Lead and copper

MS0470091 , H W Byers High School

1–50 of 60 monitoring periods, newest first. This page applies no date range. The same list limited to the last two years.

Lead and copper 90th-percentile sample summaries for H W Byers High School, 1 to 50 of 60 summaries shown. The agency records no date of receipt for any of them.
Analyte	Monitoring period	Samples	90th percentile	Facility	Data quality
Copper	Jan 1, 2020 – Dec 31, 2022	10	0.0087 mg/l	DS000	Accepted
Lead	Jan 1, 2020 – Dec 31, 2022	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.0087 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	10	0.0535 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	10	0.0033 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2016	10	0.0053 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2016	10	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2015	10	0.0067 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2015	10	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2014	10	0.0028 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2014	10	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Dec 31, 2013	10	1.5175 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Dec 31, 2013	10	0.0044 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2012	10	0.73 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2012	10	0.0051 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Jun 30, 2011	20	0.0016 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Jun 30, 2011	20	0 mg/l	DS000	Accepted
Copper	Jul 1, 2010 – Dec 31, 2010	20	0.02 mg/l	DS000	Accepted
Lead	Jul 1, 2010 – Dec 31, 2010	20	0 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Jun 30, 2010	18	0.8786 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Jun 30, 2010	18	0.0058 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	20	1.6163 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	20	0.0145 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Jun 30, 2009	20	5.1138 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Jun 30, 2009	20	0.0145 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2008	11	1.7221 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2008	11	0.0404 mg/l	DS000	Accepted
Copper	Jul 1, 2007 – Dec 31, 2007	20	0.4974 mg/l	DS000	Accepted
Lead	Jul 1, 2007 – Dec 31, 2007	20	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Jun 30, 2007	20	0.5838 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Jun 30, 2007	20	0.0045 mg/l	DS000	Accepted
Copper	Jan 1, 2004 – Jun 30, 2004	20	1.3364 mg/l	DS000	Accepted
Lead	Jan 1, 2004 – Jun 30, 2004	20	0.0058 mg/l	DS000	Accepted
Copper	Jul 1, 2003 – Dec 31, 2003	20	0.066 mg/l	DS000	Accepted
Lead	Jul 1, 2003 – Dec 31, 2003	20	0 mg/l	DS000	Accepted
Copper	Jan 1, 2003 – Jun 30, 2003	20	1.644 mg/l	DS000	Accepted
Lead	Jan 1, 2003 – Jun 30, 2003	20	0.013 mg/l	DS000	Accepted
Copper	Jul 1, 2002 – Dec 31, 2002	20	5.684 mg/l	DS000	Accepted
Lead	Jul 1, 2002 – Dec 31, 2002	20	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Jun 30, 2002	20	1.45 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Jun 30, 2002	20	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2001 – Jun 30, 2001	20	1.455 mg/l	DS000	Accepted
Lead	Jan 1, 2001 – Jun 30, 2001	20	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2000	20	2.846 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2000	20	0.009 mg/l	DS000	Accepted
Copper	Jul 1, 1996 – Dec 31, 1996	20	0.442 mg/l	DS000	Accepted
Lead	Jul 1, 1996 – Dec 31, 1996	20	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Jun 30, 1996	19	0.563 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Jun 30, 1996	19	0.003 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.