Lead and copper

MS0240263 , West Harrison High School

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 West Harrison High School, 16 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	10	0.0495 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	10	0.143 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	11	0.2405 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	11	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Dec 31, 2015	10	0.1968 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Dec 31, 2015	10	0.0017 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2012	10	0.0888 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2012	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2011	12	0.006 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2011	12	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Jun 30, 2010	21	0.2372 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Jun 30, 2010	21	0.0026 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	20	0.2574 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	20	0.0032 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.