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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

MS0070017 , Mt Comfort W/A-Sarepta

25 of the 57 analytes this system has been tested for have been detected at least once, across 264 samples on record.

The other 32 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 264 samples on record, detections range from September 22, 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-Sarepta, 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 57 of 74 results Sep 22, 1993 Jun 4, 2025
Lead 1030 Inorganic Chemical 48 of 74 results Sep 22, 1993 Jun 26, 2019
Barium 1010 Inorganic Chemical 24 of 24 results Jul 2, 2002 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 23 of 23 results Jul 2, 2002 Jan 13, 2025
Selenium 1045 Inorganic Chemical 22 of 24 results Jul 2, 2002 Jan 13, 2025
TTHM 2950 Organic Chemical 21 of 24 results Jun 25, 2007 Apr 20, 2026
Nickel 1036 Inorganic Chemical 21 of 24 results Jul 2, 2002 Jan 13, 2025
Bromoform 2942 Organic Chemical 17 of 18 results Jul 11, 2011 Apr 20, 2026
Arsenic 1005 Inorganic Chemical 17 of 24 results Jul 2, 2002 Jan 13, 2025
Chromium 1020 Inorganic Chemical 15 of 24 results Jul 2, 2002 Jan 13, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Dec 7, 2011 Mar 23, 2016
Combined Radium (-226 & -228) 4010 Radionuclide 10 of 15 results Dec 7, 2011 Mar 23, 2016
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 26 results Jun 25, 2007 Apr 7, 2025
Radium-226 4020 Radionuclide 9 of 15 results Dec 7, 2011 Dec 8, 2015
Dibromochloromethane 2944 Organic Chemical 8 of 18 results Dec 6, 2023 Aug 4, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 18, 2019 Oct 15, 2024
Radium-228 4030 Radionuclide 4 of 15 results Sep 15, 2014 Mar 23, 2016
Bromodichloromethane 2943 Organic Chemical 2 of 18 results May 13, 2024 May 13, 2024
Cadmium 1015 Inorganic Chemical 2 of 24 results Feb 16, 2005 May 3, 2022
Thallium, Total 1085 Inorganic Chemical 2 of 24 results Dec 11, 2013 May 3, 2022
Dibromoacetic Acid 2454 Organic Chemical 2 of 19 results Sep 6, 2017 Jun 6, 2019
Antimony, Total 1074 Inorganic Chemical 1 of 24 results May 3, 2022 May 3, 2022
Beryllium, Total 1075 Inorganic Chemical 1 of 24 results May 3, 2022 May 3, 2022
Dichloroacetic Acid 2451 Organic Chemical 1 of 19 results Aug 13, 2014 Aug 13, 2014
Monobromoacetic Acid 2453 Organic Chemical 1 of 19 results Aug 13, 2014 Aug 13, 2014

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 71–80 of 264 samples, newest first — collected April 24, 2018 to January 29, 2019. The summary above covers all 264.

54 results from the 10 samples listed here: 12 detected, 42 not detected. Across the whole record it is 338 of 1,342. 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-Sarepta, every result from 71 to 80 of 264 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
Jan 29, 2019 14:15
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
190130-063NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Jan 29, 2019 14:15
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
190130-010NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2019 14:15, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Sep 17, 2018 01:13
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
180918-020IN
Laboratory
MSDH Lab
0.0046 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.3298 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:13, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0025 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.139 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:13, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0009 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
0.005 mg/l , sample collected Sep 17, 2018 01:13, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:13, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:13, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:13, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Sep 17, 2018 01:23
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180918-019IN
Laboratory
MSDH Lab
0.0051 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.3549 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:23, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0027 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.142 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:23, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.001 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
0.0058 mg/l , sample collected Sep 17, 2018 01:23, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:23, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:23, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 01:23, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Jul 9, 2018 14:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180710-029RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2018 14:40, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Jul 9, 2018 14:13
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180710-028RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 9, 2018 14:13, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Not recorded
Collected
May 21, 2018 03:09
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
180522-011VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 21, 2018 03:09, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2018 – Dec 31, 2020
Collected
Apr 24, 2018 02:23
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180425-030CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 24, 2018 02:23, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Apr 24, 2018 02:41
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
180425-028CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 24, 2018 02:41, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Apr 24, 2018 02:41
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180425-027CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 24, 2018 02:41, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019

Routine (10).