Lead and copper

MS0480013 , Wren 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 Wren W/A, 24 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, 2021 – Dec 31, 2023	20	0.236 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2023	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	20	0.2265 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	20	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	20	0.212 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	20	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	20	0.3036 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	20	0.0021 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.1778 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0019 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.1779 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0028 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.42 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1999	10	0.386 mg/l	DS000	Accepted
Lead	Jan 1, 1997 – Dec 31, 1999	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.323 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.316 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.406 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.354 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.