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.
Analytes tested for
MS0110004 , Pattison W/A-West
Pattison W/A-West has been analysed for 66 analytes.
This is what has been looked for, not what has been found. Which of them have been detected, and when, is on the sample results page.
The agency also publishes one analyte list across every system it serves. That list carries no results and no counts, and it leaves out coliform and the other microbiological analytes — which this page does not.
64 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 64, not 66, for that reason. The other 2 — Coliform (TCR) and E. Coli — are organisms, and their records live with the coliform and microbial samples.
| Analyte | Kind | Results on record | Last collected |
|---|---|---|---|
| 1,1,1-Trichloroethane 2981 | Organic Chemical | 11 | Apr 26, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 11 | Apr 26, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 11 | Apr 26, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 11 | Apr 26, 2022 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 11 | Apr 26, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 11 | Apr 26, 2022 |
| Alkalinity, Total 1927 | Water Quality | 3 | Oct 11, 2021 |
| Antimony, Total 1074 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Arsenic 1005 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Barium 1010 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Benzene 2990 | Organic Chemical | 11 | Apr 26, 2022 |
| Beryllium, Total 1075 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 5 | Jul 18, 2018 |
| Bromoform 2942 | Organic Chemical | 5 | Jul 18, 2018 |
| Cadmium 1015 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Calcium 1016 | Inorganic Chemical | 3 | Oct 11, 2021 |
| Carbon Tetrachloride 2982 | Organic Chemical | 11 | Apr 26, 2022 |
| Chloride 1017 | Inorganic Chemical | 3 | Oct 11, 2021 |
| Chlorobenzene 2989 | Organic Chemical | 11 | Apr 26, 2022 |
| Chloroform 2941 | Organic Chemical | 5 | Jul 18, 2018 |
| Chromium 1020 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 11 | Apr 26, 2022 |
| Coliform (TCR) 3100 | Organism | 857 | Aug 11, 2026 |
| Color 1905 | Water Quality | 3 | Oct 11, 2021 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 9 | Jul 12, 2012 |
| Combined Uranium 4006 | Radionuclide | 6 | Jul 16, 2018 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 3 | Oct 11, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 173 | Jul 12, 2023 |
| Cyanide 1024 | Inorganic Chemical | 13 | Apr 21, 2021 |
| Dibromoacetic Acid 2454 | Organic Chemical | 4 | Jul 18, 2018 |
| Dibromochloromethane 2944 | Organic Chemical | 5 | Jul 18, 2018 |
| Dichloroacetic Acid 2451 | Organic Chemical | 4 | Jul 18, 2018 |
| Dichloromethane 2964 | Organic Chemical | 11 | Apr 26, 2022 |
| E. Coli 3014 | Organism | 275 | Aug 11, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 11 | Apr 26, 2022 |
| Fluoride 1025 | Inorganic Chemical | 19 | Jan 29, 2025 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 | Jun 13, 2012 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 2 | Jun 13, 2012 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 7 | Jul 12, 2012 |
| Lead 1030 | Inorganic Chemical | 173 | Jul 12, 2023 |
| Mercury 1035 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 4 | Jul 18, 2018 |
| Monochloroacetic Acid 2450 | Organic Chemical | 4 | Jul 18, 2018 |
| Nickel 1036 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Nitrate 1040 | Inorganic Chemical | 27 | Feb 23, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 27 | Feb 23, 2026 |
| Nitrite 1041 | Inorganic Chemical | 27 | Feb 23, 2026 |
| O-Dichlorobenzene 2968 | Organic Chemical | 11 | Apr 26, 2022 |
| P-Dichlorobenzene 2969 | Organic Chemical | 11 | Apr 26, 2022 |
| Radium-226 4020 | Radionuclide | 9 | Jul 12, 2012 |
| Radium-228 4030 | Radionuclide | 9 | Jul 12, 2012 |
| Selenium 1045 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Sodium 1052 | Inorganic Chemical | 6 | Oct 28, 2024 |
| Styrene 2996 | Organic Chemical | 11 | Apr 26, 2022 |
| Sulfate 1055 | Inorganic Chemical | 7 | Oct 11, 2021 |
| Tetrachloroethylene 2987 | Organic Chemical | 11 | Apr 26, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 16 | Jan 29, 2025 |
| Toluene 2991 | Organic Chemical | 11 | Apr 26, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 9 | Mar 12, 2025 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 11 | Apr 26, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 4 | Jul 18, 2018 |
| Trichloroethylene 2984 | Organic Chemical | 11 | Apr 26, 2022 |
| TTHM 2950 | Organic Chemical | 9 | Mar 12, 2025 |
| Uranium-238 4009 | Radionuclide | 2 | Jan 23, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 11 | Apr 26, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 11 | Apr 26, 2022 |
A result is one laboratory analysis for one analyte on one sample, whether or not anything was found. Counts cover every Accepted or Validated result on record, with no date range applied.
What an analyte is
“Analytes are contaminants and other elements (some of which are not necessarily contaminants), for which the drinking water is being analyzed.”
From the help text published with these pages.