Lead and copper

MS0340019 , Southwest Jones W/A-North

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 Southwest Jones W/A-North, 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	20	0.237 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	20	0.0024 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	20	0.468 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	20	0.0055 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	20	0.3955 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	20	0.0031 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	21	0.3214 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	21	0.0038 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	20	0.2611 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	20	0.0054 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	20	0.274 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	20	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	23	0.3315 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	23	0.0035 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.674 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.593 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.007 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.182 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.338 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.003 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.279 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	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.