Lead and copper

MS0720024 , Tunica County Utility District

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 Tunica County Utility District, 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, 2023 – Dec 31, 2025	20	0.099 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2025	20	0.000787 mg/l	DS000	Accepted
Copper	Jan 1, 2020 – Dec 31, 2022	20	0.103 mg/l	DS000	Accepted
Lead	Jan 1, 2020 – Dec 31, 2022	20	0 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	20	0.0896 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	20	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	20	0.0602 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	20	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	20	0.0881 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	20	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	20	0.1933 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	20	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	30	0.0859 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	30	0 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	30	0.1005 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	30	0.0022 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	20	0.119 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1998 – Dec 31, 1998	20	0.353 mg/l	DS000	Accepted
Lead	Jan 1, 1998 – Dec 31, 1998	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1997	20	0.434 mg/l	DS000	Accepted
Lead	Jan 1, 1997 – Dec 31, 1997	20	0.001 mg/l	DS000	Accepted
Copper	Jul 1, 1995 – Dec 31, 1995	40	0.225 mg/l	DS000	Accepted
Lead	Jul 1, 1995 – Dec 31, 1995	40	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Jun 30, 1995	40	0.096 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Jun 30, 1995	40	0.001 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.