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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

MS0240214 , McGill Wellworks, Inc

19 of the 57 analytes this system has been tested for have been detected at least once, across 238 samples on record.

The other 38 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 238 samples on record, detections range from October 4, 2000 to February 12, 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 McGill Wellworks, Inc, 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 77 of 99 results Oct 4, 2000 Dec 7, 2023
Lead 1030 Inorganic Chemical 52 of 99 results Jul 3, 2001 Dec 7, 2023
Barium 1010 Inorganic Chemical 22 of 22 results Sep 15, 2003 Feb 12, 2025
Fluoride 1025 Inorganic Chemical 21 of 22 results Sep 15, 2003 Feb 12, 2025
Chromium 1020 Inorganic Chemical 14 of 22 results Sep 15, 2003 Apr 22, 2020
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 10 results Jul 30, 2007 Feb 12, 2025
TTHM 2950 Organic Chemical 6 of 8 results Jun 28, 2004 Feb 12, 2025
Nickel 1036 Inorganic Chemical 6 of 22 results Dec 4, 2006 Apr 22, 2020
Arsenic 1005 Inorganic Chemical 5 of 22 results Apr 7, 2008 Jan 17, 2024
Sodium 1052 Inorganic Chemical 2 of 2 results Feb 24, 2021 Feb 24, 2021
Chloroform 2941 Organic Chemical 2 of 5 results Jul 30, 2007 Aug 1, 2018
Dichloroacetic Acid 2451 Organic Chemical 2 of 5 results Sep 17, 2014 Sep 17, 2014
Selenium 1045 Inorganic Chemical 2 of 22 results Mar 16, 2005 Feb 6, 2006
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 15, 2003 Feb 12, 2004
Monochloroacetic Acid 2450 Organic Chemical 1 of 5 results Aug 1, 2018 Aug 1, 2018
Monobromoacetic Acid 2453 Organic Chemical 1 of 5 results Sep 22, 2008 Sep 22, 2008
Dibromochloromethane 2944 Organic Chemical 1 of 5 results Jul 30, 2007 Jul 30, 2007
Cadmium 1015 Inorganic Chemical 1 of 22 results Mar 16, 2005 Mar 16, 2005
Cyanide 1024 Inorganic Chemical 1 of 17 results Sep 15, 2003 Sep 15, 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 111–120 of 238 samples, newest first — collected October 31, 2012 to July 9, 2014. The summary above covers all 238.

42 results from the 10 samples listed here: 10 detected, 32 not detected. Across the whole record it is 226 of 1,240. 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 McGill Wellworks, Inc, every result from 111 to 120 of 238 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
Jul 9, 2014 07:27
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140710-084PB
Laboratory
MSDH Lab
0.0077 mg/l , sample collected Jul 9, 2014 07:27, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0025 mg/l , sample collected Jul 9, 2014 07:27, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 9, 2014 07:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140710-083PB
Laboratory
MSDH Lab
0.0154 mg/l , sample collected Jul 9, 2014 07:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0021 mg/l , sample collected Jul 9, 2014 07:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 9, 2014 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140710-082PB
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jul 9, 2014 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jul 9, 2014 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 9, 2014 07:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140710-081PB
Laboratory
MSDH Lab
0.02 mg/l , sample collected Jul 9, 2014 07:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0023 mg/l , sample collected Jul 9, 2014 07:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 9, 2014 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140710-075PB
Laboratory
MSDH Lab
0.0082 mg/l , sample collected Jul 9, 2014 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0013 mg/l , sample collected Jul 9, 2014 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Mar 3, 2014 01:15
Sampling point
TF102
Sample type
Routine
Lab sample
140304-011CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Mar 3, 2014 01:15, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2013 – Dec 31, 2015
Collected
Feb 19, 2014 13:45
Sampling point
TF102
Sample type
Routine
Lab sample
140220-058NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 19, 2014 13:45, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 19, 2014 13:45, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 19, 2014 13:45, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
Jun 27, 2013 13:00
Sampling point
TF102
Sample type
Routine
Lab sample
130628-007VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 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 Jun 27, 2013 13:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2013 13:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Feb 11, 2013 14:30
Sampling point
TF102
Sample type
Routine
Lab sample
130212-042NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 11, 2013 14:30, 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 Feb 11, 2013 14:30, 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 Feb 11, 2013 14:30, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Oct 31, 2012 12:30
Sampling point
TF102
Sample type
Routine
Lab sample
201301130193
Laboratory
Radiation Safety Engineering
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Oct 31, 2012 12:30, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.22 pci/l Minimum Reporting Level , sample collected Oct 31, 2012 12:30, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.167 pci/l Minimum Reporting Level , sample collected Oct 31, 2012 12:30, sampling point TF102 Radium-226 4020 EPA method 903.1 Oct 1, 2012 – Dec 31, 2012
Not detected below 0.22 pci/l Minimum Reporting Level , sample collected Oct 31, 2012 12:30, sampling point TF102 Radium-228 4030 EPA method 904.0 Oct 1, 2012 – Dec 31, 2012

Routine (10).