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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

MS0370011 , West Lamar Water Assn #1

30 of the 60 analytes this system has been tested for have been detected at least once, across 750 samples on record.

The other 30 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 750 samples on record, detections range from September 29, 2003 to July 6, 2026. 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 West Lamar Water Assn #1, 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 240 of 240 results Jun 24, 2004 Jun 25, 2024
Lead 1030 Inorganic Chemical 122 of 240 results Jun 24, 2004 Jun 25, 2024
Barium 1010 Inorganic Chemical 54 of 54 results Sep 29, 2003 Jul 6, 2026
Fluoride 1025 Inorganic Chemical 54 of 54 results Sep 29, 2003 Jul 6, 2026
TTHM 2950 Organic Chemical 48 of 55 results Mar 10, 2004 Jun 24, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 40 of 54 results Mar 21, 2006 Apr 22, 2025
Xylenes, Total 2955 Organic Chemical 36 of 135 results Oct 31, 2007 Jul 15, 2015
Chloroform 2941 Organic Chemical 34 of 35 results Aug 3, 2006 Jun 24, 2026
Chromium 1020 Inorganic Chemical 29 of 54 results Sep 29, 2003 Apr 20, 2020
Dichloroacetic Acid 2451 Organic Chemical 26 of 32 results Jul 21, 2008 Dec 14, 2020
Trichloroacetic Acid 2452 Organic Chemical 26 of 32 results Aug 26, 2009 Dec 14, 2020
Bromodichloromethane 2943 Organic Chemical 22 of 35 results Jul 21, 2008 Jun 24, 2026
Ethylbenzene 2992 Organic Chemical 14 of 135 results Mar 4, 2009 Apr 21, 2010
Sodium 1052 Inorganic Chemical 11 of 11 results Feb 16, 2022 Feb 18, 2025
Nickel 1036 Inorganic Chemical 7 of 49 results Mar 23, 2005 Mar 31, 2014
Combined Radium (-226 & -228) 4010 Radionuclide 6 of 27 results Feb 16, 2009 May 20, 2019
Monochloroacetic Acid 2450 Organic Chemical 6 of 32 results Jun 9, 2014 Jun 11, 2018
Sulfate 1055 Inorganic Chemical 6 of 6 results Sep 29, 2003 Mar 1, 2004
Monobromoacetic Acid 2453 Organic Chemical 5 of 32 results Jun 28, 2016 Dec 14, 2020
Radium-226 4020 Radionuclide 5 of 27 results Jun 23, 2009 May 20, 2019
Radium-228 4030 Radionuclide 5 of 27 results Feb 16, 2009 May 20, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 13 results Mar 5, 2012 Oct 4, 2012
Arsenic 1005 Inorganic Chemical 4 of 54 results Dec 12, 2005 Mar 31, 2014
Gross Alpha Particle Activity 4109 Radionuclide 3 of 16 results Nov 23, 2009 Sep 12, 2012
Gross Beta Particle Activity 4100 Radionuclide 3 of 3 results Sep 30, 2009 Mar 10, 2010
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 14 results Nov 23, 2009 Mar 10, 2010
Mercury 1035 Inorganic Chemical 2 of 54 results Mar 23, 2005 Mar 23, 2005
Dibromochloromethane 2944 Organic Chemical 1 of 35 results Aug 26, 2009 Aug 26, 2009
Cadmium 1015 Inorganic Chemical 1 of 54 results Dec 12, 2005 Dec 12, 2005
Selenium 1045 Inorganic Chemical 1 of 54 results Dec 12, 2005 Dec 12, 2005

Showing samples collected between September 26, 2024 and September 26, 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 21–30 of 31 samples, newest first — collected January 28, 2025 to February 25, 2025. The summary above covers all 31.

60 results from the 10 samples listed here: 12 detected, 48 not detected. Across the whole record it is 818 of 4,862. 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 West Lamar Water Assn #1, every result from 21 to 30 of 31 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
Feb 25, 2025 11:20
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
IN-250226-030
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0015 mg/l , sample collected Feb 25, 2025 11:20, sampling point TF106 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.238 mg/l , sample collected Feb 25, 2025 11:20, sampling point TF106 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 Feb 25, 2025 11:20, sampling point TF106 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 11:20, sampling point TF106 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 Feb 25, 2025 11:20, sampling point TF106 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 Feb 25, 2025 11:20, sampling point TF106 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 10:25
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
IN-250226-029
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0015 mg/l , sample collected Feb 25, 2025 10:25, sampling point TF105 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.169 mg/l , sample collected Feb 25, 2025 10:25, sampling point TF105 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 Feb 25, 2025 10:25, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:25, sampling point TF105 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 Feb 25, 2025 10:25, sampling point TF105 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 Feb 25, 2025 10:25, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 10:00
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
IN-250226-028
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0057 mg/l , sample collected Feb 25, 2025 10:00, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.227 mg/l , sample collected Feb 25, 2025 10:00, sampling point TF104 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 Feb 25, 2025 10:00, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 10:00, sampling point TF104 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 Feb 25, 2025 10:00, sampling point TF104 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 Feb 25, 2025 10:00, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 11:40
Sampling point
TF109
Sample type
Routine
Lab sample
NA-250219-019
Laboratory
MSDH Lab
64.8 mg/l , sample collected Feb 18, 2025 11:40, sampling point TF109 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 10:55
Sampling point
TF108 TF108
Sample type
Routine
Lab sample
NA-250219-015
Laboratory
MSDH Lab
38.2 mg/l , sample collected Feb 18, 2025 10:55, sampling point TF108 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 11:20
Sampling point
TF107
Sample type
Routine
Lab sample
NA-250219-016
Laboratory
MSDH Lab
66.9 mg/l , sample collected Feb 18, 2025 11:20, sampling point TF107 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 11:59
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
NA-250219-017
Laboratory
MSDH Lab
64.5 mg/l , sample collected Feb 18, 2025 11:59, sampling point TF106 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 10:30
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
NA-250219-014
Laboratory
MSDH Lab
56.4 mg/l , sample collected Feb 18, 2025 10:30, sampling point TF105 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 18, 2025 10:10
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
NA-250219-018
Laboratory
MSDH Lab
64.8 mg/l , sample collected Feb 18, 2025 10:10, sampling point TF104 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 28, 2025 13:30
Sampling point
TF107
Sample type
Routine
Lab sample
VO-250129-008
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Dichloromethane 2964 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Benzene 2990 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Toluene 2991 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 13:30, sampling point TF107 Styrene 2996 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025

Routine (10).