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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

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.

Every analyte ever detected for Town of Belmont, 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 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 211–220 of 319 samples, newest first — collected October 27, 2009 to October 27, 2009. The summary above covers all 319.

20 results from the 10 samples listed here: 18 detected, 2 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.

Chemical and radiological sample results for Town of Belmont, every result from 211 to 220 of 319 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
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-058PB
Laboratory
MSDH Lab
1.5486 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0009 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-057PB
Laboratory
MSDH Lab
0.0481 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0008 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-056PB
Laboratory
MSDH Lab
0.2519 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-052PB
Laboratory
MSDH Lab
0.127 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0005 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-055PB
Laboratory
MSDH Lab
0.293 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-054PB
Laboratory
MSDH Lab
0.0611 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0015 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-053PB
Laboratory
MSDH Lab
0.9684 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0006 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-051PB
Laboratory
MSDH Lab
0.016 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0012 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-050PB
Laboratory
MSDH Lab
0.9078 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0011 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 27, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091028-049PB
Laboratory
MSDH Lab
0.0933 mg/l , sample collected Oct 27, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0005 mg/l , sample collected Oct 27, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009

Routine (10).