Lead and copper

MS0260010 , Holmes JR College

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 Holmes JR College, 38 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, 2025 – Dec 31, 2025	10	0.192 mg/l	DS000	Accepted
Lead	Jan 1, 2025 – Dec 31, 2025	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2024 – Dec 31, 2024	10	0.0908 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2024	10	0.007 mg/l	DS000	Accepted
Copper	Jan 1, 2023 – Dec 31, 2023	10	0.107 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2023	10	0.00209 mg/l	DS000	Accepted
Copper	Jan 1, 2022 – Dec 31, 2022	10	0.0868 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2022	10	0.0031 mg/l	DS000	Accepted
Copper	Jul 1, 2021 – Dec 31, 2021	20	0.229 mg/l	DS000	Accepted
Lead	Jul 1, 2021 – Dec 31, 2021	20	0.0035 mg/l	DS000	Accepted
Copper	Jan 1, 2021 – Jun 30, 2021	20	0.376 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Jun 30, 2021	20	0.0064 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.3273 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.02 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	11	0.5169 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	11	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	11	0.5169 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	11	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	10	0.2938 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	10	0.0024 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.2938 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0024 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	12	0.2151 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	12	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	12	0.2151 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	12	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.4686 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0036 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.09 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.192 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.003 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	0.01 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	21	0.258 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	21	0.012 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.