This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.
Lead and copper
MS0190006 , Sixtown Water Association
Every monitoring period on record is listed here. This page applies no date range. The same list limited to the last two years.
| Analyte | Monitoring period | Samples | 90th percentile | Facility | Data quality |
|---|---|---|---|---|---|
| Copper | Jan 1, 2026 – Dec 31, 2028 | 10 | 0.0073 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2026 – Dec 31, 2028 | 10 | 0.0014 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2025 – Dec 31, 2025 | 10 | 0.0062 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2025 – Dec 31, 2025 | 10 | 0.0015 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2024 – Dec 31, 2024 | 10 | 0.0142 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2024 – Dec 31, 2024 | 10 | 0.0037 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2023 – Dec 31, 2023 | 10 | 0.0091 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2023 – Dec 31, 2023 | 10 | 0.0014 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2022 – Dec 31, 2022 | 10 | 0.0174 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2022 – Dec 31, 2022 | 10 | 0.0019 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2021 – Dec 31, 2021 | 10 | 0.0093 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2021 – Dec 31, 2021 | 10 | 0.0037 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2020 – Dec 31, 2020 | 20 | 0.0068 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2020 – Dec 31, 2020 | 20 | 0.0037 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2020 – Jun 30, 2020 | 20 | 0.006 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2020 – Jun 30, 2020 | 20 | 0.0033 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2019 – Dec 31, 2019 | 10 | 0.1161 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2019 – Dec 31, 2019 | 10 | 0.0174 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2018 – Dec 31, 2018 | 10 | 0.0073 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2018 – Dec 31, 2018 | 10 | 0.0032 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2017 – Dec 31, 2017 | 20 | 0.0112 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2017 – Dec 31, 2017 | 20 | 0.0049 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2017 – Jun 30, 2017 | 20 | 0.0157 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2017 – Jun 30, 2017 | 20 | 0.0042 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2015 – Dec 31, 2017 | 10 | 0.4278 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2015 – Dec 31, 2017 | 10 | 0.039 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2014 – Dec 31, 2016 | 20 | 0.0186 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2014 – Dec 31, 2016 | 20 | 0.0051 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2012 – Dec 31, 2014 | 10 | 0.0161 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2012 – Dec 31, 2014 | 10 | 0.0027 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2011 – Dec 31, 2013 | 10 | 0.0238 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2011 – Dec 31, 2013 | 10 | 0.0019 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2009 – Dec 31, 2011 | 10 | 0.0238 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2009 – Dec 31, 2011 | 10 | 0.0019 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2006 – Dec 31, 2008 | 10 | 0.0208 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2006 – Dec 31, 2008 | 10 | 0.0044 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2000 – Dec 31, 2002 | 10 | 1.12 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2000 – Dec 31, 2002 | 10 | 0.004 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1996 – Dec 31, 1996 | 10 | 1.068 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1996 – Dec 31, 1996 | 10 | 0.007 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1995 – Dec 31, 1995 | 10 | 1.054 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1995 – Dec 31, 1995 | 10 | 0.009 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1994 – Jun 30, 1994 | 20 | 1.28 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1994 – Jun 30, 1994 | 20 | 0.007 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1993 – Dec 31, 1993 | 20 | 0.581 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1993 – Dec 31, 1993 | 20 | 0.004 mg/l | DS000 | Accepted |
No date of receipt is recorded for any of these summaries.
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.