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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 231–240 of 240 samples, newest first — collected July 28, 1993 to July 28, 1993. The summary above covers all 240.

20 results from the 10 samples listed here: 18 detected, 2 not detected. 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 231 to 240 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
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-136L
Laboratory
MSDH Lab
0.158 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-135L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-133L
Laboratory
MSDH Lab
0.522 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-132L
Laboratory
MSDH Lab
0.208 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-131L
Laboratory
MSDH Lab
0.051 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-130L
Laboratory
MSDH Lab
0.111 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-129L
Laboratory
MSDH Lab
0.106 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-128L
Laboratory
MSDH Lab
0.528 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.007 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-127L
Laboratory
MSDH Lab
0.264 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Jul 28, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930729-126L
Laboratory
MSDH Lab
0.253 mg/l , sample collected Jul 28, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Jul 28, 1993, sampling point DS000 Lead 1030 Not recorded

Routine (10).