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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 31–40 of 173 samples, newest first — collected November 16, 2021 to August 8, 2023. The summary above covers all 173.

45 results from the 10 samples listed here: 9 detected, 36 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.

Chemical and radiological sample results for McHenry Utility Assn, Inc, every result from 31 to 40 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 8, 2023 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-230811-057
Laboratory
MSDH Lab
0.0122 mg/l , sample collected Aug 8, 2023 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2023 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Mar 13, 2023 12:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-230314-044
Laboratory
MSDH Lab
0.116 mg/l , sample collected Mar 13, 2023 12:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
0.116 mg/l , sample collected Mar 13, 2023 12:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2023 12:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Dec 8, 2022 07:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-221209-007
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0117 mg/l , sample collected Dec 8, 2022 07:30, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.582 mg/l , sample collected Dec 8, 2022 07:30, sampling point TF102 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Dec 8, 2022 07:30, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Oct 17, 2022 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-221018-021
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 17, 2022 13:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Sep 26, 2022 12:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-220927-019
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 26, 2022 12:15, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022
Collected
Jun 28, 2022 12:40
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-220629-009
Laboratory
MSDH Lab
2.62 ug/l , sample collected Jun 28, 2022 12:40, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Jun 28, 2022 12:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-220629-009
Laboratory
MSDH Lab
4.72 ug/l , sample collected Jun 28, 2022 12:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Mar 28, 2022 14:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-220329-026
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 14:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 14:00, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2022 14:00, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Nov 16, 2021 12:45
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-211117-015
Laboratory
MSDH Lab
14.6 ug/l , sample collected Nov 16, 2021 12:45, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Nov 16, 2021 12:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-211117-015
Laboratory
MSDH Lab
12.9 ug/l , sample collected Nov 16, 2021 12:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded

Routine (10).