Lead and copper

MS0220002 , G T & Y Water District Inc

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 G T & Y Water District Inc, 32 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	20	0.564 mg/l	DS000	Accepted
Lead	Jan 1, 2025 – Dec 31, 2025	20	0.0009 mg/l	DS000	Accepted
Copper	Jan 1, 2024 – Dec 31, 2024	20	0.894 mg/l	DS000	Accepted
Lead	Jan 1, 2024 – Dec 31, 2024	20	0.0022 mg/l	DS000	Accepted
Copper	Jan 1, 2023 – Dec 31, 2023	20	0.638 mg/l	DS000	Accepted
Lead	Jan 1, 2023 – Dec 31, 2023	20	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2021 – Dec 31, 2023	18	0.51 mg/l	DS000	Accepted
Lead	Jan 1, 2021 – Dec 31, 2023	18	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2020 – Dec 31, 2022	18	0.51 mg/l	DS000	Accepted
Lead	Jan 1, 2020 – Dec 31, 2022	18	0.0015 mg/l	DS000	Accepted
Copper	Jan 1, 2018 – Dec 31, 2020	20	0.7749 mg/l	DS000	Accepted
Lead	Jan 1, 2018 – Dec 31, 2020	20	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2017 – Dec 31, 2019	20	0.7749 mg/l	DS000	Accepted
Lead	Jan 1, 2017 – Dec 31, 2019	20	0.0018 mg/l	DS000	Accepted
Copper	Jan 1, 2015 – Dec 31, 2017	20	0.7847 mg/l	DS000	Accepted
Lead	Jan 1, 2015 – Dec 31, 2017	20	0.0048 mg/l	DS000	Accepted
Copper	Jan 1, 2012 – Dec 31, 2014	20	0.9795 mg/l	DS000	Accepted
Lead	Jan 1, 2012 – Dec 31, 2014	20	0.0064 mg/l	DS000	Accepted
Copper	Jan 1, 2009 – Dec 31, 2011	20	0.558 mg/l	DS000	Accepted
Lead	Jan 1, 2009 – Dec 31, 2011	20	0.0031 mg/l	DS000	Accepted
Copper	Jan 1, 2006 – Dec 31, 2008	20	0.5741 mg/l	DS000	Accepted
Lead	Jan 1, 2006 – Dec 31, 2008	20	0.005 mg/l	DS000	Accepted
Copper	Jan 1, 2000 – Dec 31, 2002	10	0.441 mg/l	DS000	Accepted
Lead	Jan 1, 2000 – Dec 31, 2002	10	0.003 mg/l	DS000	Accepted
Copper	Jan 1, 1996 – Dec 31, 1996	10	0.711 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	0.487 mg/l	DS000	Accepted
Lead	Jan 1, 1995 – Dec 31, 1995	10	0.004 mg/l	DS000	Accepted
Copper	Jan 1, 1994 – Jun 30, 1994	30	1.063 mg/l	DS000	Accepted
Lead	Jan 1, 1994 – Jun 30, 1994	30	0.005 mg/l	DS000	Accepted
Copper	Jul 1, 1993 – Dec 31, 1993	20	0.892 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.