Lead and copper

MS0490023 , Hays Creek W/A-Minerva #2

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 Hays Creek W/A-Minerva #2, 22 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	0.0766 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	10	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	10	0.265 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	10	0.001 mg/l	DS000	Accepted
Copper	Jan 1, 2016 – Dec 31, 2018	10	0.249 mg/l	DS000	Accepted
Lead	Jan 1, 2016 – Dec 31, 2018	10	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	10	0.1207 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	10	0.0006 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	10	0.1517 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	10	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2010	10	0.1685 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2010	10	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Dec 31, 2007	10	0.3423 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Dec 31, 2007	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2006	10	0.4344 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2006	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Jun 30, 2005	20	0.1896 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Jun 30, 2005	20	0.0005 mg/l	DS000	Accepted
Copper	Jul 1, 2004 – Dec 31, 2004	20	0.4198 mg/l	DS000	Accepted
Lead	Jul 1, 2004 – Dec 31, 2004	20	0.0009 mg/l	DS000	Accepted
Copper	Jul 1, 2003 – Dec 31, 2003	20	0.297 mg/l	DS000	Accepted
Lead	Jul 1, 2003 – Dec 31, 2003	20	0.001 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.