Lead and copper

MS0480019 , Cason 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 Cason Water Association, 34 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	Jul 1, 2024 – Dec 31, 2024	40	0.0748 mg/l	DS000	Accepted
Lead	Jul 1, 2024 – Dec 31, 2024	40	0 mg/l	DS000	Accepted
Copper	Jan 1, 2024 – Jun 30, 2024	40	0.0288 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Jun 30, 2024	40	0.0005 mg/l	DS000	Accepted
Copper	Jul 1, 2023 – Dec 31, 2023	40	0.0262 mg/l	DS000	Accepted
Lead	Jul 1, 2023 – Dec 31, 2023	40	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2023 – Jun 30, 2023	40	0.0357 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Jun 30, 2023	40	0.0007 mg/l	DS000	Accepted
Copper	Jul 1, 2022 – Dec 31, 2022	40	0.0676 mg/l	DS000	Accepted
Lead	Jul 1, 2022 – Dec 31, 2022	40	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	20	0.114 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	20	0.0011 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	20	0.1798 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	20	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	20	0.1798 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	20	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	20	0.1364 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	20	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	20	0.2618 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	20	0.0033 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	20	0.2934 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	20	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	20	0.2345 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	20	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.386 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.438 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.479 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.001 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.084 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.