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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

MS0480007 , Hamilton Water District

20 of the 57 analytes this system has been tested for have been detected at least once, across 450 samples on record.

The other 37 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 450 samples on record, detections range from October 20, 2003 to September 22, 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 Hamilton Water District, 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 280 of 283 results Sep 5, 2007 Jul 31, 2024
Lead 1030 Inorganic Chemical 59 of 283 results Sep 5, 2007 Jul 20, 2021
Barium 1010 Inorganic Chemical 21 of 21 results Oct 20, 2003 Mar 10, 2025
Nickel 1036 Inorganic Chemical 18 of 21 results Oct 20, 2003 Mar 10, 2025
TTHM 2950 Organic Chemical 14 of 17 results Aug 29, 2007 Sep 22, 2025
Chloroform 2941 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Bromodichloromethane 2943 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Dibromochloromethane 2944 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Chromium 1020 Inorganic Chemical 9 of 21 results Oct 20, 2003 Feb 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 20 results Jul 8, 2010 May 22, 2024
Dichloroacetic Acid 2451 Organic Chemical 6 of 15 results Jul 8, 2010 Sep 22, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 16, 2019 Feb 25, 2025
Sulfate 1055 Inorganic Chemical 6 of 6 results Oct 20, 2003 Mar 10, 2004
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Mar 12, 2012 Oct 11, 2012
Beryllium, Total 1075 Inorganic Chemical 5 of 21 results Oct 20, 2003 Jan 13, 2010
Bromoform 2942 Organic Chemical 1 of 13 results Sep 22, 2025 Sep 22, 2025
Fluoride 1025 Inorganic Chemical 1 of 21 results Mar 10, 2025 Mar 10, 2025
Selenium 1045 Inorganic Chemical 1 of 21 results Jan 13, 2010 Jan 13, 2010
Thallium, Total 1085 Inorganic Chemical 1 of 21 results Jan 13, 2010 Jan 13, 2010
Arsenic 1005 Inorganic Chemical 1 of 21 results Oct 20, 2003 Oct 20, 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 41–50 of 450 samples, newest first — collected May 18, 2022 to June 28, 2023. The summary above covers all 450.

64 results from the 10 samples listed here: 4 detected, 60 not detected. Across the whole record it is 472 of 1,593. 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 Hamilton Water District, every result from 41 to 50 of 450 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
Jun 28, 2023 13:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-230629-001
Laboratory
MSDH Lab
3.47 ug/l , sample collected Jun 28, 2023 13:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Jun 28, 2023 12:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-230629-001
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 28, 2023 12:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Mar 1, 2023 10:00
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
NI-230302-011
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 10:00, sampling point TF082 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 10:00, sampling point TF082 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 10:00, sampling point TF082 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Mar 1, 2023 09:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-230302-010
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 09:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 09:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2023 09:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2023 – Dec 31, 2023
Collected
Nov 28, 2022 10:30
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
VO-221129-047
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 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 Nov 28, 2022 10:30, sampling point TF082 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 10:30, sampling point TF082 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Nov 28, 2022 09:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
VO-221129-046
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 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 Nov 28, 2022 09:30, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 28, 2022 09:30, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Sep 27, 2022 13:50
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-220928-026
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0602 mg/l , sample collected Sep 27, 2022 13:50, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 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 Sep 27, 2022 13:50, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
0.0015 mg/l , sample collected Sep 27, 2022 13:50, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 27, 2022 13:50, sampling point TF080 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 Sep 27, 2022 13:50, sampling point TF080 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 Sep 27, 2022 13:50, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Jun 7, 2022 11:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-220608-008
Laboratory
MSDH Lab
3.72 ug/l , sample collected Jun 7, 2022 11:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Jun 7, 2022 11:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-220608-008
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 7, 2022 11:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
May 18, 2022 09:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
CN-220519-042
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 18, 2022 09:00, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2020 – Dec 31, 2022

Routine (10).