Lead and copper

MS0250023 , South Terry Water Assn

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 South Terry Water Assn, 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, 2022 – Dec 31, 2024	10	0.14 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	10	0.0371 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	10	0.0023 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.0159 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	4	0.0935 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	4	0.0016 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.1577 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0036 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.2836 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	11	0.2923 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	11	0.0017 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	5	0.464 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	5	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	5	0.217 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	5	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	5	0.216 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	5	0.007 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	10	0.242 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	10	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	10	0.352 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	10	0.004 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.