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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 181–190 of 371 samples, newest first — collected June 29, 2011 to August 31, 2011. The summary above covers all 371.

65 results from the 10 samples listed here: 16 detected, 49 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.

Chemical and radiological sample results for Mt Comfort W/A-Banner, every result from 181 to 190 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
Aug 31, 2011 01:43
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
110901-012VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
0.684 ug/l , sample collected Aug 31, 2011 01:43, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Collected
Aug 31, 2011 01:43
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110901-011VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
0.656 ug/l , sample collected Aug 31, 2011 01:43, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 31, 2011 01:43, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Collected
Jul 11, 2011 03:33
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110712-016TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
6.57 ug/l , sample collected Jul 11, 2011 03:33, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.57 ug/l , sample collected Jul 11, 2011 03:33, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
Jul 11, 2011 03:33
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110712-016HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jul 11, 2011 03:33, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-132PB
Laboratory
MSDH Lab
0.0447 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0012 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-131PB
Laboratory
MSDH Lab
0.0889 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-130PB
Laboratory
MSDH Lab
0.2619 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-129PB
Laboratory
MSDH Lab
0.1158 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0009 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-128PB
Laboratory
MSDH Lab
0.4184 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0011 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 29, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110630-108PB
Laboratory
MSDH Lab
0.0893 mg/l , sample collected Jun 29, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0011 mg/l , sample collected Jun 29, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).