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
MS0410013 , Town of Shannon
35 of the 72 analytes this system has been tested for have been detected at least once, across 256 samples on record.
The other 37 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 256 samples on record, detections range from November 24, 2003 to November 17, 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 | 67 of 67 results | Sep 12, 2007 | Jul 22, 2025 |
| Lead 1030 | Inorganic Chemical | 47 of 67 results | Sep 12, 2007 | Jul 22, 2025 |
| Barium 1010 | Inorganic Chemical | 25 of 25 results | Nov 24, 2003 | Mar 10, 2025 |
| Chromium 1020 | Inorganic Chemical | 21 of 25 results | Nov 24, 2003 | Jan 10, 2024 |
| Nickel 1036 | Inorganic Chemical | 16 of 25 results | Nov 29, 2004 | Mar 10, 2025 |
| Fluoride 1025 | Inorganic Chemical | 14 of 26 results | Nov 24, 2003 | Mar 10, 2025 |
| Selenium 1045 | Inorganic Chemical | 10 of 25 results | Nov 24, 2003 | Mar 27, 2006 |
| Arsenic 1005 | Inorganic Chemical | 7 of 25 results | Nov 29, 2004 | Mar 10, 2025 |
| Nitrite 1041 | Inorganic Chemical | 5 of 53 results | Feb 20, 2013 | Mar 10, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 10 results | Mar 29, 2012 | Oct 3, 2012 |
| TTHM 2950 | Organic Chemical | 4 of 22 results | Oct 16, 2007 | Nov 17, 2025 |
| Sodium 1052 | Inorganic Chemical | 4 of 4 results | May 11, 2016 | Feb 10, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 3 of 21 results | Jun 8, 2010 | May 26, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 3 of 25 results | Mar 30, 2005 | Apr 28, 2020 |
| Cyanide 1024 | Inorganic Chemical | 3 of 23 results | Dec 20, 2005 | May 22, 2017 |
| Sulfate 1055 | Inorganic Chemical | 3 of 3 results | Nov 24, 2003 | May 11, 2016 |
| Bromoform 2942 | Organic Chemical | 2 of 17 results | Sep 30, 2020 | Nov 17, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 2 of 53 results | Mar 10, 2025 | Mar 10, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 2 of 31 results | Feb 16, 2005 | May 11, 2006 |
| Cadmium 1015 | Inorganic Chemical | 2 of 25 results | Mar 2, 2005 | Mar 2, 2005 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 17 results | Nov 17, 2025 | Nov 17, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 15 results | Aug 12, 2019 | Aug 12, 2019 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Color 1905 | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | May 11, 2016 | May 11, 2016 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 31 results | Feb 16, 2005 | Feb 16, 2005 |
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 41–50 of 256 samples, newest first — collected June 7, 2022 to June 7, 2022. The summary above covers all 256.
20 results from the 10 samples listed here: 19 detected, 1 not detected. Across the whole record it is 260 of 1,503. 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 |
|---|---|---|
|
||
| 0.246 mg/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 0.7 ug/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.11 mg/l , sample collected Jun 7, 2022 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 0.8 ug/l , sample collected Jun 7, 2022 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0884 mg/l , sample collected Jun 7, 2022 08:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 1 ug/l , sample collected Jun 7, 2022 08:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0869 mg/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 2.7 ug/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0364 mg/l , sample collected Jun 7, 2022 12:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 7, 2022 12:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0763 mg/l , sample collected Jun 7, 2022 08:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 1.1 ug/l , sample collected Jun 7, 2022 08:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.327 mg/l , sample collected Jun 7, 2022 06:50, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 1 ug/l , sample collected Jun 7, 2022 06:50, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0283 mg/l , sample collected Jun 7, 2022 13:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 1.5 ug/l , sample collected Jun 7, 2022 13:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0568 mg/l , sample collected Jun 7, 2022 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 1.5 ug/l , sample collected Jun 7, 2022 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
|
||
| 0.0075 mg/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
| 6 ug/l , sample collected Jun 7, 2022 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2022 |
-
- Collected
- Jun 7, 2022 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-020
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.246 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.7 ug/l
-
- Collected
- Jun 7, 2022 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-019
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.11 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.8 ug/l
-
- Collected
- Jun 7, 2022 08:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-018
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0884 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 1 ug/l
-
- Collected
- Jun 7, 2022 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-017
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0869 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 2.7 ug/l
-
- Collected
- Jun 7, 2022 12:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-016
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0364 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jun 7, 2022 08:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-015
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0763 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 1.1 ug/l
-
- Collected
- Jun 7, 2022 06:50
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-014
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.327 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 1 ug/l
-
- Collected
- Jun 7, 2022 13:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-013
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0283 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 1.5 ug/l
-
- Collected
- Jun 7, 2022 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-012
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0568 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 1.5 ug/l
-
- Collected
- Jun 7, 2022 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-220608-011
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0075 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 6 ug/l
Routine (10).