Lead and copper

MS0530009 , Longview Water Association

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 Longview Water Association, 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, 2018 – Dec 31, 2020	10	0.0461 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	10	0.0711 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	10	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.4763 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0037 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.0948 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0034 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2008	10	0.0283 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2008	10	0.0069 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Dec 31, 2007	10	0.0841 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Dec 31, 2007	10	0.0045 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2006	10	0.0672 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2006	10	0.0041 mg/l	DS000	Accepted
Copper	Jan 1, 2004 – Dec 31, 2004	10	0.162 mg/l	DS000	Accepted
Lead	Jan 1, 2004 – Dec 31, 2004	10	0.0016 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2000	5	0.073 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2000	5	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.071 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Jun 30, 1995	10	0.054 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Jun 30, 1995	10	0.003 mg/l	DS000	Accepted
Copper	Jul 1, 1994 – Dec 31, 1994	10	0.053 mg/l	DS000	Accepted
Lead	Jul 1, 1994 – Dec 31, 1994	10	0.015 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.194 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.072 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	10	0.15 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	10	0.013 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.