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 141–150 of 429 samples, newest first — collected February 13, 2017 to May 15, 2017. The summary above covers all 429.

50 results from the 10 samples listed here: 41 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 2 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 Town of West, every result from 141 to 150 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 May 15, 2017 01:15 Sampling point SMT Location withheld Sample type Routine Lab sample 170516-002TH Laboratory MSDH Lab
11.1 ug/l , sample collected May 15, 2017 01:15, sampling point SMT	Chloroform 2941 EPA method 524.2	Not recorded
8.07 ug/l , sample collected May 15, 2017 01:15, sampling point SMT	Bromoform 2942 EPA method 524.2	Not recorded
12.8 ug/l , sample collected May 15, 2017 01:15, sampling point SMT	Bromodichloromethane 2943 EPA method 524.2	Not recorded
19.8 ug/l , sample collected May 15, 2017 01:15, sampling point SMT	Dibromochloromethane 2944 EPA method 524.2	Not recorded
51.8 ug/l , sample collected May 15, 2017 01:15, sampling point SMT	TTHM 2950	Apr 1, 2017 – Jun 30, 2017
Collected May 15, 2017 01:15 Sampling point SMH Location withheld Sample type Routine Lab sample 170516-001TH Laboratory MSDH Lab
10.7 ug/l , sample collected May 15, 2017 01:15, sampling point SMH	Chloroform 2941 EPA method 524.2	Not recorded
8.25 ug/l , sample collected May 15, 2017 01:15, sampling point SMH	Bromoform 2942 EPA method 524.2	Not recorded
12.4 ug/l , sample collected May 15, 2017 01:15, sampling point SMH	Bromodichloromethane 2943 EPA method 524.2	Not recorded
19.1 ug/l , sample collected May 15, 2017 01:15, sampling point SMH	Dibromochloromethane 2944 EPA method 524.2	Not recorded
50.5 ug/l , sample collected May 15, 2017 01:15, sampling point SMH	TTHM 2950	Apr 1, 2017 – Jun 30, 2017
Collected May 15, 2017 01:30 Sampling point SMT Location withheld Sample type Routine Lab sample 170516-002HA Laboratory MSDH Lab
0.005 mg/l , sample collected May 15, 2017 01:30, sampling point SMT	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.004 mg/l , sample collected May 15, 2017 01:30, sampling point SMT	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
0.005 mg/l , sample collected May 15, 2017 01:30, sampling point SMT	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:30, sampling point SMT	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
0.006 mg/l , sample collected May 15, 2017 01:30, sampling point SMT	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
0.02 mg/l , sample collected May 15, 2017 01:30, sampling point SMT	Total Haloacetic Acids (Haa5) 2456	Apr 1, 2017 – Jun 30, 2017
Collected May 15, 2017 01:30 Sampling point SMH Location withheld Sample type Routine Lab sample 170516-001HA Laboratory MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:30, sampling point SMH	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.004 mg/l , sample collected May 15, 2017 01:30, sampling point SMH	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
0.006 mg/l , sample collected May 15, 2017 01:30, sampling point SMH	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected May 15, 2017 01:30, sampling point SMH	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
0.006 mg/l , sample collected May 15, 2017 01:30, sampling point SMH	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
0.016 mg/l , sample collected May 15, 2017 01:30, sampling point SMH	Total Haloacetic Acids (Haa5) 2456	Apr 1, 2017 – Jun 30, 2017
Collected Feb 21, 2017 12:40 Sampling point SMT Location withheld Sample type Routine Lab sample 170222-008HA Laboratory MSDH Lab
0.005 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.004 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
0.007 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
0.001 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
0.005 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
0.022 mg/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Total Haloacetic Acids (Haa5) 2456	Jan 1, 2017 – Mar 31, 2017
Collected Feb 21, 2017 12:30 Sampling point SMH Location withheld Sample type Routine Lab sample 170222-007HA Laboratory MSDH Lab
0.005 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
0.004 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
0.008 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
0.001 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
0.005 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
0.023 mg/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Total Haloacetic Acids (Haa5) 2456	Jan 1, 2017 – Mar 31, 2017
Collected Feb 21, 2017 12:40 Sampling point SMT Location withheld Sample type Routine Lab sample 170222-008TH Laboratory MSDH Lab
13.5 ug/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Chloroform 2941 EPA method 524.2	Not recorded
2.87 ug/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Bromoform 2942 EPA method 524.2	Not recorded
13.9 ug/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Bromodichloromethane 2943 EPA method 524.2	Not recorded
13.7 ug/l , sample collected Feb 21, 2017 12:40, sampling point SMT	Dibromochloromethane 2944 EPA method 524.2	Not recorded
44 ug/l , sample collected Feb 21, 2017 12:40, sampling point SMT	TTHM 2950	Jan 1, 2017 – Mar 31, 2017
Collected Feb 21, 2017 12:30 Sampling point SMH Location withheld Sample type Routine Lab sample 170222-007TH Laboratory MSDH Lab
13.1 ug/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Chloroform 2941 EPA method 524.2	Not recorded
3.59 ug/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Bromoform 2942 EPA method 524.2	Not recorded
14 ug/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Bromodichloromethane 2943 EPA method 524.2	Not recorded
14.6 ug/l , sample collected Feb 21, 2017 12:30, sampling point SMH	Dibromochloromethane 2944 EPA method 524.2	Not recorded
45 ug/l , sample collected Feb 21, 2017 12:30, sampling point SMH	TTHM 2950	Jan 1, 2017 – Mar 31, 2017
Collected Feb 13, 2017 13:20 Sampling point TF103 Treatment Plant T103 Sample type Routine Lab sample 170214-024NI Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 13:20, sampling point TF103	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 13:20, sampling point TF103	Nitrate 1040 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 13:20, sampling point TF103	Nitrite 1041 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017
Collected Feb 13, 2017 12:50 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample 170214-023NI Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 12:50, sampling point TF102	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 12:50, sampling point TF102	Nitrate 1040 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2017 12:50, sampling point TF102	Nitrite 1041 EPA method QC10107041C	Jan 1, 2017 – Dec 31, 2017

Collected
May 15, 2017 01:15

Sampling point
SMT Location withheld

Sample type
Routine

Lab sample
170516-002TH

Laboratory
MSDH Lab
- Chloroform 2941 EPA method 524.2
  
  Result
  11.1 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  8.07 ug/l
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  12.8 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  19.8 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950
  
  Result
  51.8 ug/l
  
  Monitoring period
  Apr 1, 2017 – Jun 30, 2017
Collected
May 15, 2017 01:15

Sampling point
SMH Location withheld

Sample type
Routine

Lab sample
170516-001TH

Laboratory
MSDH Lab
- Chloroform 2941 EPA method 524.2
  
  Result
  10.7 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  8.25 ug/l
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  12.4 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  19.1 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950
  
  Result
  50.5 ug/l
  
  Monitoring period
  Apr 1, 2017 – Jun 30, 2017
Collected
May 15, 2017 01:30

Sampling point
SMT Location withheld

Sample type
Routine

Lab sample
170516-002HA

Laboratory
MSDH Lab
- Monochloroacetic Acid 2450 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Dichloroacetic Acid 2451 EPA method 552.2
  
  Result
  0.004 mg/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Monobromoacetic Acid 2453 EPA method 552.2
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dibromoacetic Acid 2454 EPA method 552.2
  
  Result
  0.006 mg/l
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456
  
  Result
  0.02 mg/l
  
  Monitoring period
  Apr 1, 2017 – Jun 30, 2017
Collected
May 15, 2017 01:30

Sampling point
SMH Location withheld

Sample type
Routine

Lab sample
170516-001HA

Laboratory
MSDH Lab
- Monochloroacetic Acid 2450 EPA method 552.2
  
  Result
  Not detected below 0.002 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dichloroacetic Acid 2451 EPA method 552.2
  
  Result
  0.004 mg/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  0.006 mg/l
  
  Monitoring period
  Not recorded
- Monobromoacetic Acid 2453 EPA method 552.2
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dibromoacetic Acid 2454 EPA method 552.2
  
  Result
  0.006 mg/l
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456
  
  Result
  0.016 mg/l
  
  Monitoring period
  Apr 1, 2017 – Jun 30, 2017
Collected
Feb 21, 2017 12:40

Sampling point
SMT Location withheld

Sample type
Routine

Lab sample
170222-008HA

Laboratory
MSDH Lab
- Monochloroacetic Acid 2450 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Dichloroacetic Acid 2451 EPA method 552.2
  
  Result
  0.004 mg/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  0.007 mg/l
  
  Monitoring period
  Not recorded
- Monobromoacetic Acid 2453 EPA method 552.2
  
  Result
  0.001 mg/l
  
  Monitoring period
  Not recorded
- Dibromoacetic Acid 2454 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456
  
  Result
  0.022 mg/l
  
  Monitoring period
  Jan 1, 2017 – Mar 31, 2017
Collected
Feb 21, 2017 12:30

Sampling point
SMH Location withheld

Sample type
Routine

Lab sample
170222-007HA

Laboratory
MSDH Lab
- Monochloroacetic Acid 2450 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Dichloroacetic Acid 2451 EPA method 552.2
  
  Result
  0.004 mg/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  0.008 mg/l
  
  Monitoring period
  Not recorded
- Monobromoacetic Acid 2453 EPA method 552.2
  
  Result
  0.001 mg/l
  
  Monitoring period
  Not recorded
- Dibromoacetic Acid 2454 EPA method 552.2
  
  Result
  0.005 mg/l
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456
  
  Result
  0.023 mg/l
  
  Monitoring period
  Jan 1, 2017 – Mar 31, 2017
Collected
Feb 21, 2017 12:40

Sampling point
SMT Location withheld

Sample type
Routine

Lab sample
170222-008TH

Laboratory
MSDH Lab
- Chloroform 2941 EPA method 524.2
  
  Result
  13.5 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  2.87 ug/l
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  13.9 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  13.7 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950
  
  Result
  44 ug/l
  
  Monitoring period
  Jan 1, 2017 – Mar 31, 2017
Collected
Feb 21, 2017 12:30

Sampling point
SMH Location withheld

Sample type
Routine

Lab sample
170222-007TH

Laboratory
MSDH Lab
- Chloroform 2941 EPA method 524.2
  
  Result
  13.1 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  3.59 ug/l
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  14 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  14.6 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950
  
  Result
  45 ug/l
  
  Monitoring period
  Jan 1, 2017 – Mar 31, 2017
Collected
Feb 13, 2017 13:20

Sampling point
TF103 Treatment Plant T103

Sample type
Routine

Lab sample
170214-024NI

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2017
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Feb 13, 2017 12:50

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
170214-023NI

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2017
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level

Routine (10).