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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

MS0600016 , West Lambert Water Association

9 of the 13 analytes this system has been tested for have been detected at least once, across 87 samples on record.

The other 4 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 87 samples on record, detections range from August 9, 2004 to September 19, 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 West Lambert Water Association, 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 67 of 67 results Jul 10, 2007 Sep 19, 2025
Lead 1030 Inorganic Chemical 33 of 67 results Jul 10, 2007 Sep 18, 2025
TTHM 2950 Organic Chemical 9 of 10 results Aug 9, 2004 Sep 16, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 10 results Jun 18, 2007 Sep 16, 2025
Chloroform 2941 Organic Chemical 3 of 6 results Sep 2, 2009 Sep 11, 2017
Dichloroacetic Acid 2451 Organic Chemical 3 of 5 results Sep 2, 2009 Aug 21, 2017
Bromodichloromethane 2943 Organic Chemical 2 of 6 results Sep 2, 2009 Sep 11, 2017
Dibromochloromethane 2944 Organic Chemical 2 of 6 results Sep 2, 2009 Sep 11, 2017
Trichloroacetic Acid 2452 Organic Chemical 2 of 5 results Sep 2, 2009 Jul 21, 2014

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 11–20 of 87 samples, newest first — collected June 20, 2022 to September 25, 2024. The summary above covers all 87.

18 results from the 10 samples listed here: 11 detected, 7 not detected. Across the whole record it is 128 of 203. 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 5 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 West Lambert Water Association, every result from 11 to 20 of 87 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
Sep 25, 2024 17:30
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-241001-068
Laboratory
MSDH Lab
0.0021 mg/l , sample collected Sep 25, 2024 17:30, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2024 17:30, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
Collected
Sep 25, 2024 16:30
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-241001-067
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Sep 25, 2024 16:30, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2024 16:30, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024
Collected
Jun 22, 2023 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-230627-004
Laboratory
MSDH Lab
0.0026 mg/l , sample collected Jun 22, 2023 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2023 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Collected
Jun 22, 2023 12:00
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-230627-003
Laboratory
MSDH Lab
0.002 mg/l , sample collected Jun 22, 2023 12:00, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2023 12:00, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Collected
Jun 22, 2023 06:15
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-230627-002
Laboratory
MSDH Lab
0.0029 mg/l , sample collected Jun 22, 2023 06:15, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2023 06:15, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Collected
Jun 21, 2023 18:50
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-230627-005
Laboratory
MSDH Lab
0.0022 mg/l , sample collected Jun 21, 2023 18:50, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 21, 2023 18:50, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Collected
Jun 21, 2023 18:45
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-230627-001
Laboratory
MSDH Lab
0.0052 mg/l , sample collected Jun 21, 2023 18:45, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
0.9 ug/l , sample collected Jun 21, 2023 18:45, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2023
Collected
Dec 19, 2022 12:20
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-221220-018
Laboratory
MSDH Lab
1.98 ug/l , sample collected Dec 19, 2022 12:20, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2022 – Dec 31, 2024
Collected
Dec 19, 2022 12:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-221220-028
Laboratory
MSDH Lab
10.5 ug/l , sample collected Dec 19, 2022 12:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2022 – Dec 31, 2024
Collected
Jun 20, 2022 06:50
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-220622-006
Laboratory
MSDH Lab
0.0023 mg/l , sample collected Jun 20, 2022 06:50, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 20, 2022 06:50, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2022

Routine (10).