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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

MS0110003 , Hermanville Water Association

36 of the 59 analytes this system has been tested for have been detected at least once, across 708 samples on record.

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 708 samples on record, detections range from October 19, 1993 to September 28, 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 Hermanville Water Association, 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 144 of 180 results Oct 19, 1993 Sep 28, 2025
Lead 1030 Inorganic Chemical 118 of 180 results Oct 19, 1993 Sep 26, 2025
TTHM 2950 Organic Chemical 89 of 111 results Sep 13, 2004 Jul 26, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 85 of 113 results Sep 13, 2004 Jul 16, 2024
Chloroform 2941 Organic Chemical 62 of 73 results May 15, 2006 Sep 2, 2020
Bromodichloromethane 2943 Organic Chemical 55 of 73 results May 15, 2006 Sep 2, 2020
Dichloroacetic Acid 2451 Organic Chemical 47 of 67 results Mar 9, 2009 Sep 2, 2020
Trichloroacetic Acid 2452 Organic Chemical 36 of 67 results Mar 9, 2009 Sep 2, 2020
Barium 1010 Inorganic Chemical 31 of 31 results Mar 12, 2002 Jan 22, 2025
Fluoride 1025 Inorganic Chemical 31 of 31 results Mar 12, 2002 Jan 22, 2025
Xylenes, Total 2955 Organic Chemical 26 of 148 results Jul 14, 2004 Oct 16, 2013
Chromium 1020 Inorganic Chemical 23 of 31 results Jan 26, 2004 Jan 22, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 8, 2012 Oct 11, 2012
Monochloroacetic Acid 2450 Organic Chemical 14 of 67 results Sep 8, 2009 Sep 2, 2020
Nickel 1036 Inorganic Chemical 12 of 31 results Dec 12, 2005 Jan 22, 2025
Ethylbenzene 2992 Organic Chemical 10 of 148 results Jul 14, 2004 Oct 16, 2013
Nitrate-Nitrite 1038 Inorganic Chemical 9 of 64 results Jan 30, 2019 Feb 13, 2025
Nitrate 1040 Inorganic Chemical 9 of 64 results Jan 30, 2019 Feb 13, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Feb 9, 2021 Nov 4, 2024
Dibromochloromethane 2944 Organic Chemical 6 of 73 results Oct 31, 2012 Sep 2, 2020
Vinyl Chloride 2976 Organic Chemical 6 of 148 results Apr 14, 2008 Feb 24, 2020
Gross Alpha, Excl. Radon & U 4000 Radionuclide 5 of 6 results Mar 22, 2012 Jun 11, 2012
Selenium 1045 Inorganic Chemical 5 of 31 results Feb 14, 2005 Jan 25, 2006
Monobromoacetic Acid 2453 Organic Chemical 4 of 67 results Mar 13, 2013 Feb 24, 2020
Carbon Tetrachloride 2982 Organic Chemical 4 of 148 results Jun 26, 2017 May 2, 2018
Dibromoacetic Acid 2454 Organic Chemical 3 of 67 results Nov 20, 2018 Sep 2, 2020
Combined Uranium 4006 Radionuclide 3 of 18 results Jun 11, 2012 Jun 11, 2012
Gross Alpha Particle Activity 4109 Radionuclide 2 of 6 results Mar 22, 2012 Mar 23, 2012
Dichloromethane 2964 Organic Chemical 2 of 148 results Jun 2, 2009 Jun 2, 2009
Nitrite 1041 Inorganic Chemical 1 of 64 results Dec 21, 2020 Dec 21, 2020
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 21 results Jun 11, 2012 Jun 11, 2012
Radium-226 4020 Radionuclide 1 of 21 results Jun 11, 2012 Jun 11, 2012
Radium-228 4030 Radionuclide 1 of 21 results Jun 11, 2012 Jun 11, 2012
Cyanide 1024 Inorganic Chemical 1 of 28 results Dec 12, 2005 Dec 12, 2005
Arsenic 1005 Inorganic Chemical 1 of 31 results Feb 14, 2005 Feb 14, 2005
Sulfate 1055 Inorganic Chemical 1 of 4 results Mar 12, 2002 Mar 12, 2002

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 21–30 of 708 samples, newest first — collected October 22, 2024 to January 22, 2025. The summary above covers all 708.

30 results from the 10 samples listed here: 11 detected, 19 not detected. Across the whole record it is 869 of 5,002. 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 Hermanville Water Association, every result from 21 to 30 of 708 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
Jan 22, 2025 08:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250122-010
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 22, 2025 08:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0563 mg/l , sample collected Jan 22, 2025 08:30, 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 Jan 22, 2025 08:30, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0023 mg/l , sample collected Jan 22, 2025 08:30, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.139 mg/l , sample collected Jan 22, 2025 08:30, 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 Jan 22, 2025 08:30, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.002 mg/l , sample collected Jan 22, 2025 08:30, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 22, 2025 08:30, 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 Jan 22, 2025 08:30, 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 Jan 22, 2025 08:30, 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 Jan 22, 2025 08:30, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 22, 2025 09:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250122-009
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 22, 2025 09:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0556 mg/l , sample collected Jan 22, 2025 09:00, 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 Jan 22, 2025 09:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0023 mg/l , sample collected Jan 22, 2025 09:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.137 mg/l , sample collected Jan 22, 2025 09:00, 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 Jan 22, 2025 09:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.002 mg/l , sample collected Jan 22, 2025 09:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 22, 2025 09:00, 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 Jan 22, 2025 09:00, 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 Jan 22, 2025 09:00, 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 Jan 22, 2025 09:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Nov 4, 2024 13:45
Sampling point
TF103
Sample type
Routine
Lab sample
NA-241105-005
Laboratory
MSDH Lab
7.54 mg/l , sample collected Nov 4, 2024 13:45, sampling point TF103 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Nov 4, 2024 08:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-241105-004
Laboratory
MSDH Lab
7.61 mg/l , sample collected Nov 4, 2024 08:10, sampling point TF102 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Nov 4, 2024 08:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-241105-003
Laboratory
MSDH Lab
7.94 mg/l , sample collected Nov 4, 2024 08:00, sampling point TF101 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Nov 4, 2024 07:30
Sampling point
TF103
Sample type
Routine
Lab sample
CN-241104-001
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Nov 4, 2024 07:30, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2022 – Dec 31, 2024
Collected
Oct 22, 2024 07:40
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-241023-004
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 22, 2024 07:40, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Oct 22, 2024 07:02
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-241023-003
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 22, 2024 07:02, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Oct 22, 2024 07:40
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-241023-004
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 22, 2024 07:40, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 22, 2024 07:20
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-241023-003
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 22, 2024 07:20, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded

Routine (10).