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MCHENRY UTILITY ASSN, INC

Mississippi — Community Water System — PWSID: MS0660002

System Information

PWSIDMS0660002
System NameMCHENRY UTILITY ASSN, INC
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeMixed
EPA Region04
Serves SchoolNo
WholesalerNo
First ReportedFeb 28, 1979
Last ReportedDec 31, 2025

Location & Contact

StateMississippi
CityMCHENRY
ZIP Code39561
Address35 WATKINS AVE
OrganizationBLACKWELL, MARK
Phone—

Population & Service

Population Served1,653
Service Connections627

Drinking Water Violations (215)

This water system has 215 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
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2022 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 Sep 30, 2012 Radium-226 MR No Yes — — — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-228 MR No Yes — — — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-228 MR No Yes — — — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-226 MR No Yes — — — Resolved Sep 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Radium-228 MR No Yes — — — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Radium-228 MR No Yes — — — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Radium-226 MR No Yes — — — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Radium-226 MR No Yes — — — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Radium-226 MR No Yes — — — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Radium-226 MR No Yes — — — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Radium-228 MR No Yes — — — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Radium-228 MR No Yes — — — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-226 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-226 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-226 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-228 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Oct 1, 2011 Dec 31, 2011 Radium-226 MR No Yes — — — Resolved Dec 31, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-226 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-228 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-226 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-226 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-228 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-228 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-228 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Jul 1, 2011 Sep 30, 2011 Radium-226 MR No Yes — — — Resolved Sep 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-226 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-226 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-228 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-228 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-226 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-226 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-228 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Combined Uranium MR No Yes — 30 ug/L — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Apr 1, 2011 Jun 30, 2011 Radium-228 MR No Yes — — — Resolved Jun 30, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Mar 31, 2011 Radium-228 MR No Yes — — — Resolved Mar 31, 2011 Radionuclides and Revised Rad Rule
Jan 1, 2011 Mar 31, 2011 Radium-228 MR No Yes — — — Resolved Mar 31, 2011 Radionuclides and Revised Rad 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.

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