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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 151–160 of 264 samples, newest first — collected July 11, 2011 to February 14, 2012. The summary above covers all 264.

54 results from the 10 samples listed here: 8 detected, 46 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 151 to 160 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
Feb 14, 2012 13:53
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120215-103RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2012 13:53, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 14, 2012 13:31
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
120215-046RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2012 13:31, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Jan 17, 2012 02:31
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120118-086NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 02:31, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 02:31, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 02:31, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Jan 17, 2012 01:22
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
120118-059NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 01:22, sampling point TF103 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 01:22, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 17, 2012 01:22, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Dec 7, 2011 13:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
111208-023
Laboratory
Radiation Safety Engineering
2.4 pci/l , sample collected Dec 7, 2011 13:05, sampling point TF103 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.9 pci/l , sample collected Dec 7, 2011 13:05, sampling point TF103 Combined Radium (-226 & -228) 4010 Not recorded
0.9 pci/l , sample collected Dec 7, 2011 13:05, sampling point TF103 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 13:05, sampling point TF103 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Dec 7, 2011 12:53
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
111208-110
Laboratory
Radiation Safety Engineering
2.3 pci/l , sample collected Dec 7, 2011 12:53, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.6 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 12:53, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.6 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 12:53, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.39 pci/l Minimum Reporting Level , sample collected Dec 7, 2011 12:53, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Nov 28, 2011 02:31
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
111129-004IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.199 mg/l , sample collected Nov 28, 2011 02:31, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.171 mg/l , sample collected Nov 28, 2011 02:31, sampling point TF103 Fluoride 1025 EPA method 380-75WE Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:31, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Nov 28, 2011 02:35
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
111129-003CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Nov 28, 2011 02:35, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Sep 26, 2011 02:42
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110927-012VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 26, 2011 02:42, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Jul 11, 2011 01:50
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110712-015TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2011 01:50, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
3.42 ug/l , sample collected Jul 11, 2011 01:50, 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 01:50, 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 01:50, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.42 ug/l , sample collected Jul 11, 2011 01:50, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013

Routine (10).