Lead and copper

MS0070010 , Mt Comfort W/A

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 Mt Comfort W/A, 42 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, 2026 – Dec 31, 2026	10	0.635 mg/l	DS000	Accepted
Lead	Jan 1, 2026 – Dec 31, 2026	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2024 – Dec 31, 2024	10	0.116 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2024	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2023 – Dec 31, 2023	10	0.547 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2023	10	0.0017 mg/l	DS000	Accepted
Copper	Jan 1, 2022 – Dec 31, 2022	5	0.61 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2022	5	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 2021 – Dec 31, 2021	5	0.306 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2021	5	0.0029 mg/l	DS000	Accepted
Copper	Jan 1, 2020 – Dec 31, 2020	5	0.5432 mg/l	DS000	Accepted
Lead	Jan 1, 2020 – Dec 31, 2020	5	0.0026 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2019	5	0.557 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2019	5	0.0066 mg/l	DS000	Accepted
Copper	Jul 1, 2017 – Dec 31, 2017	10	0.3676 mg/l	DS000	Accepted
Lead	Jul 1, 2017 – Dec 31, 2017	10	0.0008 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Jun 30, 2017	10	0.6019 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Jun 30, 2017	10	0.002 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	10	0.3823 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	10	0.0178 mg/l	DS000	Accepted
Copper	Jan 1, 2014 – Dec 31, 2016	20	0.4944 mg/l	DS000	Accepted
Lead	Jan 1, 2014 – Dec 31, 2016	20	0.0178 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.5387 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0032 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2013	10	0.5566 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2013	10	0.0049 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	10	0.5566 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	10	0.0049 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.5447 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0038 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.153 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1999	10	0.283 mg/l	DS000	Accepted
Lead	Jan 1, 1997 – Dec 31, 1999	10	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.078 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.083 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.093 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.004 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.098 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	0.002 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.