Lead and copper

MS0230063 , Standard Dedeaux Water Association

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 Standard Dedeaux Water Association, 20 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	20	0.118 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	20	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	20	0.119 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	20	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	20	0.1473 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	20	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Dec 31, 2015	21	0.0814 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Dec 31, 2015	21	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Dec 31, 2012	21	0.0589 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Dec 31, 2012	21	0.0011 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2009	10	0.1381 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2009	10	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2008	10	0.1336 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2008	10	0.0008 mg/l	DS000	Accepted
Copper	Jul 1, 2007 – Dec 31, 2007	21	0.1858 mg/l	DS000	Accepted
Lead	Jul 1, 2007 – Dec 31, 2007	21	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Jun 30, 2007	19	0.1935 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Jun 30, 2007	19	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Jun 30, 2005	20	0.41 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Jun 30, 2005	20	0.0018 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.