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
MS0360009 , Hurricane Creek Water Assn
51–70 of 70 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 | Jan 1, 2003 – Jun 30, 2003 | 20 | 0.099 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2003 – Jun 30, 2003 | 20 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 2002 – Dec 31, 2002 | 20 | 0.55 mg/l | DS000 | Accepted |
| Lead | Jul 1, 2002 – Dec 31, 2002 | 20 | 0.003 mg/l | DS000 | Accepted |
| Copper | Jan 1, 2001 – Dec 31, 2001 | 5 | 0.726 mg/l | DS000 | Accepted |
| Lead | Jan 1, 2001 – Dec 31, 2001 | 5 | 0.04 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1999 – Dec 31, 1999 | 5 | 0.976 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1999 – Dec 31, 1999 | 5 | 0.003 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.465 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1996 – Dec 31, 1996 | 5 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1995 – Dec 31, 1995 | 10 | 0 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1995 – Dec 31, 1995 | 10 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1995 – Jun 30, 1995 | 10 | 0 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1995 – Jun 30, 1995 | 10 | 0.001 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1994 – Dec 31, 1994 | 10 | 2.332 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1994 – Dec 31, 1994 | 10 | 0.004 mg/l | DS000 | Accepted |
| Copper | Jan 1, 1994 – Jun 30, 1994 | 10 | 1.543 mg/l | DS000 | Accepted |
| Lead | Jan 1, 1994 – Jun 30, 1994 | 10 | 0.004 mg/l | DS000 | Accepted |
| Copper | Jul 1, 1993 – Dec 31, 1993 | 10 | 3.036 mg/l | DS000 | Accepted |
| Lead | Jul 1, 1993 – Dec 31, 1993 | 10 | 0.007 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.