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; the list of samples further down is narrowed.
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 |
Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.
Choose a date range
The most recent samples, result by result
The table below lists 21–23 of 23 samples, newest first — collected October 23, 2024 to November 4, 2024. The summary above covers all 23.
23 results from the 3 samples listed here: 0 detected, 23 not detected. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
We withheld the location of 2 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 14:00, sampling point SM2 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 4, 2024 13:00, sampling point SM1 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 23, 2024 14:00, sampling point TF103 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2022 – Dec 31, 2024 |
-
- Collected
- Nov 4, 2024 14:00
- Sampling point
- SM2 Location withheld
- Sample type
- Routine
- Lab sample
- 810-126577-2
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
- Collected
- Nov 4, 2024 13:00
- Sampling point
- SM1 Location withheld
- Sample type
- Routine
- Lab sample
- 810-126577-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
- Collected
- Oct 23, 2024 14:00
- Sampling point
- TF103
- Sample type
- Routine
- Lab sample
- CN-241024-006
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
Routine (3).