Lead and copper

MS0070004 , City of Calhoun City

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 City of Calhoun City, 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, 2023 – Dec 31, 2025	10	0.163 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2025	10	0.0016 mg/l	DS000	Accepted
Copper	Jan 1, 2020 – Dec 31, 2022	10	0.468 mg/l	DS000	Accepted
Lead	Jan 1, 2020 – Dec 31, 2022	10	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	10	0.5406 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	10	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	10	0.6752 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	10	0.0037 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	11	0.381 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	11	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.2973 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.1862 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0019 mg/l	DS000	Accepted
Copper	Jan 1, 2003 – Dec 31, 2005	10	0.1823 mg/l	DS000	Accepted
Lead	Jan 1, 2003 – Dec 31, 2005	10	0.0029 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.194 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1999	10	0.247 mg/l	DS000	Accepted
Lead	Jan 1, 1997 – Dec 31, 1999	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.19 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.008 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.414 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.014 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.285 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.014 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.276 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	0.015 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.