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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 11–20 of 173 samples, newest first — collected August 21, 2023 to August 20, 2024. The summary above covers all 173.

62 results from the 10 samples listed here: 23 detected, 39 not detected. Across the whole record it is 211 of 812. 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 2 sampling points 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 McHenry Utility Assn, Inc, every result from 11 to 20 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
Aug 20, 2024 11:15
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-117054-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2024 – Sep 30, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 20, 2024 11:15, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2024 – Sep 30, 2024
Collected
Jul 10, 2024 11:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-240711-005
Laboratory
MSDH Lab
8.58 ug/l , sample collected Jul 10, 2024 11:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Dec 31, 2024
Collected
Jul 10, 2024 11:25
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-240711-005
Laboratory
MSDH Lab
7.49 ug/l , sample collected Jul 10, 2024 11:25, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Dec 31, 2024
Collected
Jun 27, 2024 08:30
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-109835-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:30, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
6.9 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
1.3 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:30, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:30, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
8.2 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2024 – Jun 30, 2024
8.4 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:30, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
0.54 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:30, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
8.94 ug/l , sample collected Jun 27, 2024 08:30, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2024 – Jun 30, 2024
Collected
Jun 27, 2024 08:55
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-109835-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:55, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
6.7 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
1.3 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:55, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:55, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
8 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2024 – Jun 30, 2024
8.4 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:55, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
0.57 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:55, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
8.97 ug/l , sample collected Jun 27, 2024 08:55, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2024 – Jun 30, 2024
Collected
Apr 17, 2024 12:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-240418-001
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 17, 2024 12:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 17, 2024 12:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 17, 2024 12:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Mar 5, 2024 08:45
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-96223-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 08:45, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Mar 5, 2024 09:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-96223-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 09:45, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
4.5 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
5.4 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 09:45, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 09:45, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
9.9 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
15 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 5, 2024 09:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
3.4 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.72 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
19.12 ug/l , sample collected Mar 5, 2024 09:45, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Dec 13, 2023 11:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-231214-009
Laboratory
MSDH Lab
109 mg/l , sample collected Dec 13, 2023 11:30, sampling point TF102 Sodium 1052 EPA method 200.7 Not recorded
Collected
Aug 21, 2023 12:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230822-010
Laboratory
MSDH Lab
14.6 ug/l , sample collected Aug 21, 2023 12:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2023

Routine (10).