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
MS0180021 , Black Creek Retreat
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, 2023 – Dec 31, 2025 | 5 | 0.493 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2023 – Dec 31, 2025 | 5 | 0.0017 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2020 – Dec 31, 2022 | 5 | 0.294 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2020 – Dec 31, 2022 | 5 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2019 – Dec 31, 2019 | 5 | 0.734 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2019 – Dec 31, 2019 | 5 | 0.0035 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2018 – Dec 31, 2018 | 5 | 0.234 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2018 – Dec 31, 2018 | 5 | 0.002 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2017 – Dec 31, 2017 | 5 | 0.2818 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2017 – Dec 31, 2017 | 5 | 0.0029 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2015 – Dec 31, 2015 | 5 | 0.337 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2015 – Dec 31, 2015 | 5 | 0.0026 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2013 – Dec 31, 2013 | 6 | 0.5055 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2013 – Dec 31, 2013 | 6 | 0.0005 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2010 – Dec 31, 2010 | 6 | 0.6221 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2010 – Dec 31, 2010 | 6 | 0.0009 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2009 – Jun 30, 2009 | 10 | 0.049 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2009 – Jun 30, 2009 | 10 | 0.002 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2008 – Dec 31, 2008 | 6 | 0.0703 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2008 – Dec 31, 2008 | 6 | 0.0089 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2008 – Jun 30, 2008 | 10 | 0.5413 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2008 – Jun 30, 2008 | 10 | 0.0049 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.