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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.

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

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 51–60 of 165 samples, newest first — collected June 30, 2014 to August 30, 2016. The summary above covers all 165.

29 results from the 10 samples listed here: 14 detected, 15 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.

Chemical and radiological sample results for Lamont Water Corporation, every result from 51 to 60 of 165 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
Aug 30, 2016 19:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160831-036PB
Laboratory
MSDH Lab
0.3461 mg/l , sample collected Aug 30, 2016 19:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0009 mg/l , sample collected Aug 30, 2016 19:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Mar 14, 2016 15:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160315-010NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 14, 2016 15:10, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 14, 2016 15:10, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 14, 2016 15:10, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Jan 20, 2015 13:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150121-059NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:40, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:40, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 20, 2015 13:40, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Aug 4, 2014 01:15
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140805-017HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 01:15, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 01:15, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Aug 4, 2014 01:15, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 01:15, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 4, 2014 01:15, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Aug 4, 2014 01:15, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Aug 4, 2014 01:25
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140805-017TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 4, 2014 01:25, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 4, 2014 01:25, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 4, 2014 01:25, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 4, 2014 01:25, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Aug 4, 2014 01:25, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016
Collected
Jun 30, 2014 09:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140701-036PB
Laboratory
MSDH Lab
0.0135 mg/l , sample collected Jun 30, 2014 09:05, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0006 mg/l , sample collected Jun 30, 2014 09:05, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 30, 2014
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140701-035PB
Laboratory
MSDH Lab
0.048 mg/l , sample collected Jun 30, 2014, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jun 30, 2014, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 30, 2014 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140701-034PB
Laboratory
MSDH Lab
0.0924 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0028 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 30, 2014 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140701-033PB
Laboratory
MSDH Lab
0.0157 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0008 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 30, 2014 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140701-027PB
Laboratory
MSDH Lab
0.0102 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0008 mg/l , sample collected Jun 30, 2014 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).