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.
| 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 271–277 of 277 samples, newest first — collected November 23, 1993 to December 30, 1993. The summary above covers all 277.
14 results from the 7 samples listed here: 8 detected, 6 not detected. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.1 mg/l , sample collected Dec 30, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Dec 30, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Dec 30, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Dec 30, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.153 mg/l , sample collected Dec 30, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Dec 30, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Dec 30, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Dec 30, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Dec 30, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Dec 30, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.196 mg/l , sample collected Nov 23, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Nov 23, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.064 mg/l , sample collected Nov 23, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Nov 23, 1993, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Dec 30, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940106-016L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.1 mg/l
-
Lead 1030
- Result
- 0.003 mg/l
-
- Collected
- Dec 30, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940106-015L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Dec 30, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940106-014L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.153 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Dec 30, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940106-013L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Dec 30, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940106-012L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Nov 23, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 931124-012L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.196 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Nov 23, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 931124-011L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.064 mg/l
-
Lead 1030
- Result
- 0.001 mg/l
Routine (7).