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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 41–50 of 371 samples, newest first — collected June 21, 2022 to October 9, 2023. The summary above covers all 371.

57 results from the 10 samples listed here: 12 detected, 45 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 6 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 41 to 50 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
Oct 9, 2023 16:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-231010-007
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
0.752 ug/l , sample collected Oct 9, 2023 16:10, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 16:10, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Collected
Oct 9, 2023 15:50
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
VO-231010-006
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
0.735 ug/l , sample collected Oct 9, 2023 15:50, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 15:50, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2021 – Dec 31, 2023
Collected
Apr 25, 2023 15:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230426-019
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 25, 2023 15:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Jun 22, 2022 09:05
Sampling point
LC0016 Location withheld
Sample type
Routine
Lab sample
PB-220623-028
Laboratory
MSDH Lab
0.0167 mg/l , sample collected Jun 22, 2022 09:05, sampling point LC0016 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2022 09:05, sampling point LC0016 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-220623-037
Laboratory
MSDH Lab
0.0508 mg/l , sample collected Jun 21, 2022 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.5 ug/l , sample collected Jun 21, 2022 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 05:30
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-220623-036
Laboratory
MSDH Lab
0.168 mg/l , sample collected Jun 21, 2022 05:30, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.6 ug/l , sample collected Jun 21, 2022 05:30, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 06:00
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-220623-035
Laboratory
MSDH Lab
0.0808 mg/l , sample collected Jun 21, 2022 06:00, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2022 06:00, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 06:00
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-220623-034
Laboratory
MSDH Lab
0.198 mg/l , sample collected Jun 21, 2022 06:00, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
1.3 ug/l , sample collected Jun 21, 2022 06:00, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 05:00
Sampling point
LC0012 Location withheld
Sample type
Routine
Lab sample
PB-220623-033
Laboratory
MSDH Lab
0.0103 mg/l , sample collected Jun 21, 2022 05:00, sampling point LC0012 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2022 05:00, sampling point LC0012 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 21, 2022 05:50
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-220623-032
Laboratory
MSDH Lab
0.0412 mg/l , sample collected Jun 21, 2022 05:50, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2022 05:50, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022

Routine (10).