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
MS0290002 , Dorsey Water Association
11 of the 14 analytes this system has been tested for have been detected at least once, across 397 samples on record.
The other 3 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 397 samples on record, detections range from July 19, 1993 to November 3, 2025. 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 | 151 of 200 results | Jul 19, 1993 | Sep 23, 2025 |
| TTHM 2950 | Organic Chemical | 100 of 100 results | Jun 7, 2004 | Nov 3, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 97 of 97 results | Aug 16, 2004 | Nov 3, 2025 |
| Chloroform 2941 | Organic Chemical | 70 of 70 results | May 15, 2006 | Nov 3, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 70 of 70 results | May 15, 2006 | Nov 3, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 65 of 65 results | Oct 22, 2007 | Nov 3, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 64 of 65 results | Oct 22, 2007 | Nov 3, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 37 of 65 results | Jan 22, 2008 | Jun 16, 2020 |
| Lead 1030 | Inorganic Chemical | 29 of 200 results | Jul 19, 1993 | Jun 24, 2020 |
| Dibromochloromethane 2944 | Organic Chemical | 21 of 70 results | Aug 7, 2006 | Nov 3, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 9 of 65 results | May 10, 2011 | Jun 16, 2020 |
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 141–150 of 397 samples, newest first — collected June 14, 2017 to June 15, 2017. The summary above covers all 397.
20 results from the 10 samples listed here: 13 detected, 7 not detected. Across the whole record it is 713 of 1,203. 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 |
|---|---|---|
|
||
| 0.0339 mg/l , sample collected Jun 15, 2017, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.003 mg/l , sample collected Jun 15, 2017 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.3825 mg/l , sample collected Jun 15, 2017 06:06, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.1 mg/l , sample collected Jun 15, 2017 06:06, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0876 mg/l , sample collected Jun 15, 2017 14:10, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 14:10, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0434 mg/l , sample collected Jun 15, 2017 13:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 13:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0276 mg/l , sample collected Jun 15, 2017 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0568 mg/l , sample collected Jun 15, 2017 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0234 mg/l , sample collected Jun 15, 2017 09:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0006 mg/l , sample collected Jun 15, 2017 09:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.037 mg/l , sample collected Jun 15, 2017 13:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 15, 2017 13:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0697 mg/l , sample collected Jun 14, 2017 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0008 mg/l , sample collected Jun 14, 2017 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
-
- Collected
- Jun 15, 2017
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-045PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0339 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-044PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.003 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 06:06
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-043PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3825 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.1 mg/l
-
- Collected
- Jun 15, 2017 14:10
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-042PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0876 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 13:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-041PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0434 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-040PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0276 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-039PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0568 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 15, 2017 09:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-038PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0234 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Jun 15, 2017 13:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-037PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.037 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 14, 2017 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170616-050PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0697 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
Routine (10).