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TERRE DU LAC

Missouri — Community Water System — PWSID: MO4036059

System Information

PWSIDMO4036059
System NameTERRE DU LAC
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedMar 7, 1980
Last ReportedDec 31, 2025

Location & Contact

StateMissouri
CityDES PERES
ZIP Code63131-0000
Address1630 DES PERES RD STE 140
OrganizationSASSEN, ISABEL
Phone314-464-3964

Population & Service

Population Served3,200
Service Connections1,351

Drinking Water Violations (444)

This water system has 444 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, 2020 — Consumer Confidence Rule Other No No — — — Resolved Nov 9, 2020 Consumer Confidence Rule
Mar 5, 2017 — Public Notice Other No No — — — Resolved Aug 22, 2017 Public Notice Rule and Revised PN Rule
Dec 7, 2016 — Public Notice Other No No — — — Resolved Aug 22, 2017 Public Notice Rule and Revised PN Rule
Mar 13, 2016 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Mar 13, 2016 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Mar 3, 2016 — Groundwater Rule Other No No — — — Resolved Jan 6, 2017 Ground Water Rule
Mar 3, 2016 — Groundwater Rule Other No No — — — Resolved Jan 6, 2017 Ground Water Rule
Mar 3, 2016 — Groundwater Rule Other No No — — — Resolved Jan 6, 2017 Ground Water Rule
Jan 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 10.4 PCI/L 5 pCi/L 5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Jan 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 10.4 PCI/L 5 pCi/L 5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Jan 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 10.4 PCI/L 5 pCi/L 5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Jan 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MCL Yes No 10.4 PCI/L 5 pCi/L 5 Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2015 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.88 PCI/L 5 pCi/L 5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2015 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.88 PCI/L 5 pCi/L 5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2015 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.88 PCI/L 5 pCi/L 5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Oct 1, 2015 Sep 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.88 PCI/L 5 pCi/L 5 Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2015 Jun 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.43 PCI/L 5 pCi/L 5 Resolved Jun 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2015 Jun 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.43 PCI/L 5 pCi/L 5 Resolved Jun 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2015 Jun 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.43 PCI/L 5 pCi/L 5 Resolved Jun 30, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2015 Jun 30, 2016 Combined Radium (-226 and -228) MCL Yes No 8.43 PCI/L 5 pCi/L 5 Resolved Jun 30, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2015 Mar 31, 2016 Combined Radium (-226 and -228) MCL Yes No 8.05 PCI/L 5 pCi/L 5 Resolved Mar 31, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2015 Mar 31, 2016 Combined Radium (-226 and -228) MCL Yes No 8.05 PCI/L 5 pCi/L 5 Resolved Mar 31, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2015 Mar 31, 2016 Combined Radium (-226 and -228) MCL Yes No 8.05 PCI/L 5 pCi/L 5 Resolved Mar 31, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2015 Mar 31, 2016 Combined Radium (-226 and -228) MCL Yes No 8.05 PCI/L 5 pCi/L 5 Resolved Mar 31, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2015 Mar 31, 2016 Combined Radium (-226 and -228) MCL Yes No 8.05 PCI/L 5 pCi/L 5 Resolved Mar 31, 2016 Radionuclides and Revised Rad Rule
Jan 1, 2015 Dec 31, 2015 Combined Radium (-226 and -228) MCL Yes No 6.2 PCI/L 5 pCi/L 5 Resolved Dec 31, 2015 Radionuclides and Revised Rad Rule
Jan 1, 2015 Dec 31, 2015 Combined Radium (-226 and -228) MCL Yes No 6.2 PCI/L 5 pCi/L 5 Resolved Dec 31, 2015 Radionuclides and Revised Rad Rule
Jan 1, 2015 Dec 31, 2015 Combined Radium (-226 and -228) MCL Yes No 6.2 PCI/L 5 pCi/L 5 Resolved Dec 31, 2015 Radionuclides and Revised Rad Rule
Jan 1, 2015 Dec 31, 2015 Combined Radium (-226 and -228) MCL Yes No 6.2 PCI/L 5 pCi/L 5 Resolved Dec 31, 2015 Radionuclides and Revised Rad Rule
Jan 1, 2015 Dec 31, 2015 Combined Radium (-226 and -228) MCL Yes No 6.2 PCI/L 5 pCi/L 5 Resolved Dec 31, 2015 Radionuclides and Revised Rad Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Addressed — Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Addressed — Consumer Confidence Rule
Jun 11, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Jun 11, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Jun 11, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Jun 11, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
May 13, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
May 13, 2013 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Dec 13, 2012 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Dec 13, 2012 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Sep 10, 2012 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Sep 10, 2012 — Public Notice Other No No — — — Resolved Jun 27, 2016 Public Notice Rule and Revised PN Rule
Jul 1, 2012 Sep 30, 2012 Radium-226 MR No Yes — — — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MR No Yes — 30 ug/L — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Jul 1, 2012 Sep 30, 2012 Combined Uranium MR No Yes — 30 ug/L — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-228 MR No Yes — — — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-228 MR No Yes — — — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 Sep 30, 2012 Radium-226 MR No Yes — — — Archived Sep 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Mar 31, 2013 Gross Alpha, Excl. Radon and U MCL Yes No 18.93 PCI/L 15 pCi/L 15 Resolved Mar 31, 2013 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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