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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 441–450 of 450 samples, newest first — collected October 20, 2003 to March 10, 2004. The summary above covers all 450.

103 results from the 10 samples listed here: 13 detected, 90 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 Hamilton Water District, every result from 441 to 450 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
Mar 10, 2004
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
040311-011CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Mar 10, 2004, sampling point TF082 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Feb 23, 2004
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
040224-030VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF082 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Feb 23, 2004
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
040224-029VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF081 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Feb 23, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
040224-028VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 23, 2004, sampling point TF080 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Oct 20, 2003
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
031021-065CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 20, 2003
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
031021-063CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 20, 2003
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
031021-056IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Arsenic 1005 EPA method 200.8 Not recorded
0.022 mg/l , sample collected Oct 20, 2003, sampling point TF082 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Cadmium 1015 EPA method 200.8 Not recorded
0.002 mg/l , sample collected Oct 20, 2003, sampling point TF082 Chromium 1020 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Mercury 1035 EPA method 200.8 Not recorded
0.006 mg/l , sample collected Oct 20, 2003, sampling point TF082 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Selenium 1045 EPA method 200.8 Not recorded
4.37 mg/l , sample collected Oct 20, 2003, sampling point TF082 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Antimony, Total 1074 EPA method 200.8 Not recorded
0.0001 mg/l , sample collected Oct 20, 2003, sampling point TF082 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF082 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 20, 2003
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
031021-055IN
Laboratory
MSDH Lab
0.001 mg/l , sample collected Oct 20, 2003, sampling point TF080 Arsenic 1005 EPA method 200.8 Not recorded
0.089 mg/l , sample collected Oct 20, 2003, sampling point TF080 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Cadmium 1015 EPA method 200.8 Not recorded
0.003 mg/l , sample collected Oct 20, 2003, sampling point TF080 Chromium 1020 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Selenium 1045 EPA method 200.8 Not recorded
5.66 mg/l , sample collected Oct 20, 2003, sampling point TF080 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 20, 2003
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
031021-054IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.023 mg/l , sample collected Oct 20, 2003, sampling point TF081 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 20, 2003, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.001 mg/l , sample collected Oct 20, 2003, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF081 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 20, 2003, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
0.008 mg/l , sample collected Oct 20, 2003, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
3.73 mg/l , sample collected Oct 20, 2003, sampling point TF081 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF081 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 20, 2003, sampling point TF081 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 20, 2003, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004
Collected
Oct 20, 2003
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
031021-052CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 20, 2003, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004

Routine (10).