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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

MS0660002 , McHenry Utility Assn, Inc

21 of the 54 analytes this system has been tested for have been detected at least once, across 173 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 173 samples on record, detections range from October 27, 2003 to February 11, 2026. 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 McHenry Utility Assn, 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 60 of 60 results Aug 23, 2007 Aug 10, 2023
Lead 1030 Inorganic Chemical 34 of 60 results Aug 23, 2007 Aug 9, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 17 of 20 results Aug 16, 2004 Feb 11, 2026
TTHM 2950 Organic Chemical 16 of 21 results Aug 16, 2004 Feb 11, 2026
Barium 1010 Inorganic Chemical 15 of 15 results Oct 27, 2003 Mar 25, 2025
Fluoride 1025 Inorganic Chemical 15 of 15 results Oct 27, 2003 Mar 25, 2025
Chromium 1020 Inorganic Chemical 10 of 15 results Oct 27, 2003 May 15, 2019
Chloroform 2941 Organic Chemical 9 of 13 results Jun 20, 2011 Feb 11, 2026
Dichloroacetic Acid 2451 Organic Chemical 8 of 12 results Jun 20, 2011 Feb 11, 2026
Bromodichloromethane 2943 Organic Chemical 6 of 13 results Jun 20, 2011 Jun 27, 2024
Trichloroacetic Acid 2452 Organic Chemical 5 of 12 results Jun 20, 2011 Jun 27, 2024
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 27, 2003 Mar 29, 2004
Dibromochloromethane 2944 Organic Chemical 2 of 13 results May 15, 2019 Mar 5, 2024
Sodium 1052 Inorganic Chemical 2 of 2 results Sep 19, 2019 Dec 13, 2023
Monobromoacetic Acid 2453 Organic Chemical 2 of 12 results Jun 20, 2011 Oct 22, 2020
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 31 results Mar 13, 2023 Mar 13, 2023
Nitrate 1040 Inorganic Chemical 1 of 31 results Mar 13, 2023 Mar 13, 2023
Monochloroacetic Acid 2450 Organic Chemical 1 of 12 results Aug 15, 2017 Aug 15, 2017
Mercury 1035 Inorganic Chemical 1 of 15 results Dec 19, 2016 Dec 19, 2016
Nickel 1036 Inorganic Chemical 1 of 15 results May 22, 2013 May 22, 2013
Cadmium 1015 Inorganic Chemical 1 of 15 results Oct 27, 2003 Oct 27, 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 171–173 of 173 samples, newest first — collected October 27, 2003 to October 29, 2003. The summary above covers all 173.

25 results from the 3 samples listed here: 9 detected, 16 not detected. 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 McHenry Utility Assn, Inc, every result from 171 to 173 of 173 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
Oct 29, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031030-003CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 29, 2003, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 27, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031028-090IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.01 mg/l , sample collected Oct 27, 2003, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.003 mg/l , sample collected Oct 27, 2003, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.66 mg/l , sample collected Oct 27, 2003, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
6.78 mg/l , sample collected Oct 27, 2003, sampling point TF101 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Oct 27, 2003
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
031028-082IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Arsenic 1005 EPA method 200.8 Not recorded
0.009 mg/l , sample collected Oct 27, 2003, sampling point TF102 Barium 1010 EPA method 200.8 Not recorded
0.0001 mg/l , sample collected Oct 27, 2003, sampling point TF102 Cadmium 1015 EPA method 200.8 Not recorded
0.003 mg/l , sample collected Oct 27, 2003, sampling point TF102 Chromium 1020 EPA method 200.8 Not recorded
0.629 mg/l , sample collected Oct 27, 2003, sampling point TF102 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Selenium 1045 EPA method 200.8 Not recorded
7.12 mg/l , sample collected Oct 27, 2003, sampling point TF102 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2003, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Not recorded

Routine (3).