Lead and copper

MS0430002 , City of Brookhaven

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 Brookhaven, 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, 2022 – Dec 31, 2024	20	0.204 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	20	0.0027 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	20	0.083 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	20	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	22	0.1671 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	22	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	20	0.3157 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	20	0.0025 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	21	0.232 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	21	0.0034 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	21	0.4538 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	21	0.0034 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	20	0.1822 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	20	0.0023 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	30	0.2109 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	30	0.0028 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	30	0.332 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	30	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	30	0.18 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	30	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	30	0.148 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	30	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	30	0.206 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	30	0.002 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	60	0.13 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	60	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1992 – Jun 30, 1992	60	0.19 mg/l	DS000	Accepted
Lead	Jan 1, 1992 – Jun 30, 1992	60	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.