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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

MS0070020 , Mt Comfort W/A-Banner

39 of the 72 analytes this system has been tested for have been detected at least once, across 371 samples on record.

The other 33 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 371 samples on record, detections range from September 21, 1993 to April 20, 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.

Every analyte ever detected for Mt Comfort W/A-Banner, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 129 of 150 results Sep 21, 1993 Jun 11, 2025
Lead 1030 Inorganic Chemical 88 of 150 results Sep 21, 1993 Jun 11, 2025
Barium 1010 Inorganic Chemical 25 of 25 results Jul 2, 2002 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 25 of 26 results Jul 2, 2002 Jan 13, 2025
TTHM 2950 Organic Chemical 22 of 25 results Jun 25, 2007 Apr 20, 2026
Bromoform 2942 Organic Chemical 20 of 21 results Jul 11, 2011 Apr 20, 2026
Nickel 1036 Inorganic Chemical 19 of 25 results Jul 2, 2002 Jan 13, 2025
Arsenic 1005 Inorganic Chemical 18 of 25 results Jul 2, 2002 Jan 13, 2025
Chromium 1020 Inorganic Chemical 18 of 25 results Jul 2, 2002 Jan 13, 2025
Dibromochloromethane 2944 Organic Chemical 15 of 21 results Dec 6, 2023 Apr 20, 2026
Selenium 1045 Inorganic Chemical 15 of 25 results Jul 2, 2002 Mar 31, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 12 of 12 results Mar 5, 2012 Mar 23, 2016
Combined Radium (-226 & -228) 4010 Radionuclide 12 of 12 results Mar 5, 2012 Mar 23, 2016
Radium-226 4020 Radionuclide 12 of 12 results Mar 5, 2012 Mar 23, 2016
Sodium 1052 Inorganic Chemical 7 of 7 results Jul 31, 2006 Oct 15, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 28 results Jun 25, 2007 Mar 4, 2024
Dibromoacetic Acid 2454 Organic Chemical 4 of 22 results Aug 13, 2014 Aug 4, 2025
Xylenes, Total 2955 Organic Chemical 4 of 62 results Aug 31, 2011 Oct 9, 2023
Cadmium 1015 Inorganic Chemical 3 of 25 results Feb 16, 2005 Feb 16, 2005
Toluene 2991 Organic Chemical 3 of 62 results Apr 5, 2004 Apr 5, 2004
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 44 results Nov 16, 2020 Nov 16, 2020
Nitrite 1041 Inorganic Chemical 2 of 44 results Nov 16, 2020 Nov 16, 2020
Radium-228 4030 Radionuclide 1 of 12 results Mar 23, 2016 Mar 23, 2016
Calcium 1016 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Chloride 1017 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Iron 1028 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Magnesium 1031 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Manganese 1032 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Potassium 1042 Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Carbon Dioxide 1901 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Color 1905 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
PH 1925 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Alkalinity, Total 1927 Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Jul 31, 2006 Jul 31, 2006
Calculated Sodium NACA Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
PH, Field Result PHFD Water Quality 1 of 1 result Jul 31, 2006 Jul 31, 2006
Mercury 1035 Inorganic Chemical 1 of 25 results Sep 8, 2003 Sep 8, 2003

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 21–30 of 371 samples, newest first — collected July 30, 2024 to May 19, 2025. The summary above covers all 371.

54 results from the 10 samples listed here: 16 detected, 38 not detected. Across the whole record it is 479 of 2,368. 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.

Chemical and radiological sample results for Mt Comfort W/A-Banner, every result from 21 to 30 of 371 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
May 19, 2025 09:53
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-250520-026
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 19, 2025 09:53, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
May 19, 2025 09:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250520-025
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 19, 2025 09:40, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Jan 13, 2025 10:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250114-016
Laboratory
MSDH Lab
0.0028 mg/l , sample collected Jan 13, 2025 10:40, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.151 mg/l , sample collected Jan 13, 2025 10:40, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0015 mg/l , sample collected Jan 13, 2025 10:40, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.195 mg/l , sample collected Jan 13, 2025 10:40, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0008 mg/l , sample collected Jan 13, 2025 10:40, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:40, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 13, 2025 10:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250114-017
Laboratory
MSDH Lab
0.0029 mg/l , sample collected Jan 13, 2025 10:20, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.151 mg/l , sample collected Jan 13, 2025 10:20, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0015 mg/l , sample collected Jan 13, 2025 10:20, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.2 mg/l , sample collected Jan 13, 2025 10:20, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0008 mg/l , sample collected Jan 13, 2025 10:20, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:20, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 13, 2025 10:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-250114-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:15, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:15, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:15, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Jan 13, 2025 10:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250114-001
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:00, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 10:00, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Oct 15, 2024 12:55
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-241016-020
Laboratory
MSDH Lab
121 mg/l , sample collected Oct 15, 2024 12:55, sampling point TF102 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 15, 2024 12:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-241016-019
Laboratory
MSDH Lab
126 mg/l , sample collected Oct 15, 2024 12:45, sampling point TF101 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 12:35
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-113707-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2024 – Sep 30, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
2.8 ug/l , sample collected Jul 30, 2024 12:35, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:35, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
2.8 ug/l , sample collected Jul 30, 2024 12:35, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2024 – Sep 30, 2024
Collected
Jul 30, 2024 12:10
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-113707-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2024 – Sep 30, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
2.9 ug/l , sample collected Jul 30, 2024 12:10, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 12:10, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
2.9 ug/l , sample collected Jul 30, 2024 12:10, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2024 – Sep 30, 2024

Routine (10).