Lead and copper

MS0360068 , Wellsgate

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 Wellsgate, 30 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, 2025 – Dec 31, 2025	10	0.0579 mg/l	DS000	Accepted
Lead	Jan 1, 2025 – Dec 31, 2025	2	0 mg/l	DS000	Accepted
Copper	Jan 1, 2024 – Dec 31, 2024	8	0.196 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2024	8	0.0012 mg/l	DS000	Accepted
Copper	Jan 1, 2023 – Dec 31, 2023	10	0.876 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2023	10	0.0024 mg/l	DS000	Accepted
Copper	Jan 1, 2021 – Dec 31, 2021	9	0.736 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2021	9	0.0027 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	10	0.1772 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	10	0.0026 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	10	0.0693 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	10	0.0007 mg/l	DS000	Accepted
Copper	Jan 1, 2011 – Dec 31, 2011	11	0.043 mg/l	DS000	Accepted
Lead	Jan 1, 2011 – Dec 31, 2011	11	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2010 – Dec 31, 2010	10	0.3369 mg/l	DS000	Accepted
Lead	Jan 1, 2010 – Dec 31, 2010	10	0.0096 mg/l	DS000	Accepted
Copper	Jul 1, 2009 – Dec 31, 2009	20	0.0228 mg/l	DS000	Accepted
Lead	Jul 1, 2009 – Dec 31, 2009	20	0.0027 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Jun 30, 2009	22	0.0071 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Jun 30, 2009	22	0 mg/l	DS000	Accepted
Copper	Jan 1, 2007 – Dec 31, 2007	4	0.0933 mg/l	DS000	Accepted
Lead	Jan 1, 2007 – Dec 31, 2007	4	0.0046 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2006	6	0.1653 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2006	6	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2005 – Jun 30, 2005	10	1.3493 mg/l	DS000	Accepted
Lead	Jan 1, 2005 – Jun 30, 2005	10	0.005 mg/l	DS000	Accepted
Copper	Jul 1, 2004 – Dec 31, 2004	10	0.5803 mg/l	DS000	Accepted
Lead	Jul 1, 2004 – Dec 31, 2004	10	0.0036 mg/l	DS000	Accepted
Copper	Jul 1, 2003 – Dec 31, 2003	19	0.585 mg/l	DS000	Accepted
Lead	Jul 1, 2003 – Dec 31, 2003	19	0.004 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.