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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

MS0110004 , Pattison W/A-West

32 of the 64 analytes this system has been tested for have been detected at least once, across 277 samples on record.

The other 32 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 277 samples on record, detections range from November 23, 1993 to March 12, 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 Pattison W/A-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 155 of 173 results Nov 23, 1993 Jul 12, 2023
Lead 1030 Inorganic Chemical 106 of 173 results Nov 23, 1993 Jul 12, 2023
Barium 1010 Inorganic Chemical 16 of 16 results Mar 26, 2002 Jan 29, 2025
Fluoride 1025 Inorganic Chemical 13 of 19 results Mar 26, 2002 Oct 11, 2021
Nickel 1036 Inorganic Chemical 12 of 16 results Mar 26, 2002 Jan 29, 2025
Chromium 1020 Inorganic Chemical 9 of 16 results Jan 28, 2004 Jan 29, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 9 results Jul 11, 2007 Mar 12, 2025
Sulfate 1055 Inorganic Chemical 7 of 7 results Mar 26, 2002 Oct 11, 2021
Gross Alpha, Incl. Radon & U 4002 Radionuclide 7 of 7 results Dec 5, 2011 Jul 12, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 7 of 9 results Dec 5, 2011 Jul 12, 2012
Radium-228 4030 Radionuclide 7 of 9 results Dec 5, 2011 Jul 12, 2012
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 18, 2019 Oct 28, 2024
TTHM 2950 Organic Chemical 6 of 9 results May 10, 2004 Jul 18, 2018
Chloroform 2941 Organic Chemical 5 of 5 results Jul 11, 2007 Jul 18, 2018
Bromodichloromethane 2943 Organic Chemical 5 of 5 results Jul 11, 2007 Jul 18, 2018
Dibromochloromethane 2944 Organic Chemical 5 of 5 results Jul 11, 2007 Jul 18, 2018
Selenium 1045 Inorganic Chemical 5 of 16 results Feb 14, 2005 May 7, 2008
Dichloroacetic Acid 2451 Organic Chemical 4 of 4 results Aug 13, 2008 Jul 18, 2018
Cadmium 1015 Inorganic Chemical 4 of 16 results Feb 14, 2005 Jan 23, 2006
Calcium 1016 Inorganic Chemical 3 of 3 results Oct 11, 2021 Oct 11, 2021
Chloride 1017 Inorganic Chemical 3 of 3 results Oct 11, 2021 Oct 11, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 3 of 3 results Oct 11, 2021 Oct 11, 2021
Alkalinity, Total 1927 Water Quality 3 of 3 results Oct 11, 2021 Oct 11, 2021
Color 1905 Water Quality 2 of 3 results Oct 11, 2021 Oct 11, 2021
Dibromoacetic Acid 2454 Organic Chemical 2 of 4 results Jul 11, 2012 Jul 18, 2018
Bromoform 2942 Organic Chemical 2 of 5 results Jul 11, 2007 Jul 18, 2018
Arsenic 1005 Inorganic Chemical 1 of 16 results Jan 29, 2025 Jan 29, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 27 results Jan 22, 2018 Jan 22, 2018
Nitrate 1040 Inorganic Chemical 1 of 27 results Jan 22, 2018 Jan 22, 2018
Trichloroacetic Acid 2452 Organic Chemical 1 of 4 results Aug 18, 2014 Aug 18, 2014
Monochloroacetic Acid 2450 Organic Chemical 1 of 4 results Aug 13, 2008 Aug 13, 2008
Beryllium, Total 1075 Inorganic Chemical 1 of 16 results Feb 3, 2004 Feb 3, 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 241–250 of 277 samples, newest first — collected April 13, 1994 to October 5, 1994. The summary above covers all 277.

20 results from the 10 samples listed here: 18 detected, 2 not detected. Across the whole record it is 411 of 982. 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 Pattison W/A-West, every result from 241 to 250 of 277 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
Oct 5, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
941006-002L
Laboratory
MSDH Lab
0.069 mg/l , sample collected Oct 5, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Oct 5, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 5, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
941006-001L
Laboratory
MSDH Lab
Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 5, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Oct 5, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Oct 4, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
941006-018L
Laboratory
MSDH Lab
0.146 mg/l , sample collected Oct 4, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Oct 4, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-033L
Laboratory
MSDH Lab
0.438 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-032L
Laboratory
MSDH Lab
0.093 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-031L
Laboratory
MSDH Lab
0.314 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-030L
Laboratory
MSDH Lab
0.902 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-029L
Laboratory
MSDH Lab
0.081 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-028L
Laboratory
MSDH Lab
0.118 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 13, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940414-027L
Laboratory
MSDH Lab
0.302 mg/l , sample collected Apr 13, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.007 mg/l , sample collected Apr 13, 1994, sampling point DS000 Lead 1030 Not recorded

Routine (10).