Lead and copper

MS0030005 , Mary Springs 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 Mary Springs 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	Jan 1, 2024 – Dec 31, 2026	10	1.06 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2026	10	0.0019 mg/l	DS000	Accepted
Copper	Jan 1, 2021 – Dec 31, 2023	10	0.829 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2023	10	0.0011 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.7983 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0026 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	10	0.5021 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	10	0.0044 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2016	10	0.5965 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2016	10	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2015	10	0.4454 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2015	10	0.0055 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2014	11	0.7456 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2014	11	0.0024 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Dec 31, 2013	10	0.7758 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Dec 31, 2013	10	0.0025 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2012	10	0.7673 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2012	10	0.0041 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Jun 30, 2011	20	0.565 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Jun 30, 2011	20	0.0045 mg/l	DS000	Accepted
Copper	Jul 1, 2010 – Dec 31, 2010	20	0.555 mg/l	DS000	Accepted
Lead	Jul 1, 2010 – Dec 31, 2010	20	0.0048 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.1849 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.009 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.002 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	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.066 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	21	0 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	21	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.