Lead and copper

MS0090007 , City of Okolona

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 Okolona, 36 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	0.0046 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2025	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2022 – Dec 31, 2022	10	0.0107 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2022	10	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	9	0.006 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	9	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	11	0.007 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	11	0 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Dec 31, 2015	12	0.0212 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Dec 31, 2015	12	0.0031 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2012	12	0.0375 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2012	12	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2011	10	0.0024 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2011	10	0 mg/l	DS000	Accepted
Copper	Jul 1, 2010 – Dec 31, 2010	20	0.0468 mg/l	DS000	Accepted
Lead	Jul 1, 2010 – Dec 31, 2010	20	0.0026 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Jun 30, 2010	20	0.0047 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Jun 30, 2010	20	0.0011 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	20	0.0144 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	20	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Jun 30, 2009	20	0.1687 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Jun 30, 2009	20	0.0353 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.0844 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0152 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.065 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	0.055 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	0.099 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	0.082 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.131 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.005 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.203 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	0.003 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.