Lead and copper

MS0770002 , Clara Water Association

51–88 of 88 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 Clara Water Association, 51 to 88 of 88 summaries shown. The agency records no date of receipt for any of them.
Analyte	Monitoring period	Samples	90th percentile	Facility	Data quality
Copper	Jul 1, 2013 – Dec 31, 2013	21	1.8911 mg/l	DS000	Accepted
Lead	Jul 1, 2013 – Dec 31, 2013	21	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 2013 – Jun 30, 2013	20	1.8571 mg/l	DS000	Accepted
Lead	Jan 1, 2013 – Jun 30, 2013	20	0.0055 mg/l	DS000	Accepted
Copper	Jul 1, 2012 – Dec 31, 2012	22	2.0159 mg/l	DS000	Accepted
Lead	Jul 1, 2012 – Dec 31, 2012	22	0.0102 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Jun 30, 2012	20	1.5736 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Jun 30, 2012	20	0.0036 mg/l	DS000	Accepted
Copper	Jul 1, 2011 – Dec 31, 2011	20	2.0344 mg/l	DS000	Accepted
Lead	Jul 1, 2011 – Dec 31, 2011	20	0.0038 mg/l	DS000	Accepted
Copper	Jul 1, 2010 – Dec 31, 2010	21	1.8034 mg/l	DS000	Accepted
Lead	Jul 1, 2010 – Dec 31, 2010	21	0.0058 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Jun 30, 2010	21	1.7146 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Jun 30, 2010	21	0.0042 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	20	1.6087 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	20	0.0029 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Jun 30, 2009	22	1.5963 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Jun 30, 2009	22	0.0013 mg/l	DS000	Accepted
Copper	Jan 1, 2008 – Dec 31, 2008	10	1.057 mg/l	DS000	Accepted
Lead	Jan 1, 2008 – Dec 31, 2008	10	0.0047 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Dec 31, 2007	20	1.3389 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Dec 31, 2007	20	0.0019 mg/l	DS000	Accepted
Copper	Jul 1, 2004 – Dec 31, 2004	20	0.6779 mg/l	DS000	Accepted
Lead	Jul 1, 2004 – Dec 31, 2004	20	0.0021 mg/l	DS000	Accepted
Copper	Jan 1, 2004 – Jun 30, 2004	20	0.9606 mg/l	DS000	Accepted
Lead	Jan 1, 2004 – Jun 30, 2004	20	0.0016 mg/l	DS000	Accepted
Copper	Jul 1, 2001 – Dec 31, 2001	10	1.032 mg/l	DS000	Accepted
Lead	Jul 1, 2001 – Dec 31, 2001	10	0.012 mg/l	DS000	Accepted
Copper	Jul 1, 1999 – Dec 31, 1999	10	1.106 mg/l	DS000	Accepted
Lead	Jul 1, 1999 – Dec 31, 1999	10	0.001 mg/l	DS000	Accepted
Copper	Jul 1, 1996 – Dec 31, 1996	10	1.217 mg/l	DS000	Accepted
Lead	Jul 1, 1996 – Dec 31, 1996	10	0.001 mg/l	DS000	Accepted
Copper	Jul 1, 1995 – Dec 31, 1995	11	1.057 mg/l	DS000	Accepted
Lead	Jul 1, 1995 – Dec 31, 1995	11	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	1.354 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.012 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	1.297 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	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.