Lead and copper

MS0510009 , City of Newton

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 City of Newton, 34 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, 2021 – Dec 31, 2023	20	0.17 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2023	20	0.00198 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	20	0.2998 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	20	0.0057 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	20	0.3995 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	20	0.0103 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	20	0.2387 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	20	0.0046 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2011	21	0.3786 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2011	21	0.0025 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Dec 31, 2010	20	0.6612 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Dec 31, 2010	20	0.0035 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	40	0.3382 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	40	0.0069 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Jun 30, 2009	40	0.3437 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Jun 30, 2009	40	0.0077 mg/l	DS000	Accepted
Copper	Jul 1, 2008 – Dec 31, 2008	20	0.63 mg/l	DS000	Accepted
Lead	Jul 1, 2008 – Dec 31, 2008	20	0.0061 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Dec 31, 2007	20	0.4833 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Dec 31, 2007	20	0.027 mg/l	DS000	Accepted
Copper	Jan 1, 2002 – Dec 31, 2004	20	0.403 mg/l	DS000	Accepted
Lead	Jan 1, 2002 – Dec 31, 2004	20	0.0038 mg/l	DS000	Accepted
Copper	Jan 1, 1999 – Dec 31, 2001	20	0.239 mg/l	DS000	Accepted
Lead	Jan 1, 1999 – Dec 31, 2001	20	0.007 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1998	20	0.199 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1998	20	0.015 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	19	0.119 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	19	0.009 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Dec 31, 1994	22	0.073 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Dec 31, 1994	22	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1993 – Jun 30, 1993	40	0.178 mg/l	DS000	Accepted
Lead	Jan 1, 1993 – Jun 30, 1993	40	0.008 mg/l	DS000	Accepted
Copper	Jul 1, 1992 – Dec 31, 1992	40	0.25 mg/l	DS000	Accepted
Lead	Jul 1, 1992 – Dec 31, 1992	40	0.014 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.