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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

MS0040006 , Town of McCool

25 of the 57 analytes this system has been tested for have been detected at least once, across 327 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 327 samples on record, detections range from August 30, 1993 to September 25, 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 Town of McCool, 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 155 of 164 results Aug 30, 1993 Sep 23, 2025
Lead 1030 Inorganic Chemical 72 of 164 results Aug 30, 1993 Sep 23, 2025
Barium 1010 Inorganic Chemical 24 of 24 results Jan 29, 2002 Sep 16, 2025
TTHM 2950 Organic Chemical 13 of 22 results May 3, 2004 Sep 25, 2025
Chromium 1020 Inorganic Chemical 10 of 24 results Jan 29, 2002 Nov 6, 2018
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 7, 2011 Jul 10, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 23 results Jun 28, 2007 Sep 25, 2025
Nickel 1036 Inorganic Chemical 8 of 24 results Jan 12, 2004 Sep 16, 2025
Chloroform 2941 Organic Chemical 7 of 17 results Jun 28, 2007 Sep 25, 2025
Fluoride 1025 Inorganic Chemical 7 of 24 results Sep 8, 2003 Oct 29, 2024
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 23, 2019 Oct 29, 2024
Dichloroacetic Acid 2451 Organic Chemical 4 of 17 results Sep 6, 2017 Sep 25, 2025
Bromodichloromethane 2943 Organic Chemical 4 of 17 results Sep 6, 2017 Sep 25, 2025
Dibromochloromethane 2944 Organic Chemical 3 of 17 results Mar 27, 2024 Sep 25, 2025
Dibromoacetic Acid 2454 Organic Chemical 2 of 17 results Dec 18, 2024 Sep 25, 2025
Bromoform 2942 Organic Chemical 2 of 17 results Dec 18, 2024 Sep 25, 2025
Trichloroacetic Acid 2452 Organic Chemical 2 of 17 results Sep 6, 2017 Dec 18, 2024
Arsenic 1005 Inorganic Chemical 2 of 24 results Sep 8, 2003 Apr 1, 2020
Monobromoacetic Acid 2453 Organic Chemical 2 of 17 results Jul 15, 2008 Apr 17, 2019
Cyanide 1024 Inorganic Chemical 2 of 22 results Jan 18, 2006 Apr 18, 2011
Selenium 1045 Inorganic Chemical 2 of 24 results Sep 8, 2003 Jan 10, 2005
Sulfate 1055 Inorganic Chemical 2 of 4 results Jan 12, 2004 Jan 12, 2004
Monochloroacetic Acid 2450 Organic Chemical 1 of 17 results Apr 17, 2019 Apr 17, 2019
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 43 results May 5, 2004 May 5, 2004
Nitrate 1040 Inorganic Chemical 1 of 43 results May 5, 2004 May 5, 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 51–60 of 327 samples, newest first — collected January 27, 2021 to January 5, 2022. The summary above covers all 327.

16 results from the 10 samples listed here: 4 detected, 12 not detected. Across the whole record it is 351 of 1,293. 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 Town of McCool, every result from 51 to 60 of 327 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 5, 2022 14:00
Sampling point
TF104
Sample type
Routine
Lab sample
NI-220106-020
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 14:00, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 14:00, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 14:00, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Jan 5, 2022 13:40
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-220106-012
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 13:40, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 13:40, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 5, 2022 13:40, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Jun 2, 2021 13:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-210603-010
Laboratory
MSDH Lab
2.75 ug/l , sample collected Jun 2, 2021 13:10, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jun 2, 2021 13:04
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210603-012
Laboratory
MSDH Lab
3.81 ug/l , sample collected Jun 2, 2021 13:04, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Apr 20, 2021 12:20
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
RU-210421-013
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 20, 2021 12:20, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jan 1, 2013 – Dec 31, 2021
Collected
Apr 20, 2021 12:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-210421-028
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 20, 2021 12:30, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Feb 23, 2021 12:55
Sampling point
TF104
Sample type
Routine
Lab sample
CN-210224-004
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 23, 2021 12:55, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2019 – Dec 31, 2021
Collected
Jan 27, 2021 13:38
Sampling point
TF104
Sample type
Routine
Lab sample
NA-210128-004
Laboratory
MSDH Lab
40.6 mg/l , sample collected Jan 27, 2021 13:38, sampling point TF104 Sodium 1052 EPA method 200.7 Not recorded
Collected
Jan 27, 2021 13:25
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NA-210128-005
Laboratory
MSDH Lab
41.2 mg/l , sample collected Jan 27, 2021 13:25, sampling point TF103 Sodium 1052 EPA method 200.7 Not recorded
Collected
Jan 27, 2021 13:38
Sampling point
TF104
Sample type
Routine
Lab sample
NI-210128-006
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 27, 2021 13:38, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 27, 2021 13:38, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 27, 2021 13:38, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021

Routine (10).