Lead and copper

MS0470002 , City of Holly Springs

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 Holly Springs, 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	0.0192 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	30	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	30	0.596 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	30	0.0127 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	30	0.0384 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	30	0.0044 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	30	0.046 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	30	0.0101 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	32	0.0194 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	32	0.009 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	20	0.0218 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	20	0.0035 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	20	0.0318 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	20	0.0066 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	20	0.0815 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	20	0.0057 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	20	0.008 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	20	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	20	0 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	21	0.5 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	21	0.006 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	0.002 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	40	0 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	40	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1992 – Jun 30, 1992	40	0 mg/l	DS000	Accepted
Lead	Jan 1, 1992 – Jun 30, 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.