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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

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 201–210 of 240 samples, newest first — collected June 19, 1996 to January 7, 2004. The summary above covers all 240.

48 results from the 10 samples listed here: 17 detected, 31 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 201 to 210 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
Jan 7, 2004
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
040108-001VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,2,4-Trichlorobenzene 2378 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Cis-1,2-Dichloroethylene 2380 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Xylenes, Total 2955 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Dichloromethane 2964 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 O-Dichlorobenzene 2968 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 P-Dichlorobenzene 2969 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Vinyl Chloride 2976 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,1-Dichloroethylene 2977 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Trans-1,2-Dichloroethylene 2979 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,2-Dichloroethane 2980 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,1,1-Trichloroethane 2981 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Carbon Tetrachloride 2982 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,2-Dichloropropane 2983 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Trichloroethylene 2984 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 1,1,2-Trichloroethane 2985 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Tetrachloroethylene 2987 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Chlorobenzene 2989 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Benzene 2990 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Toluene 2991 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Ethylbenzene 2992 Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Jan 7, 2004, sampling point TF104 Styrene 2996 Jan 1, 2004 – Mar 31, 2004
Collected
Sep 15, 2003
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
030916-064IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Arsenic 1005 EPA method 200.8 Not recorded
0.006 mg/l , sample collected Sep 15, 2003, sampling point TF104 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Cadmium 1015 EPA method 200.8 Not recorded
0.001 mg/l , sample collected Sep 15, 2003, sampling point TF104 Chromium 1020 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Selenium 1045 EPA method 200.8 Not recorded
3.77 mg/l , sample collected Sep 15, 2003, sampling point TF104 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 15, 2003, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Sep 8, 2003
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
030909-001CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Sep 8, 2003, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Aug 16, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000817-020L
Laboratory
MSDH Lab
0.2 mg/l , sample collected Aug 16, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Aug 16, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 16, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000817-019L
Laboratory
MSDH Lab
0.031 mg/l , sample collected Aug 16, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Aug 16, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 16, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000817-018L
Laboratory
MSDH Lab
0.048 mg/l , sample collected Aug 16, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Aug 16, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 16, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000817-017L
Laboratory
MSDH Lab
0.038 mg/l , sample collected Aug 16, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Aug 16, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 16, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000817-016L
Laboratory
MSDH Lab
0.046 mg/l , sample collected Aug 16, 2000, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Aug 16, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 19, 1996
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
960620-036L
Laboratory
MSDH Lab
0.416 mg/l , sample collected Jun 19, 1996, sampling point DS000 Copper, Free 1022 Not recorded
0.018 mg/l , sample collected Jun 19, 1996, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 19, 1996
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
960620-035L
Laboratory
MSDH Lab
0.31 mg/l , sample collected Jun 19, 1996, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Jun 19, 1996, sampling point DS000 Lead 1030 Not recorded

Routine (10).