Lead and copper

MS0110002 , C S & I 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 C S & I Water Assn #1, 26 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	0.451 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2026	10	0.0028 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.4405 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0042 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	10	0.0917 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	10	0.0017 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.6415 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0033 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	10	0.0391 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	10	0.0036 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.0391 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0036 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.0119 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	0.025 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.008 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1999	10	0.309 mg/l	DS000	Accepted
Lead	Jan 1, 1997 – Dec 31, 1999	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.566 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	0.728 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	22	0.587 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	22	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	22	0.917 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	22	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.