Lead and copper

MS0550005 , Pearl River Central W/A

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 Pearl River Central W/A, 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	30	0.0581 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	30	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	30	0.0709 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	30	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	30	0.0661 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	30	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	30	0.0548 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	30	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	36	0.064 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	36	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	30	0.0686 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	30	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	20	0.0355 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	20	0.0021 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	20	0.0511 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	20	0.0011 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	20	0.031 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	19	0.064 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	19	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	20	0 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	20	0 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1993 – Jun 30, 1993	40	0.059 mg/l	DS000	Accepted
Lead	Jan 1, 1993 – Jun 30, 1993	40	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	40	0.07 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	40	0.003 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.