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
MS0490018 , Hays Creek W/A-Legion Lake Rd
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 | 0.178 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2023 – Dec 31, 2025 | 5 | 0.0013 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2020 – Dec 31, 2022 | 5 | 0.654 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2020 – Dec 31, 2022 | 5 | 0.0021 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2019 – Dec 31, 2019 | 5 | 0.1091 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2019 – Dec 31, 2019 | 5 | 0.0006 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2018 – Dec 31, 2018 | 5 | 0.2032 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2018 – Dec 31, 2018 | 5 | 0.0021 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2017 – Dec 31, 2017 | 5 | 0.0879 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2017 – Dec 31, 2017 | 5 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2016 – Dec 31, 2016 | 5 | 0.2801 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2016 – Dec 31, 2016 | 5 | 0.0012 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2016 – Jun 30, 2016 | 5 | 0.0646 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2016 – Jun 30, 2016 | 5 | 0.0016 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2015 – Dec 31, 2015 | 5 | 0.2106 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2015 – Dec 31, 2015 | 5 | 0.0013 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2015 – Jun 30, 2015 | 5 | 0.0924 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2015 – Jun 30, 2015 | 5 | 0.0007 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2012 – Dec 31, 2014 | 5 | 0.093 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2012 – Dec 31, 2014 | 5 | 0.022 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2009 – Dec 31, 2011 | 5 | 0.053 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2009 – Dec 31, 2011 | 5 | 0.0018 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2006 – Dec 31, 2008 | 5 | 0.012 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2006 – Dec 31, 2008 | 5 | 0.0005 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2003 – Dec 31, 2005 | 5 | 0.001 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2003 – Dec 31, 2005 | 5 | 0.0003 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2000 – Dec 31, 2002 | 5 | 0.354 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2000 – Dec 31, 2002 | 5 | 0.002 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.084 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.007 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1995 – Dec 31, 1995 | 5 | 0 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1995 – Dec 31, 1995 | 5 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1994 – Jun 30, 1994 | 10 | 0 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1994 – Jun 30, 1994 | 10 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1993 – Dec 31, 1993 | 10 | 0 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1993 – Dec 31, 1993 | 10 | 0.001 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.