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
MS0610030 , Union Water Association
Union Water Association has been analysed for 74 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.
72 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 72, not 74, 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 | 42 | Dec 16, 2025 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 42 | Dec 16, 2025 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 42 | Dec 16, 2025 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 42 | Dec 16, 2025 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 42 | Dec 16, 2025 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 42 | Dec 16, 2025 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 2 | Mar 30, 2009 |
| Alkalinity, Total 1927 | Water Quality | 2 | Mar 30, 2009 |
| Antimony, Total 1074 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Arsenic 1005 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Barium 1010 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Benzene 2990 | Organic Chemical | 42 | Dec 16, 2025 |
| Beryllium, Total 1075 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 17 | Jun 23, 2026 |
| Bromoform 2942 | Organic Chemical | 17 | Jun 23, 2026 |
| Cadmium 1015 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Calcium 1016 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Calculated Sodium NACA | Water Quality | 2 | Mar 30, 2009 |
| Carbon Dioxide 1901 | Water Quality | 2 | Mar 30, 2009 |
| Carbon Tetrachloride 2982 | Organic Chemical | 42 | Dec 16, 2025 |
| Chloride 1017 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Chlorobenzene 2989 | Organic Chemical | 42 | Dec 16, 2025 |
| Chloroform 2941 | Organic Chemical | 17 | Jun 23, 2026 |
| Chromium 1020 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 42 | Dec 16, 2025 |
| Coliform (TCR) 3100 | Organism | 289 | Jul 22, 2026 |
| Color 1905 | Water Quality | 2 | Mar 30, 2009 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 12 | Dec 10, 2015 |
| Combined Uranium 4006 | Radionuclide | 18 | Oct 19, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 58 | Aug 2, 2023 |
| Cyanide 1024 | Inorganic Chemical | 23 | Dec 16, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 17 | Jun 23, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 17 | Jun 23, 2026 |
| Dichloroacetic Acid 2451 | Organic Chemical | 17 | Jun 23, 2026 |
| Dichloromethane 2964 | Organic Chemical | 42 | Dec 16, 2025 |
| E. Coli 3014 | Organism | 99 | Jul 22, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 42 | Dec 16, 2025 |
| Fluoride 1025 | Inorganic Chemical | 25 | Apr 22, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 12 | Dec 10, 2015 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 2 | Mar 30, 2009 |
| Iron 1028 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Iron, Field Result FEFD | Inorganic Chemical | 2 | Mar 30, 2009 |
| Lead 1030 | Inorganic Chemical | 58 | Aug 2, 2023 |
| Magnesium 1031 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Manganese 1032 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Mercury 1035 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 17 | Jun 23, 2026 |
| Monochloroacetic Acid 2450 | Organic Chemical | 17 | Jun 23, 2026 |
| Nickel 1036 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Nitrate 1040 | Inorganic Chemical | 53 | Dec 16, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 53 | Dec 16, 2025 |
| Nitrite 1041 | Inorganic Chemical | 53 | Dec 16, 2025 |
| O-Dichlorobenzene 2968 | Organic Chemical | 42 | Dec 16, 2025 |
| P-Dichlorobenzene 2969 | Organic Chemical | 42 | Dec 16, 2025 |
| PH, Field Result PHFD | Water Quality | 2 | Mar 30, 2009 |
| Potassium 1042 | Inorganic Chemical | 2 | Mar 30, 2009 |
| Radium-226 4020 | Radionuclide | 12 | Dec 10, 2015 |
| Radium-228 4030 | Radionuclide | 12 | Dec 10, 2015 |
| Residue, Total, Filterable 1057 | Water Quality | 2 | Mar 30, 2009 |
| Selenium 1045 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Sodium 1052 | Inorganic Chemical | 8 | Nov 27, 2023 |
| Styrene 2996 | Organic Chemical | 42 | Dec 16, 2025 |
| Sulfate 1055 | Inorganic Chemical | 4 | Mar 30, 2009 |
| Tetrachloroethylene 2987 | Organic Chemical | 42 | Dec 16, 2025 |
| Thallium, Total 1085 | Inorganic Chemical | 23 | Apr 22, 2025 |
| Toluene 2991 | Organic Chemical | 42 | Dec 16, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 28 | Jun 23, 2026 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 42 | Dec 16, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 17 | Jun 23, 2026 |
| Trichloroethylene 2984 | Organic Chemical | 42 | Dec 16, 2025 |
| TTHM 2950 | Organic Chemical | 28 | Jun 23, 2026 |
| Uranium-238 4009 | Radionuclide | 2 | Mar 29, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 42 | Dec 16, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 42 | Dec 16, 2025 |
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.