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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 311–320 of 327 samples, newest first — collected August 30, 1993 to August 30, 1993. The summary above covers all 327.

20 results from the 10 samples listed here: 14 detected, 6 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 311 to 320 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
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-038L
Laboratory
MSDH Lab
0.2 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-037L
Laboratory
MSDH Lab
0.269 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-036L
Laboratory
MSDH Lab
0.166 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-035L
Laboratory
MSDH Lab
0.217 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-034L
Laboratory
MSDH Lab
0.128 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-033L
Laboratory
MSDH Lab
0.363 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-032L
Laboratory
MSDH Lab
0.25 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-031L
Laboratory
MSDH Lab
0.502 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.006 mg/l , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-030L
Laboratory
MSDH Lab
0.139 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 30, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930831-029L
Laboratory
MSDH Lab
0.284 mg/l , sample collected Aug 30, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 30, 1993, sampling point DS000 Lead 1030 Not recorded

Routine (10).