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
MS0580023 , Houlka-Washington Ext
Houlka-Washington Ext has been analysed for 59 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.
57 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 57, not 59, 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 | 19 | Sep 13, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 19 | Sep 13, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 19 | Sep 13, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 19 | Sep 13, 2022 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 19 | Sep 13, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 19 | Sep 13, 2022 |
| Antimony, Total 1074 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Arsenic 1005 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Barium 1010 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Benzene 2990 | Organic Chemical | 19 | Sep 13, 2022 |
| Beryllium, Total 1075 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 8 | Oct 20, 2025 |
| Bromoform 2942 | Organic Chemical | 8 | Oct 20, 2025 |
| Cadmium 1015 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Carbon Tetrachloride 2982 | Organic Chemical | 19 | Sep 13, 2022 |
| Chlorobenzene 2989 | Organic Chemical | 19 | Sep 13, 2022 |
| Chloroform 2941 | Organic Chemical | 8 | Oct 20, 2025 |
| Chromium 1020 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 19 | Sep 13, 2022 |
| Coliform (TCR) 3100 | Organism | 305 | Aug 11, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 10 | Jul 17, 2012 |
| Combined Uranium 4006 | Radionuclide | 8 | Oct 18, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 60 | Sep 15, 2023 |
| Cyanide 1024 | Inorganic Chemical | 22 | Oct 22, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 5 | Oct 20, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 8 | Oct 20, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 5 | Oct 20, 2025 |
| Dichloromethane 2964 | Organic Chemical | 19 | Sep 13, 2022 |
| E. Coli 3014 | Organism | 98 | Aug 11, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 19 | Sep 13, 2022 |
| Fluoride 1025 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 | Jul 17, 2012 |
| Lead 1030 | Inorganic Chemical | 60 | Sep 15, 2023 |
| Mercury 1035 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 5 | Oct 20, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 5 | Oct 20, 2025 |
| Nickel 1036 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Nitrate 1040 | Inorganic Chemical | 46 | Jul 22, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 46 | Jul 22, 2026 |
| Nitrite 1041 | Inorganic Chemical | 46 | Jul 22, 2026 |
| O-Dichlorobenzene 2968 | Organic Chemical | 19 | Sep 13, 2022 |
| P-Dichlorobenzene 2969 | Organic Chemical | 19 | Sep 13, 2022 |
| Radium-226 4020 | Radionuclide | 10 | Jul 17, 2012 |
| Radium-228 4030 | Radionuclide | 10 | Jul 17, 2012 |
| Selenium 1045 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Sodium 1052 | Inorganic Chemical | 6 | Mar 3, 2025 |
| Styrene 2996 | Organic Chemical | 19 | Sep 13, 2022 |
| Sulfate 1055 | Inorganic Chemical | 4 | Mar 15, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 19 | Sep 13, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 20 | Mar 19, 2025 |
| Toluene 2991 | Organic Chemical | 19 | Sep 13, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 11 | Oct 20, 2025 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 19 | Sep 13, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 5 | Oct 20, 2025 |
| Trichloroethylene 2984 | Organic Chemical | 19 | Sep 13, 2022 |
| TTHM 2950 | Organic Chemical | 13 | Oct 20, 2025 |
| Uranium-238 4009 | Radionuclide | 2 | Mar 29, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 19 | Sep 13, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 19 | Sep 13, 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.