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
MS0060053 , Deeson Roundlake #2
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, 2022 – Dec 31, 2024 | 5 | 0.15 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2022 – Dec 31, 2024 | 5 | 0.082 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2019 – Dec 31, 2021 | 5 | 0.0036 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2019 – Dec 31, 2021 | 5 | 0 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2016 – Dec 31, 2018 | 5 | 0.0081 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2016 – Dec 31, 2018 | 5 | 0 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2013 – Dec 31, 2015 | 5 | 0.0168 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2013 – Dec 31, 2015 | 5 | 0.002 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2010 – Dec 31, 2012 | 5 | 0.034 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2010 – Dec 31, 2012 | 5 | 0.0031 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2009 – Dec 31, 2009 | 5 | 0.031 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2009 – Dec 31, 2009 | 5 | 0.0052 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2008 – Dec 31, 2008 | 5 | 0.0422 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2008 – Dec 31, 2008 | 5 | 0.0021 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2007 – Dec 31, 2007 | 20 | 0.0539 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2007 – Dec 31, 2007 | 20 | 0.0022 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2004 – Jun 30, 2004 | 10 | 0.1388 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2004 – Jun 30, 2004 | 10 | 0.0076 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2003 – Dec 31, 2003 | 11 | 0.046 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2003 – Dec 31, 2003 | 11 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2002 – Dec 31, 2002 | 10 | 0.059 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2002 – Dec 31, 2002 | 10 | 0.01 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2001 – Jun 30, 2001 | 20 | 0.065 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2001 – Jun 30, 2001 | 20 | 0.004 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2000 – Dec 31, 2000 | 5 | 0.258 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2000 – Dec 31, 2000 | 5 | 0.021 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.