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
MS0300163 , Helena Utility District
Helena Utility District has been analysed for 53 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.
51 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 51, not 53, 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 | 12 | Jun 18, 2007 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 12 | Jun 18, 2007 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 12 | Jun 18, 2007 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 12 | Jun 18, 2007 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 12 | Jun 18, 2007 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 12 | Jun 18, 2007 |
| Antimony, Total 1074 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Arsenic 1005 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Barium 1010 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Benzene 2990 | Organic Chemical | 12 | Jun 18, 2007 |
| Beryllium, Total 1075 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Bromodichloromethane 2943 | Organic Chemical | 17 | Jun 30, 2026 |
| Bromoform 2942 | Organic Chemical | 17 | Jun 30, 2026 |
| Cadmium 1015 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Carbon Tetrachloride 2982 | Organic Chemical | 12 | Jun 18, 2007 |
| Chlorobenzene 2989 | Organic Chemical | 12 | Jun 18, 2007 |
| Chloroform 2941 | Organic Chemical | 17 | Jun 30, 2026 |
| Chromium 1020 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 12 | Jun 18, 2007 |
| Coliform (TCR) 3100 | Organism | 192 | Aug 17, 2026 |
| Copper, Free 1022 | Inorganic Chemical | 216 | Jul 22, 2026 |
| Cyanide 1024 | Inorganic Chemical | 10 | Sep 14, 2009 |
| Dibromoacetic Acid 2454 | Organic Chemical | 17 | Jun 30, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 17 | Jun 30, 2026 |
| Dichloroacetic Acid 2451 | Organic Chemical | 17 | Jun 30, 2026 |
| Dichloromethane 2964 | Organic Chemical | 12 | Jun 18, 2007 |
| E. Coli 3014 | Organism | 86 | Aug 17, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 12 | Jun 18, 2007 |
| Fluoride 1025 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Lead 1030 | Inorganic Chemical | 216 | Jul 22, 2026 |
| Mercury 1035 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Monobromoacetic Acid 2453 | Organic Chemical | 17 | Jun 30, 2026 |
| Monochloroacetic Acid 2450 | Organic Chemical | 17 | Jun 30, 2026 |
| Nickel 1036 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Nitrate 1040 | Inorganic Chemical | 14 | Jul 7, 2010 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 14 | Jul 7, 2010 |
| Nitrite 1041 | Inorganic Chemical | 14 | Jul 7, 2010 |
| O-Dichlorobenzene 2968 | Organic Chemical | 12 | Jun 18, 2007 |
| P-Dichlorobenzene 2969 | Organic Chemical | 12 | Jun 18, 2007 |
| Selenium 1045 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Styrene 2996 | Organic Chemical | 12 | Jun 18, 2007 |
| Sulfate 1055 | Inorganic Chemical | 4 | Feb 9, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 12 | Jun 18, 2007 |
| Thallium, Total 1085 | Inorganic Chemical | 10 | Nov 5, 2009 |
| Toluene 2991 | Organic Chemical | 12 | Jun 18, 2007 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 27 | Jun 30, 2026 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 12 | Jun 18, 2007 |
| Trichloroacetic Acid 2452 | Organic Chemical | 17 | Jun 30, 2026 |
| Trichloroethylene 2984 | Organic Chemical | 12 | Jun 18, 2007 |
| TTHM 2950 | Organic Chemical | 27 | Jun 30, 2026 |
| Uranium-238 4009 | Radionuclide | 3 | Feb 13, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 12 | Jun 18, 2007 |
| Xylenes, Total 2955 | Organic Chemical | 12 | Jun 18, 2007 |
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.