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.
| 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 111–120 of 450 samples, newest first — collected June 6, 2017 to June 5, 2018. The summary above covers all 450.
22 results from the 10 samples listed here: 10 detected, 12 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0086 mg/l , sample collected Jun 5, 2018 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 5, 2018 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2018 |
|
||
| 0.0443 mg/l , sample collected Jun 5, 2018 02:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 5, 2018 02:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2018 – Dec 31, 2018 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:45, sampling point TF082 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:45, sampling point TF082 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:45, sampling point TF082 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:00, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:00, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 6, 2018 09:00, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
|
||
| 0.05 mg/l , sample collected Jun 6, 2017 06:13, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 6, 2017 06:13, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
|
||
| 0.0585 mg/l , sample collected Jun 6, 2017 05:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 6, 2017 05:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
|
||
| 0.0143 mg/l , sample collected Jun 6, 2017 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| 0.0007 mg/l , sample collected Jun 6, 2017 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
|
||
| 0.0666 mg/l , sample collected Jun 6, 2017 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 6, 2017 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
|
||
| 0.0622 mg/l , sample collected Jun 6, 2017, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| 0.001 mg/l , sample collected Jun 6, 2017, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
|
||
| 0.006 mg/l , sample collected Jun 6, 2017 06:50, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 6, 2017 06:50, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Dec 31, 2017 |
-
- Collected
- Jun 5, 2018 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180607-072PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0086 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 5, 2018 02:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180607-071PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0443 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 6, 2018 09:45
- Sampling point
- TF082 Treatment Plant T082
- Sample type
- Routine
- Lab sample
- 180307-024NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 6, 2018 09:00
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 180307-023NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jun 6, 2017 06:13
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-088PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.05 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 6, 2017 05:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-087PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0585 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 6, 2017 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-086PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0143 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 6, 2017 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-085PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0666 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 6, 2017
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-084PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0622 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Jun 6, 2017 06:50
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170608-083PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.006 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).