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
MS0710001 , Town of Belmont
17 of the 57 analytes this system has been tested for have been detected at least once, across 319 samples on record.
The other 40 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 319 samples on record, detections range from October 29, 2003 to November 18, 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 | 226 of 229 results | Aug 16, 2007 | Aug 25, 2025 |
| Lead 1030 | Inorganic Chemical | 116 of 229 results | Aug 16, 2007 | Aug 25, 2025 |
| TTHM 2950 | Organic Chemical | 11 of 20 results | Aug 23, 2004 | Nov 18, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Oct 29, 2003 | Mar 31, 2025 |
| Nickel 1036 | Inorganic Chemical | 7 of 10 results | Oct 29, 2003 | Mar 31, 2025 |
| Chloroform 2941 | Organic Chemical | 6 of 15 results | Aug 22, 2016 | Nov 18, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 5 of 21 results | Sep 10, 2007 | Jul 8, 2024 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Dec 12, 2011 | Jul 17, 2012 |
| Chromium 1020 | Inorganic Chemical | 2 of 10 results | Oct 29, 2003 | Mar 31, 2025 |
| Sodium 1052 | Inorganic Chemical | 2 of 2 results | Sep 17, 2019 | Mar 27, 2023 |
| Bromodichloromethane 2943 | Organic Chemical | 1 of 15 results | Aug 21, 2025 | Aug 21, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 15 results | Oct 27, 2020 | Oct 27, 2020 |
| Nitrite 1041 | Inorganic Chemical | 1 of 21 results | May 18, 2020 | May 18, 2020 |
| Xylenes, Total 2955 | Organic Chemical | 1 of 7 results | Sep 6, 2016 | Sep 6, 2016 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 15 results | Aug 22, 2016 | Aug 22, 2016 |
| Selenium 1045 | Inorganic Chemical | 1 of 10 results | Mar 1, 2010 | Mar 1, 2010 |
| Cadmium 1015 | Inorganic Chemical | 1 of 10 results | Oct 29, 2003 | Oct 29, 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 201–210 of 319 samples, newest first — collected October 27, 2009 to June 28, 2010. The summary above covers all 319.
29 results from the 10 samples listed here: 17 detected, 12 not detected. Across the whole record it is 397 of 993. 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 |
|---|---|---|
|
||
| 0.266 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| 0.2279 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
| 0.0009 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| 0.009 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| 0.2683 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| 0.0124 mg/l , sample collected Jun 28, 2010, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 28, 2010, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| 0.0094 mg/l , sample collected Mar 1, 2010, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| 0.0005 mg/l , sample collected Mar 1, 2010, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| 0.0006 mg/l , sample collected Mar 1, 2010, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2008 – Dec 31, 2010 |
|
||
| 0.6416 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Oct 27, 2009, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
| 0.0163 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Oct 27, 2009, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
|
||
| 0.0873 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
| 0.0024 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
|
||
| 0.2422 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
| 0.0022 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
|
||
| 0.0881 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
| 0.001 mg/l , sample collected Oct 27, 2009, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2009 – Dec 31, 2009 |
-
- Collected
- Jun 28, 2010
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 100629-017PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.266 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 28, 2010
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 100629-016PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2279 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Jun 28, 2010
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 100629-015PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.009 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 28, 2010
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 100629-014PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2683 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 28, 2010
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 100629-013PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0124 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 1, 2010
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 100302-078IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Barium 1010 EPA method 200.8
- Result
- 0.0094 mg/l
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Fluoride 1025 EPA method 380-75WE
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Nickel 1036 EPA method 200.8
- Result
- 0.0005 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- 0.0006 mg/l
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
- Collected
- Oct 27, 2009
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 091028-046PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2009 – Dec 31, 2009
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.6416 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
Lead 1030 EPA method 200.8
- Result
- 0.0163 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Oct 27, 2009
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 091028-061PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2009 – Dec 31, 2009
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0873 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0024 mg/l
-
- Collected
- Oct 27, 2009
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 091028-060PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2009 – Dec 31, 2009
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2422 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0022 mg/l
-
- Collected
- Oct 27, 2009
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 091028-059PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2009 – Dec 31, 2009
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0881 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
Routine (10).