Lead and copper

MS0320004 , Union Church Waterworks Assn

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 Union Church Waterworks Assn, 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	0.0064 mg/l	DS000	Accepted
Lead	Jan 1, 2022 – Dec 31, 2024	10	0.0005 mg/l	DS000	Accepted
Copper	Jan 1, 2019 – Dec 31, 2021	10	0.0028 mg/l	DS000	Accepted
Lead	Jan 1, 2019 – Dec 31, 2021	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	10	0.0921 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	10	0.0086 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.209 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0014 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	10	0.1684 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	10	0.0034 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.538 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.006 mg/l	DS000	Accepted
Copper	Jan 1, 1997 – Dec 31, 1999	10	0.139 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	0.284 mg/l	DS000	Accepted
Lead	Jan 1, 1996 – Dec 31, 1996	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1995 – Dec 31, 1995	10	0.281 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	20	0.347 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	20	0.006 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.395 mg/l	DS000	Accepted
Lead	Jul 1, 1993 – Dec 31, 1993	20	0.006 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.