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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

MS0060011 , Lamont Water Corporation

17 of the 58 analytes this system has been tested for have been detected at least once, across 165 samples on record.

The other 41 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 165 samples on record, detections range from November 30, 1993 to June 2, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 Lamont Water Corporation, 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 53 of 82 results Nov 30, 1993 Jun 2, 2025
Lead 1030 Inorganic Chemical 40 of 82 results Nov 30, 1993 Jun 2, 2025
Barium 1010 Inorganic Chemical 14 of 14 results Jan 29, 2002 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 14 of 14 results Jan 29, 2002 Jan 13, 2025
Nitrite 1041 Inorganic Chemical 8 of 22 results Jun 7, 2006 Jan 13, 2025
Chromium 1020 Inorganic Chemical 7 of 14 results Jan 29, 2002 Jan 13, 2025
Selenium 1045 Inorganic Chemical 4 of 14 results Jan 12, 2004 Mar 12, 2008
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 16, 2019 Nov 4, 2024
Nickel 1036 Inorganic Chemical 3 of 14 results Mar 12, 2008 May 2, 2022
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 8 results Jun 27, 2007 Aug 4, 2014
Trichloroacetic Acid 2452 Organic Chemical 2 of 4 results Jul 14, 2011 Aug 4, 2014
Gross Alpha Particle Activity 4109 Radionuclide 2 of 4 results Jun 25, 2012 Sep 19, 2012
TTHM 2950 Organic Chemical 2 of 8 results Jun 27, 2007 Jul 15, 2008
Arsenic 1005 Inorganic Chemical 1 of 14 results Jan 13, 2025 Jan 13, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 22 results Jan 20, 2021 Jan 20, 2021
Dichloroacetic Acid 2451 Organic Chemical 1 of 4 results Jul 14, 2011 Jul 14, 2011
Cadmium 1015 Inorganic Chemical 1 of 14 results Feb 14, 2005 Feb 14, 2005

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 1–10 of 11 samples, newest first — collected January 13, 2025 to June 2, 2025. The summary above covers all 11.

27 results from the 10 samples listed here: 14 detected, 13 not detected. Across the whole record it is 159 of 721. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 6 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Lamont Water Corporation, every result from 1 to 10 of 11 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
Jun 2, 2025 14:45
Sampling point
LC002 Location withheld
Sample type
Routine
Lab sample
PB-250603-015
Laboratory
MSDH Lab
0.146 mg/l , sample collected Jun 2, 2025 14:45, sampling point LC002 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.5 ug/l , sample collected Jun 2, 2025 14:45, sampling point LC002 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 2, 2025 14:35
Sampling point
LC007 Location withheld
Sample type
Routine
Lab sample
PB-250603-014
Laboratory
MSDH Lab
0.0295 mg/l , sample collected Jun 2, 2025 14:35, sampling point LC007 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 2, 2025 14:35, sampling point LC007 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 2, 2025 14:20
Sampling point
LC001 Location withheld
Sample type
Routine
Lab sample
PB-250603-013
Laboratory
MSDH Lab
0.0438 mg/l , sample collected Jun 2, 2025 14:20, sampling point LC001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.7 ug/l , sample collected Jun 2, 2025 14:20, sampling point LC001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 2, 2025 14:00
Sampling point
LC003 Location withheld
Sample type
Routine
Lab sample
PB-250603-012
Laboratory
MSDH Lab
0.0613 mg/l , sample collected Jun 2, 2025 14:00, sampling point LC003 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
5 ug/l , sample collected Jun 2, 2025 14:00, sampling point LC003 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 2, 2025 13:48
Sampling point
LC004 Location withheld
Sample type
Routine
Lab sample
PB-250603-011
Laboratory
MSDH Lab
0.0287 mg/l , sample collected Jun 2, 2025 13:48, sampling point LC004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1.6 ug/l , sample collected Jun 2, 2025 13:48, sampling point LC004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
May 5, 2025 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250506-037
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 5, 2025 13:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Mar 3, 2025 13:43
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
HA-250304-012
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 13:43, sampling point SMD Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 3, 2025 13:35
Sampling point
SMD Location withheld
Sample type
Routine
Lab sample
TH-250304-012
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 3, 2025 13:35, sampling point SMD TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 13, 2025 00:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250114-037
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Jan 13, 2025 00:40, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0051 mg/l , sample collected Jan 13, 2025 00:40, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.00242 mg/l , sample collected Jan 13, 2025 00:40, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.345 mg/l , sample collected Jan 13, 2025 00:40, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 00:40, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 13, 2025 12:52
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250114-018
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 12:52, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 12:52, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
0.0318 mg/l , sample collected Jan 13, 2025 12:52, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025

Routine (10).