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CITY OF BAY ST LOUIS

Mississippi — Community Water System — PWSID: MS0230001

System Information

PWSIDMS0230001
System NameCITY OF BAY ST LOUIS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region04
Serves SchoolNo
WholesalerNo
First ReportedFeb 28, 1979
Last ReportedDec 31, 2025

Location & Contact

StateMississippi
CityBAY ST LOUIS
ZIP Code39520
Address688 HWY 90
OrganizationFAVRE, MIKE
Phone228-467-5505

Population & Service

Population Served9,284
Service Connections3,847

Drinking Water Violations (723)

This water system has 723 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
Dec 7, 2024 — Public Notice Other No No — — — Resolved Dec 18, 2024 Public Notice Rule and Revised PN Rule
Dec 7, 2024 — Public Notice Other No No — — — Resolved Dec 18, 2024 Public Notice Rule and Revised PN Rule
Oct 1, 2024 Dec 31, 2024 TTHM MCL Yes No .083 MG/L 0.080 mg/L .08 Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 TTHM MCL Yes No .083 MG/L 0.080 mg/L .08 Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 TTHM MCL Yes No .083 MG/L 0.080 mg/L .08 Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 Dec 31, 2024 TTHM MCL Yes No .083 MG/L 0.080 mg/L .08 Resolved Dec 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MCL Yes No .085 MG/L 0.080 mg/L .08 Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
May 27, 2024 — Public Notice Other No No — — — Resolved May 31, 2024 Public Notice Rule and Revised PN Rule
May 27, 2024 — Public Notice Other No No — — — Resolved May 31, 2024 Public Notice Rule and Revised PN Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2024 Jun 30, 2024 TTHM MCL Yes No .082 MG/L 0.080 mg/L .08 Resolved Jun 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Sep 29, 2023 Consumer Confidence Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Sep 29, 2023 Consumer Confidence Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Sep 29, 2023 Consumer Confidence Rule
Jul 1, 2023 — Consumer Confidence Rule Other No No — — — Resolved Sep 29, 2023 Consumer Confidence Rule
Jun 4, 2023 — Public Notice Other No No — — — Resolved Jun 28, 2024 Public Notice Rule and Revised PN Rule
Jun 4, 2023 — Public Notice Other No No — — — Resolved Jun 28, 2024 Public Notice Rule and Revised PN Rule
Mar 10, 2023 — Public Notice Other No No — — — Resolved Apr 21, 2025 Public Notice Rule and Revised PN Rule
Mar 10, 2023 — Public Notice Other No No — — — Resolved Apr 21, 2025 Public Notice Rule and Revised PN Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Mar 31, 2023 TTHM MCL Yes No .084 MG/L 0.080 mg/L .08 Resolved Mar 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .089 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .089 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .089 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2022 Dec 31, 2022 TTHM MCL Yes No .089 MG/L 0.080 mg/L .08 Resolved Dec 31, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Chlorine MR No No — 4.0 mg/L — Resolved Dec 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Radium-228 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-226 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-226 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-226 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-228 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-226 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-228 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-228 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-226 MR No Yes — — — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Radium-228 MR No Yes — — — Resolved Dec 31, 2012 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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