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
MS0510022 , South Newton Rural W/A #4
51–78 of 78 monitoring periods, newest first. 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 | Jul 1, 2010 – Dec 31, 2010 | 20 | 3.1155 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2010 – Dec 31, 2010 | 20 | 0.024 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2010 – Jun 30, 2010 | 20 | 2.235 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2010 – Jun 30, 2010 | 20 | 0.0138 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2009 – Dec 31, 2009 | 10 | 1.6941 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2009 – Dec 31, 2009 | 10 | 0.0036 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2008 – Dec 31, 2008 | 9 | 1.0441 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2008 – Dec 31, 2008 | 9 | 0.0045 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2007 – Dec 31, 2007 | 20 | 0.9855 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2007 – Dec 31, 2007 | 20 | 0.0104 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2004 – Dec 31, 2004 | 20 | 0.1941 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2004 – Dec 31, 2004 | 20 | 0.0006 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2004 – Jun 30, 2004 | 20 | 0.2509 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2004 – Jun 30, 2004 | 20 | 0.0013 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2003 – Dec 31, 2003 | 20 | 0.17 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2003 – Dec 31, 2003 | 20 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2003 – Jun 30, 2003 | 16 | 3.269 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2003 – Jun 30, 2003 | 16 | 0.011 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2000 – Dec 31, 2002 | 45 | 3.675 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2000 – Dec 31, 2002 | 45 | 0.015 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.152 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.003 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1995 – Dec 31, 1995 | 5 | 0.101 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1995 – Dec 31, 1995 | 5 | 0.005 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1994 – Jun 30, 1994 | 10 | 0.356 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1994 – Jun 30, 1994 | 10 | 0.003 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1993 – Dec 31, 1993 | 11 | 0.61 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1993 – Dec 31, 1993 | 11 | 0.005 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.