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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

MS0260017 , Town of West

31 of the 62 analytes this system has been tested for have been detected at least once, across 429 samples on record.

The other 31 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 429 samples on record, detections range from July 8, 1993 to February 11, 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 West, 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 93 of 100 results Jul 8, 1993 Jul 10, 2023
Lead 1030 Inorganic Chemical 89 of 100 results Jul 8, 1993 Jul 10, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 51 of 71 results Aug 6, 2007 Oct 8, 2024
TTHM 2950 Organic Chemical 42 of 71 results Jun 7, 2004 Apr 16, 2024
Fluoride 1025 Inorganic Chemical 29 of 29 results Sep 17, 2003 Feb 11, 2025
Chloroform 2941 Organic Chemical 29 of 41 results Aug 6, 2007 Sep 19, 2018
Barium 1010 Inorganic Chemical 28 of 28 results Sep 17, 2003 Feb 11, 2025
Dichloroacetic Acid 2451 Organic Chemical 28 of 39 results Jan 31, 2008 Jun 6, 2018
Bromoform 2942 Organic Chemical 27 of 41 results Aug 6, 2007 Sep 19, 2018
Bromodichloromethane 2943 Organic Chemical 27 of 41 results Aug 6, 2007 Sep 19, 2018
Dibromochloromethane 2944 Organic Chemical 27 of 41 results Aug 6, 2007 Sep 19, 2018
Trichloroacetic Acid 2452 Organic Chemical 25 of 39 results Jan 31, 2008 Jun 6, 2018
Dibromoacetic Acid 2454 Organic Chemical 25 of 39 results Jan 31, 2008 Jun 6, 2018
Arsenic 1005 Inorganic Chemical 20 of 28 results Sep 17, 2003 May 16, 2022
Chromium 1020 Inorganic Chemical 17 of 28 results Sep 17, 2003 May 16, 2022
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 6, 2012 Oct 3, 2012
Selenium 1045 Inorganic Chemical 13 of 28 results Sep 17, 2003 Oct 15, 2019
Monochloroacetic Acid 2450 Organic Chemical 10 of 39 results Apr 28, 2008 Jun 6, 2018
Sodium 1052 Inorganic Chemical 9 of 9 results Sep 24, 2019 Feb 13, 2024
Monobromoacetic Acid 2453 Organic Chemical 8 of 39 results Aug 16, 2011 Aug 21, 2017
Nickel 1036 Inorganic Chemical 6 of 28 results Sep 17, 2003 Mar 9, 2015
Nitrite 1041 Inorganic Chemical 6 of 62 results Aug 8, 2005 Feb 21, 2011
Color 1905 Water Quality 2 of 2 results Nov 2, 2021 Nov 2, 2021
Calcium 1016 Inorganic Chemical 1 of 1 result Nov 2, 2021 Nov 2, 2021
Chloride 1017 Inorganic Chemical 1 of 1 result Nov 2, 2021 Nov 2, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 1 of 1 result Nov 2, 2021 Nov 2, 2021
Alkalinity, Total 1927 Water Quality 1 of 1 result Nov 2, 2021 Nov 2, 2021
Beryllium, Total 1075 Inorganic Chemical 1 of 28 results Mar 9, 2015 Mar 9, 2015
Dichloromethane 2964 Organic Chemical 1 of 35 results Aug 27, 2007 Aug 27, 2007
Carbon Tetrachloride 2982 Organic Chemical 1 of 35 results Oct 25, 2004 Oct 25, 2004
Sulfate 1055 Inorganic Chemical 1 of 7 results Sep 17, 2003 Sep 17, 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 91–100 of 429 samples, newest first — collected July 27, 2020 to March 2, 2021. The summary above covers all 429.

18 results from the 10 samples listed here: 9 detected, 9 not detected. Across the whole record it is 634 of 2,057. 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 1 sampling point 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 Town of West, every result from 91 to 100 of 429 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
Mar 2, 2021 14:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NA-210303-003
Laboratory
MSDH Lab
177 mg/l , sample collected Mar 2, 2021 14:05, sampling point TF103 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 2, 2021 14:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NA-210303-002
Laboratory
MSDH Lab
171 mg/l , sample collected Mar 2, 2021 14:30, sampling point TF102 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 2, 2021 13:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NA-210303-001
Laboratory
MSDH Lab
176 mg/l , sample collected Mar 2, 2021 13:40, sampling point TF101 Sodium 1052 EPA method 200.7 Not recorded
Collected
Mar 2, 2021 14:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-210303-004
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:05, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:05, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:05, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Mar 2, 2021 14:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-210303-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 14:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Mar 2, 2021 13:40
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-210303-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 13:40, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 13:40, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 2, 2021 13:40, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2021 – Dec 31, 2021
Collected
Jan 26, 2021 15:15
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
TH-210127-005
Laboratory
MSDH Lab
128 ug/l , sample collected Jan 26, 2021 15:15, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jan 26, 2021 15:15
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-210127-004
Laboratory
MSDH Lab
52.3 ug/l , sample collected Jan 26, 2021 15:15, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jul 28, 2020 11:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200729-069PB
Laboratory
MSDH Lab
0.0108 mg/l , sample collected Jul 28, 2020 11:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0021 mg/l , sample collected Jul 28, 2020 11:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jul 27, 2020 20:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200729-071PB
Laboratory
MSDH Lab
0.3547 mg/l , sample collected Jul 27, 2020 20:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.001 mg/l , sample collected Jul 27, 2020 20:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020

Routine (10).