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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

MS0210003 , Town of McLain

20 of the 58 analytes this system has been tested for have been detected at least once, across 321 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 321 samples on record, detections range from November 17, 1993 to February 10, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 McLain, 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
Lead 1030 Inorganic Chemical 130 of 181 results Nov 17, 1993 Sep 4, 2024
Copper, Free 1022 Inorganic Chemical 124 of 181 results Nov 17, 1993 Sep 4, 2024
Barium 1010 Inorganic Chemical 20 of 20 results May 21, 2002 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 20 of 20 results May 21, 2002 Feb 3, 2025
Arsenic 1005 Inorganic Chemical 18 of 20 results May 21, 2002 Feb 3, 2025
Chromium 1020 Inorganic Chemical 10 of 20 results May 21, 2002 Feb 3, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 13, 2011 Jul 11, 2012
Nickel 1036 Inorganic Chemical 8 of 20 results Feb 2, 2004 Feb 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 9 results Jul 30, 2007 Feb 10, 2025
Sodium 1052 Inorganic Chemical 5 of 5 results Oct 6, 2019 Jan 29, 2024
TTHM 2950 Organic Chemical 5 of 8 results May 26, 2004 Sep 26, 2022
Dichloroacetic Acid 2451 Organic Chemical 4 of 5 results Sep 15, 2008 Jul 24, 2018
Sulfate 1055 Inorganic Chemical 4 of 4 results May 21, 2002 Feb 2, 2004
Chloroform 2941 Organic Chemical 3 of 5 results Jul 30, 2007 Jul 24, 2018
Bromodichloromethane 2943 Organic Chemical 3 of 5 results Jul 30, 2007 Jul 24, 2018
Dibromochloromethane 2944 Organic Chemical 3 of 5 results Jul 30, 2007 Jul 24, 2018
Antimony, Total 1074 Inorganic Chemical 1 of 20 results Oct 15, 2018 Oct 15, 2018
Monochloroacetic Acid 2450 Organic Chemical 1 of 5 results Jul 24, 2018 Jul 24, 2018
Trichloroacetic Acid 2452 Organic Chemical 1 of 5 results Jul 24, 2018 Jul 24, 2018
Cyanide 1024 Inorganic Chemical 1 of 20 results Jul 30, 2014 Jul 30, 2014

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The 8 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

32 results from the 8 samples listed here: 10 detected, 22 not detected. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 1 sampling point below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Town of McLain, every result from the 8 samples on record, 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
Jun 16, 2025 14:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-250617-001
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 16, 2025 14:15, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Jun 16, 2025 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250617-002
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 16, 2025 14:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Feb 10, 2025 12:55
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250211-014
Laboratory
MSDH Lab
11.9 ug/l , sample collected Feb 10, 2025 12:55, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 10, 2025 12:55
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250211-014
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 10, 2025 12:55, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 3, 2025 11:25
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250204-040
Laboratory
MSDH Lab
0.0015 mg/l , sample collected Feb 3, 2025 11:25, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0093 mg/l , sample collected Feb 3, 2025 11:25, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0012 mg/l , sample collected Feb 3, 2025 11:25, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.29 mg/l , sample collected Feb 3, 2025 11:25, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0007 mg/l , sample collected Feb 3, 2025 11:25, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:25, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 3, 2025 11:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250204-039
Laboratory
MSDH Lab
0.0013 mg/l , sample collected Feb 3, 2025 11:05, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0059 mg/l , sample collected Feb 3, 2025 11:05, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0006 mg/l , sample collected Feb 3, 2025 11:05, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.162 mg/l , sample collected Feb 3, 2025 11:05, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:05, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 3, 2025 11:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-250204-050
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 3, 2025 11:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250204-049
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:20, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:20, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 11:20, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025

Routine (8).