Lead and copper

MS0140002 , Clarksdale Public Utilities

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 Clarksdale Public Utilities, 28 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	29	0.153 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	29	0.0022 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	30	0.532 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	30	0.0039 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	30	0.6818 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	30	0.0089 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	30	0.3047 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	30	0.0049 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	30	0.3865 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	30	0.0087 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	30	0.2714 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	30	0.0057 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	30	0.9657 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	30	0.0047 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	31	0.8157 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	31	0.0071 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	30	0.961 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	30	0.008 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	30	1.05 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	30	0.008 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	30	0.783 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	30	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	30	0.334 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	30	0.009 mg/l	DS000	Accepted
Copper	Jan 1, 1993 – Jun 30, 1993	60	0.86 mg/l	DS000	Accepted
Lead	Jan 1, 1993 – Jun 30, 1993	60	0.007 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	61	0.73 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	61	0.005 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.