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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 61–70 of 450 samples, newest first — collected July 20, 2021 to July 20, 2021. The summary above covers all 450.

20 results from the 10 samples listed here: 11 detected, 9 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 61 to 70 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
Jul 20, 2021 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-054
Laboratory
MSDH Lab
0.104 mg/l , sample collected Jul 20, 2021 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-049
Laboratory
MSDH Lab
0.0074 mg/l , sample collected Jul 20, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 03:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-050
Laboratory
MSDH Lab
0.0034 mg/l , sample collected Jul 20, 2021 03:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 03:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-046
Laboratory
MSDH Lab
0.0301 mg/l , sample collected Jul 20, 2021 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-093
Laboratory
MSDH Lab
0.0281 mg/l , sample collected Jul 20, 2021 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1.2 ug/l , sample collected Jul 20, 2021 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 04:16
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-091
Laboratory
MSDH Lab
0.008 mg/l , sample collected Jul 20, 2021 04:16, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 04:16, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-084
Laboratory
MSDH Lab
0.0041 mg/l , sample collected Jul 20, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-088
Laboratory
MSDH Lab
0.0162 mg/l , sample collected Jul 20, 2021 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 06:39
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-048
Laboratory
MSDH Lab
0.0036 mg/l , sample collected Jul 20, 2021 06:39, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 06:39, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 20, 2021 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-210722-051
Laboratory
MSDH Lab
0.012 mg/l , sample collected Jul 20, 2021 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).