Lead and copper

MS0160010 , Willow Grove Water Assn

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 Willow Grove Water Assn, 44 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	10	0.274 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	10	0.0028 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	10	0.482 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	10	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2018	10	0.3896 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2018	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2017	10	0.1418 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2017	10	0.0034 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2016	10	0.1276 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2016	10	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Jun 30, 2015	20	0.2891 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Jun 30, 2015	20	0.0034 mg/l	DS000	Accepted
Copper	Jul 1, 2014 – Dec 31, 2014	20	0.3008 mg/l	DS000	Accepted
Lead	Jul 1, 2014 – Dec 31, 2014	20	0.0029 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Jun 30, 2014	20	0.1496 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Jun 30, 2014	20	0.0014 mg/l	DS000	Accepted
Copper	Jul 1, 2013 – Dec 31, 2013	20	0.3292 mg/l	DS000	Accepted
Lead	Jul 1, 2013 – Dec 31, 2013	20	0.0061 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Jun 30, 2013	20	0.0783 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Jun 30, 2013	20	0.0016 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Dec 31, 2012	12	0.5666 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Dec 31, 2012	12	0.0171 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2009	10	0.5169 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2009	10	0.0117 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2008	10	0.2121 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2008	10	0.0054 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Dec 31, 2007	10	0.0298 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Dec 31, 2007	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2004 – Dec 31, 2004	10	0.0648 mg/l	DS000	Accepted
Lead	Jan 1, 2004 – Dec 31, 2004	10	0.0078 mg/l	DS000	Accepted
Copper	Jan 1, 2001 – Dec 31, 2001	10	0.002 mg/l	DS000	Accepted
Lead	Jan 1, 2001 – Dec 31, 2001	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2000	10	0.006 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2000	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Jun 30, 1995	20	0.338 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Jun 30, 1995	20	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1994 – Dec 31, 1994	20	0.76 mg/l	DS000	Accepted
Lead	Jul 1, 1994 – Dec 31, 1994	20	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	2.443 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.002 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.255 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	0.002 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.