved Oct 23, 2013 —
Oct 1, 2013 — MR No No — TT — Resolved Oct 23, 2013 —
Apr 1, 2010 Dec 31, 2010 MR No No — 4.0 mg/L — Resolved Dec 31, 2010 —
Apr 1, 2010 Dec 31, 2010 MR No No — 4.0 mg/L — Resolved Dec 31, 2010 —
Jan 1, 2009 Dec 31, 2009 MR No Yes — 0.060 mg/L — Resolved Dec 31, 2009 —
Jan 1, 2009 Dec 31, 2009 MR No Yes — 0.060 mg/L — Resolved Dec 31, 2009 —
Jan 1, 2009 Dec 31, 2009 MR No Yes — 0.080 mg/L — Resolved Dec 31, 2009 —
Jan 1, 2009 Dec 31, 2009 MR No Yes — 0.080 mg/L — Resolved Dec 31, 2009 —
Jun 30, 1993 Mar 1, 2000 MR No No — TT — Resolved Mar 1, 2000 —
Nov 1, 1989 Nov 30, 1989 Other No No — — — Archived Nov 30, 1989 —

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.

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