Lead and copper

MS0340003 , City of Ellisville

Every monitoring period on record is listed here. This page applies no date range. The same list limited to the last two years.

Lead and copper 90th-percentile sample summaries for City of Ellisville, 26 summaries, every one on record. The agency records no date of receipt for any of them.
Analyte	Monitoring period	Samples	90th percentile	Facility	Data quality
Copper	Jan 1, 2022 – Dec 31, 2024	20	0.187 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	20	0.0082 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	20	0.249 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	20	0.0041 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	20	0.2226 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	20	0.0035 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	20	0.1604 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	20	0.0057 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	21	0.2122 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	21	0.0093 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	20	0.28 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	20	0.0061 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	19	0.1392 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	19	0.0111 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	19	0.192 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	19	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	20	0.452 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	20	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	20	0.189 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	20	0.007 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	20	0.322 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	20	0.008 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	40	0.31 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	40	0.008 mg/l	DS000	Accepted
Copper	Jan 1, 1992 – Jun 30, 1992	40	0.2 mg/l	DS000	Accepted
Lead	Jan 1, 1992 – Jun 30, 1992	40	0.006 mg/l	DS000	Accepted

No date of receipt is recorded for any of these summaries.

This system’s violations

What the 90th percentile is

The 90th percentile of all samples collected from the distribution system is the standard that the US Environmental Protection Agency has chosen for determining compliance with the Lead and Copper Action Level under the federal Lead and Copper Rule. The 90th percentile is determined by ranking all sample results from lowest to highest and finding a result that is 90% of the number of sample results from the top. For example, if there are 10 sample results, the 90th percentile would be the 9th sample result from the top.

From the help text published with these pages.