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.
Chemical and radiological sample results
MS0090024 , Thorn Water Association
28 of the 57 analytes this system has been tested for have been detected at least once, across 419 samples on record.
The other 29 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.
Across all 419 samples on record, detections range from November 30, 1993 to June 29, 2026. These figures cover the whole record.
What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.
What has been detected, ever
Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 115 of 149 results | Nov 30, 1993 | Jun 17, 2025 |
| Lead 1030 | Inorganic Chemical | 99 of 149 results | Nov 30, 1993 | Jun 17, 2025 |
| Barium 1010 | Inorganic Chemical | 31 of 31 results | Mar 19, 2002 | Jun 29, 2026 |
| Fluoride 1025 | Inorganic Chemical | 31 of 31 results | Mar 19, 2002 | Jun 29, 2026 |
| Xylenes, Total 2955 | Organic Chemical | 23 of 76 results | Jul 6, 2004 | Aug 2, 2010 |
| Chromium 1020 | Inorganic Chemical | 17 of 31 results | Mar 19, 2002 | Jan 13, 2025 |
| TTHM 2950 | Organic Chemical | 16 of 23 results | Jul 11, 2007 | Apr 20, 2026 |
| Arsenic 1005 | Inorganic Chemical | 13 of 31 results | Feb 14, 2005 | Jan 9, 2024 |
| Nickel 1036 | Inorganic Chemical | 11 of 29 results | Feb 14, 2005 | Apr 21, 2014 |
| Bromoform 2942 | Organic Chemical | 10 of 18 results | Dec 13, 2023 | Apr 20, 2026 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 of 15 results | Mar 5, 2012 | Oct 3, 2012 |
| Selenium 1045 | Inorganic Chemical | 9 of 31 results | Jan 12, 2004 | Mar 24, 2008 |
| Dibromochloromethane 2944 | Organic Chemical | 8 of 18 results | Dec 13, 2023 | Apr 20, 2026 |
| Sodium 1052 | Inorganic Chemical | 8 of 8 results | Sep 23, 2019 | Oct 14, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 7 of 23 results | Jul 11, 2007 | Feb 21, 2024 |
| Nitrite 1041 | Inorganic Chemical | 4 of 65 results | Jun 5, 2006 | Nov 28, 2006 |
| Ethylbenzene 2992 | Organic Chemical | 4 of 76 results | Jul 6, 2004 | Jan 26, 2005 |
| Cyanide 1024 | Inorganic Chemical | 3 of 27 results | Dec 4, 2006 | May 2, 2018 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 3 of 65 results | May 3, 2004 | Nov 28, 2006 |
| Sulfate 1055 | Inorganic Chemical | 3 of 4 results | Mar 19, 2002 | Jan 12, 2004 |
| Dibromoacetic Acid 2454 | Organic Chemical | 2 of 16 results | Dec 13, 2023 | Jul 30, 2024 |
| Cadmium 1015 | Inorganic Chemical | 2 of 31 results | Feb 14, 2005 | Feb 14, 2005 |
| Toluene 2991 | Organic Chemical | 2 of 76 results | Jan 26, 2005 | Jan 26, 2005 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 16 results | Feb 21, 2024 | Feb 21, 2024 |
| Trichloroacetic Acid 2452 | Organic Chemical | 1 of 16 results | Feb 21, 2024 | Feb 21, 2024 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 16 results | Jul 13, 2020 | Jul 13, 2020 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 16 results | Jul 12, 2011 | Jul 12, 2011 |
| Nitrate 1040 | Inorganic Chemical | 1 of 65 results | May 3, 2004 | May 3, 2004 |
No date range is applied: this list draws on every sample on record. Show the last two years only.
The most recent samples, result by result
The table below lists 351–360 of 419 samples, newest first — collected June 14, 1996 to September 15, 1999. The summary above covers all 419.
20 results from the 10 samples listed here: 11 detected, 9 not detected. Across the whole record it is 436 of 2,741. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.08 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.059 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.051 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.072 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.127 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Sep 15, 1999, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 14, 1996, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Jun 14, 1996, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-020L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.08 mg/l
-
Lead 1030
- Result
- 0.003 mg/l
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-019L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-018L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.059 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-016L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-015L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.051 mg/l
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-014L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.072 mg/l
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-013L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-012L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Sep 15, 1999
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 990916-011L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.127 mg/l
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Jun 14, 1996
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 960614-056L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.003 mg/l
Routine (10).