Chemical and radiological sample results

MS0100008 , Simpson Water Association #1

24 of the 58 analytes this system has been tested for have been detected at least once, across 240 samples on record.

The other 34 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 240 samples on record, detections range from July 28, 1993 to April 20, 2026. 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 Simpson Water Association #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	107 of 109 results	Jul 28, 1993	Jun 10, 2025
Lead 1030	Inorganic Chemical	90 of 109 results	Jul 28, 1993	Jun 10, 2025
TTHM 2950	Organic Chemical	16 of 20 results	May 17, 2004	Apr 20, 2026
Barium 1010	Inorganic Chemical	15 of 15 results	Sep 15, 2003	Jan 15, 2025
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	13 of 20 results	Jul 10, 2007	Apr 20, 2026
Chloroform 2941	Organic Chemical	11 of 15 results	Jul 10, 2007	Apr 20, 2026
Bromodichloromethane 2943	Organic Chemical	11 of 15 results	Jul 10, 2007	Apr 20, 2026
Fluoride 1025	Inorganic Chemical	11 of 15 results	Jan 14, 2004	Jan 8, 2024
Dibromochloromethane 2944	Organic Chemical	10 of 15 results	Jul 10, 2007	Apr 20, 2026
Dichloroacetic Acid 2451	Organic Chemical	8 of 14 results	Aug 11, 2008	Apr 20, 2026
Nickel 1036	Inorganic Chemical	8 of 15 results	Jan 14, 2004	Jan 8, 2024
Trichloroacetic Acid 2452	Organic Chemical	7 of 14 results	Aug 11, 2008	Apr 20, 2026
Chromium 1020	Inorganic Chemical	7 of 15 results	Sep 15, 2003	Jan 15, 2025
Sodium 1052	Inorganic Chemical	6 of 6 results	Sep 17, 2019	Oct 15, 2024
Gross Alpha, Incl. Radon & U 4002	Radionuclide	6 of 6 results	Dec 8, 2011	Nov 20, 2013
Combined Radium (-226 & -228) 4010	Radionuclide	5 of 7 results	Dec 8, 2011	Jul 12, 2012
Radium-226 4020	Radionuclide	5 of 7 results	Dec 8, 2011	Jul 12, 2012
Selenium 1045	Inorganic Chemical	2 of 15 results	Mar 2, 2005	Mar 24, 2008
Sulfate 1055	Inorganic Chemical	2 of 2 results	Sep 15, 2003	Jan 14, 2004
Dibromoacetic Acid 2454	Organic Chemical	1 of 14 results	Jul 16, 2020	Jul 16, 2020
Gross Alpha Particle Activity 4109	Radionuclide	1 of 1 result	Sep 11, 2013	Sep 11, 2013
Bromoform 2942	Organic Chemical	1 of 15 results	Jul 10, 2007	Jul 10, 2007
Cadmium 1015	Inorganic Chemical	1 of 15 results	Mar 2, 2005	Mar 2, 2005
Arsenic 1005	Inorganic Chemical	1 of 15 results	Jan 14, 2004	Jan 14, 2004

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 240 samples, newest first — collected February 1, 2021 to April 26, 2022. The summary above covers all 240.

34 results from the 10 samples listed here: 4 detected, 30 not detected. Across the whole record it is 345 of 1,051. 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 Simpson Water Association #1, every result from 51 to 60 of 240 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 Apr 26, 2022 13:00 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample VO-220427-002 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Dichloromethane 2964 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Benzene 2990 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Toluene 2991 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 26, 2022 13:00, sampling point TF104	Styrene 2996 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Collected Feb 23, 2022 15:16 Sampling point TF105 Treatment Facility TF105 Sample type Routine Lab sample RU-220224-018 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 23, 2022 15:16, sampling point TF105	Combined Uranium 4006 EPA method 200.8	Jan 1, 2014 – Dec 31, 2022
Collected Aug 30, 2021 13:15 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-210831-005 Laboratory MSDH Lab
4.49 ug/l , sample collected Aug 30, 2021 13:15, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Aug 30, 2021 13:00 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-210831-005 Laboratory MSDH Lab
10.9 ug/l , sample collected Aug 30, 2021 13:00, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected Apr 12, 2021 13:00 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample CN-210413-017 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 12, 2021 13:00, sampling point TF104	Cyanide 1024 EPA method QC10204001X	Jan 1, 2020 – Dec 31, 2022
Collected Feb 8, 2021 13:30 Sampling point TF105 Treatment Facility TF105 Sample type Routine Lab sample CN-210209-001 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Feb 8, 2021 13:30, sampling point TF105	Cyanide 1024 EPA method QC10204001X	Jan 1, 2019 – Dec 31, 2021
Collected Feb 1, 2021 13:30 Sampling point TF105 Treatment Facility TF105 Sample type Routine Lab sample NA-210202-039 Laboratory MSDH Lab
61.1 mg/l , sample collected Feb 1, 2021 13:30, sampling point TF105	Sodium 1052 EPA method 200.7	Not recorded
Collected Feb 1, 2021 13:00 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample NA-210202-038 Laboratory MSDH Lab
62.3 mg/l , sample collected Feb 1, 2021 13:00, sampling point TF104	Sodium 1052 EPA method 200.7	Not recorded
Collected Feb 1, 2021 13:30 Sampling point TF105 Treatment Facility TF105 Sample type Routine Lab sample NI-210202-041 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:30, sampling point TF105	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:30, sampling point TF105	Nitrate 1040 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:30, sampling point TF105	Nitrite 1041 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Collected Feb 1, 2021 13:00 Sampling point TF104 Treatment Plant T104 Sample type Routine Lab sample NI-210202-040 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:00, sampling point TF104	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:00, sampling point TF104	Nitrate 1040 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 1, 2021 13:00, sampling point TF104	Nitrite 1041 EPA method QC10107041C	Jan 1, 2021 – Dec 31, 2021

Collected
Apr 26, 2022 13:00

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
VO-220427-002

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2022
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Feb 23, 2022 15:16

Sampling point
TF105 Treatment Facility TF105

Sample type
Routine

Lab sample
RU-220224-018

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2014 – Dec 31, 2022
- Combined Uranium 4006 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Aug 30, 2021 13:15

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-210831-005

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  4.49 ug/l
Collected
Aug 30, 2021 13:00

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-210831-005

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  10.9 ug/l
Collected
Apr 12, 2021 13:00

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
CN-210413-017

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2020 – Dec 31, 2022
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Feb 8, 2021 13:30

Sampling point
TF105 Treatment Facility TF105

Sample type
Routine

Lab sample
CN-210209-001

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Feb 1, 2021 13:30

Sampling point
TF105 Treatment Facility TF105

Sample type
Routine

Lab sample
NA-210202-039

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  61.1 mg/l
Collected
Feb 1, 2021 13:00

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
NA-210202-038

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  62.3 mg/l
Collected
Feb 1, 2021 13:30

Sampling point
TF105 Treatment Facility TF105

Sample type
Routine

Lab sample
NI-210202-041

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- 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 1, 2021 13:00

Sampling point
TF104 Treatment Plant T104

Sample type
Routine

Lab sample
NI-210202-040

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- 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).