PlainEnviro

TERRE DU LAC

PWSID: MO4036059 · Des Peres, MO · Serves 3,200 people

Health Violations

TERRE DU LAC has 162 health-based violations out of 162 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
3,200
Total Violations
162
Health Violations
162
Source Type
Groundwater

TERRE DU LAC (PWSID MO4036059) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 3,200 people in Des Peres, MO, and is subject to primacy enforcement by the Missouri drinking-water program.

The system's federal compliance record contains 162 total violations, with 162 classified as health-based (MCL exceedances or treatment-technique failures). 2 distinct contaminants have been cited, including Lead & Copper Rule, Copper. Recorded violations span 1980–2016.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Missouri state drinking-water program's public portal.

System Details

EPA ID (PWSID)
MO4036059
System Type
CWS
Water Source
Groundwater
Location
Des Peres, MO
Population Served
3,200
Health Violations
Yes (162)

What contaminants are in this water system?

Contaminant Violations Health-Based
Lead & Copper Rule 92 92
Copper 70 70

Violation History (162)

Contaminant Health Date
Lead & Copper Rule Yes Jan 1, 2016
Lead & Copper Rule Yes Jan 1, 2016
Lead & Copper Rule Yes Oct 1, 2015
Lead & Copper Rule Yes Oct 1, 2015
Lead & Copper Rule Yes Jul 1, 2015
Lead & Copper Rule Yes Jul 1, 2015
Lead & Copper Rule Yes Apr 1, 2015
Lead & Copper Rule Yes Apr 1, 2015
Lead & Copper Rule Yes Jan 1, 2015
Lead & Copper Rule Yes Jan 1, 2015
Copper Yes Apr 1, 2012
Copper Yes Apr 1, 2012
Lead & Copper Rule Yes Apr 1, 2012
Lead & Copper Rule Yes Apr 1, 2012
Lead & Copper Rule Yes Jan 1, 2012
Lead & Copper Rule Yes Jan 1, 2012
Copper Yes Oct 1, 2011
Copper Yes Oct 1, 2011
Lead & Copper Rule Yes Oct 1, 2011
Lead & Copper Rule Yes Oct 1, 2011
Copper Yes Jul 1, 2011
Copper Yes Jul 1, 2011
Lead & Copper Rule Yes Jul 1, 2011
Lead & Copper Rule Yes Jul 1, 2011
Copper Yes Apr 1, 2011
Copper Yes Apr 1, 2011
Lead & Copper Rule Yes Apr 1, 2011
Lead & Copper Rule Yes Apr 1, 2011
Copper Yes Jan 1, 2011
Copper Yes Jan 1, 2011
Lead & Copper Rule Yes Jan 1, 2011
Lead & Copper Rule Yes Jan 1, 2011
Copper Yes Jul 1, 2010
Copper Yes Jul 1, 2010
Lead & Copper Rule Yes Jul 1, 2010
Lead & Copper Rule Yes Jul 1, 2010
Copper Yes Apr 1, 2010
Copper Yes Apr 1, 2010
Lead & Copper Rule Yes Apr 1, 2010
Lead & Copper Rule Yes Apr 1, 2010
Copper Yes Jan 1, 2010
Copper Yes Jan 1, 2010
Lead & Copper Rule Yes Jan 1, 2010
Lead & Copper Rule Yes Jan 1, 2010
Copper Yes Oct 1, 2009
Copper Yes Oct 1, 2009
Lead & Copper Rule Yes Oct 1, 2009
Lead & Copper Rule Yes Oct 1, 2009
Copper Yes Jul 1, 2009
Copper Yes Jul 1, 2009
Lead & Copper Rule Yes Jul 1, 2009
Lead & Copper Rule Yes Jul 1, 2009
Copper Yes Apr 1, 2009
Copper Yes Apr 1, 2009
Lead & Copper Rule Yes Apr 1, 2009
Lead & Copper Rule Yes Apr 1, 2009
Copper Yes Jan 1, 2009
Copper Yes Jan 1, 2009
Lead & Copper Rule Yes Jan 1, 2009
Lead & Copper Rule Yes Jan 1, 2009
Copper Yes Oct 1, 2008
Copper Yes Oct 1, 2008
Lead & Copper Rule Yes Oct 1, 2008
Lead & Copper Rule Yes Oct 1, 2008
Lead & Copper Rule Yes Jul 1, 2008
Lead & Copper Rule Yes Jul 1, 2008
Copper Yes Jul 1, 2008
Copper Yes Jul 1, 2008
Copper Yes Apr 1, 2008
Copper Yes Apr 1, 2008
Lead & Copper Rule Yes Apr 1, 2008
Lead & Copper Rule Yes Apr 1, 2008
Copper Yes Jan 1, 2008
Copper Yes Jan 1, 2008
Lead & Copper Rule Yes Jan 1, 2008
Lead & Copper Rule Yes Jan 1, 2008
Copper Yes Oct 1, 2007
Copper Yes Oct 1, 2007
Lead & Copper Rule Yes Oct 1, 2007
Lead & Copper Rule Yes Oct 1, 2007
Copper Yes Jul 1, 2007
Copper Yes Jul 1, 2007
Lead & Copper Rule Yes Jul 1, 2007
Lead & Copper Rule Yes Jul 1, 2007
Copper Yes Apr 1, 2007
Copper Yes Apr 1, 2007
Lead & Copper Rule Yes Apr 1, 2007
Lead & Copper Rule Yes Apr 1, 2007
Copper Yes Jan 1, 2007
Copper Yes Jan 1, 2007
Lead & Copper Rule Yes Jan 1, 2007
Lead & Copper Rule Yes Jan 1, 2007
Copper Yes Oct 1, 2006
Copper Yes Oct 1, 2006
Lead & Copper Rule Yes Oct 1, 2006
Lead & Copper Rule Yes Oct 1, 2006
Lead & Copper Rule Yes Jul 1, 2006
Lead & Copper Rule Yes Jul 1, 2006
Copper Yes Jul 1, 2006
Copper Yes Jul 1, 2006
Showing 100 of 162 violations.

Frequently Asked Questions

Is TERRE DU LAC water safe to drink?
TERRE DU LAC has 162 health-based violations out of 162 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses groundwater water as its source.
How many people does TERRE DU LAC serve?
TERRE DU LAC serves 3,200 people in Des Peres, MO. It is classified as a CWS water system.
What violations does TERRE DU LAC have?
TERRE DU LAC has 162 total violations on record spanning 1980–2016. 162 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in TERRE DU LAC water?
Violations have been recorded for 2 contaminants. The most frequent: Lead & Copper Rule, Copper.

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Explore More

Missouri Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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