Lead and copper

MS0220003 , City of Grenada

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 Grenada, 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	30	0.422 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	30	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	30	0.59 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	30	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	30	0.36 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	30	0.0031 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	30	0.5018 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	30	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	30	0.5054 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	30	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	30	0.6227 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	30	0.0016 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	30	0.8218 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	30	0.0023 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	30	0.5787 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	30	0.0019 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	28	0.729 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	28	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	29	0.851 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	29	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	30	0.79 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	30	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	30	0.879 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	30	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	61	0.78 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	61	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1992 – Jun 30, 1992	60	0.81 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.