Lead and copper

MS0370011 , West Lamar Water Assn #1

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 West Lamar Water Assn #1, 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	0.105 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	30	0.0017 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	30	0.12 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	30	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	30	0.2333 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	30	0.0025 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	30	0.1627 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	30	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	30	0.0917 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	30	0.0011 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	30	0.1419 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	30	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	30	0.1867 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	30	0.0041 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	30	0.1182 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	30	0.0025 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	20	0.133 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	20	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	20	0.082 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	20	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	20	0.208 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	20	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	20	0.203 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	20	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1993 – Jun 30, 1993	40	0.631 mg/l	DS000	Accepted
Lead	Jan 1, 1993 – Jun 30, 1993	40	0.007 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	80	0.06 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	80	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.