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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

MS0070011 , Mt Comfort W/A-Mt Moriah

24 of the 57 analytes this system has been tested for have been detected at least once, across 333 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 333 samples on record, detections range from September 21, 1993 to August 4, 2025. 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-Mt Moriah, 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 90 of 115 results Sep 21, 1993 Jun 11, 2025
Lead 1030 Inorganic Chemical 72 of 115 results Sep 21, 1993 Jun 11, 2025
Xylenes, Total 2955 Organic Chemical 24 of 78 results Oct 6, 2004 Feb 18, 2020
Barium 1010 Inorganic Chemical 20 of 20 results Jul 2, 2002 Jan 8, 2024
Fluoride 1025 Inorganic Chemical 19 of 20 results Jul 2, 2002 Jan 8, 2024
Arsenic 1005 Inorganic Chemical 17 of 20 results Jul 2, 2002 Jan 8, 2024
Nickel 1036 Inorganic Chemical 16 of 20 results Jul 2, 2002 Jan 8, 2024
Selenium 1045 Inorganic Chemical 16 of 20 results Jul 2, 2002 Jan 8, 2024
TTHM 2950 Organic Chemical 7 of 24 results Jun 25, 2007 Aug 4, 2025
Chromium 1020 Inorganic Chemical 7 of 20 results Feb 16, 2005 Mar 31, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 7 of 7 results Dec 7, 2011 Nov 18, 2013
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 7 results Dec 7, 2011 Nov 18, 2013
Radium-226 4020 Radionuclide 7 of 7 results Dec 7, 2011 Nov 18, 2013
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 18, 2019 Oct 15, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 26 results Jun 25, 2007 Mar 4, 2024
Bromoform 2942 Organic Chemical 5 of 19 results Jul 11, 2011 Aug 4, 2025
Ethylbenzene 2992 Organic Chemical 5 of 78 results Oct 6, 2004 Jul 24, 2017
Dibromoacetic Acid 2454 Organic Chemical 2 of 20 results Jul 11, 2011 Jun 6, 2019
Dichloroacetic Acid 2451 Organic Chemical 1 of 20 results Jun 6, 2019 Jun 6, 2019
Cyanide 1024 Inorganic Chemical 1 of 20 results Mar 10, 2008 Mar 10, 2008
Thallium, Total 1085 Inorganic Chemical 1 of 20 results Dec 3, 2007 Dec 3, 2007
Nitrite 1041 Inorganic Chemical 1 of 43 results Jul 18, 2005 Jul 18, 2005
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 43 results May 3, 2004 May 3, 2004
Nitrate 1040 Inorganic Chemical 1 of 43 results May 3, 2004 May 3, 2004

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 171–180 of 333 samples, newest first — collected April 18, 2012 to September 9, 2013. The summary above covers all 333.

63 results from the 10 samples listed here: 11 detected, 52 not detected. Across the whole record it is 339 of 2,511. 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-Mt Moriah, every result from 171 to 180 of 333 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
Sep 9, 2013 13:49
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201402280104
Laboratory
Radiation Safety Engineering
0.5 pci/l , sample collected Sep 9, 2013 13:49, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
0.5 pci/l , sample collected Sep 9, 2013 13:49, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2013 – Sep 30, 2013
Not detected below 0.38 pci/l Minimum Reporting Level , sample collected Sep 9, 2013 13:49, sampling point TF101 Radium-228 4030 EPA method 904 Jul 1, 2013 – Sep 30, 2013
Collected
Sep 9, 2013 13:49
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130911-003RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 9, 2013 13:49, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2013 – Sep 30, 2013
Collected
May 20, 2013 01:05
Sampling point
TF102
Sample type
Routine
Lab sample
130521-007VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 20, 2013 01:05, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2013 – Dec 31, 2013
Collected
Jan 14, 2013 02:26
Sampling point
TF102
Sample type
Routine
Lab sample
130115-022NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 14, 2013 02:26, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 14, 2013 02:26, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 14, 2013 02:26, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Jul 11, 2012 12:36
Sampling point
TF102
Sample type
Routine
Lab sample
201211120067
Laboratory
Radiation Safety Engineering
3 pci/l , sample collected Jul 11, 2012 12:36, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.3 pci/l , sample collected Jul 11, 2012 12:36, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
0.3 pci/l , sample collected Jul 11, 2012 12:36, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.3 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:36, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 14:07
Sampling point
TF102
Sample type
Routine
Lab sample
120711-042
Laboratory
Radiation Safety Engineering
3 pci/l , sample collected Jul 10, 2012 14:07, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.3 pci/l , sample collected Jul 10, 2012 14:07, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
0.3 pci/l , sample collected Jul 10, 2012 14:07, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.3 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:07, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 14:07
Sampling point
TF102
Sample type
Routine
Lab sample
120711-042RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2012 14:07, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
May 7, 2012 02:15
Sampling point
TF102
Sample type
Routine
Lab sample
120508-004VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 7, 2012 02:15, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Collected
Apr 18, 2012 14:47
Sampling point
TF102
Sample type
Routine
Lab sample
120419-073
Laboratory
Radiation Safety Engineering
3 pci/l , sample collected Apr 18, 2012 14:47, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.3 pci/l , sample collected Apr 18, 2012 14:47, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
0.3 pci/l , sample collected Apr 18, 2012 14:47, sampling point TF102 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.3 pci/l Minimum Reporting Level , sample collected Apr 18, 2012 14:47, sampling point TF102 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 18, 2012 14:47
Sampling point
TF102
Sample type
Routine
Lab sample
120419-073RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2012 14:47, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012

Routine (10).