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
MS0740002 , Improve Water Association
Improve Water Association has been analysed for 60 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.
58 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 58, not 60, 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 | 25 | Sep 26, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 25 | Sep 26, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 25 | Sep 26, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 25 | Sep 26, 2022 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 25 | Sep 26, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 25 | Sep 26, 2022 |
| Antimony, Total 1074 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Arsenic 1005 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Barium 1010 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Benzene 2990 | Organic Chemical | 25 | Sep 26, 2022 |
| Beryllium, Total 1075 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Bromodichloromethane 2943 | Organic Chemical | 13 | Sep 29, 2025 |
| Bromoform 2942 | Organic Chemical | 13 | Sep 29, 2025 |
| Cadmium 1015 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Carbon Tetrachloride 2982 | Organic Chemical | 25 | Sep 26, 2022 |
| Chlorobenzene 2989 | Organic Chemical | 25 | Sep 26, 2022 |
| Chloroform 2941 | Organic Chemical | 13 | Sep 29, 2025 |
| Chromium 1020 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 25 | Sep 26, 2022 |
| Coliform (TCR) 3100 | Organism | 844 | Jul 22, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 9 | Oct 1, 2019 |
| Combined Uranium 4006 | Radionuclide | 7 | Jan 10, 2024 |
| Copper, Free 1022 | Inorganic Chemical | 60 | Aug 9, 2023 |
| Cyanide 1024 | Inorganic Chemical | 19 | Dec 3, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 14 | Sep 29, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 13 | Sep 29, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 14 | Sep 29, 2025 |
| Dichloromethane 2964 | Organic Chemical | 25 | Sep 26, 2022 |
| E. Coli 3014 | Organism | 263 | Jul 22, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 25 | Sep 26, 2022 |
| Fluoride 1025 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 1 | Mar 13, 2014 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 8 | Oct 1, 2019 |
| Lead 1030 | Inorganic Chemical | 60 | Aug 9, 2023 |
| Mercury 1035 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Monobromoacetic Acid 2453 | Organic Chemical | 14 | Sep 29, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 14 | Sep 29, 2025 |
| Nickel 1036 | Inorganic Chemical | 19 | Apr 1, 2025 |
| Nitrate 1040 | Inorganic Chemical | 43 | Jul 30, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 43 | Jul 30, 2026 |
| Nitrite 1041 | Inorganic Chemical | 43 | Jul 30, 2026 |
| O-Dichlorobenzene 2968 | Organic Chemical | 25 | Sep 26, 2022 |
| P-Dichlorobenzene 2969 | Organic Chemical | 25 | Sep 26, 2022 |
| Radium-226 4020 | Radionuclide | 9 | Oct 1, 2019 |
| Radium-228 4030 | Radionuclide | 9 | Oct 1, 2019 |
| Selenium 1045 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Sodium 1052 | Inorganic Chemical | 6 | Jul 30, 2026 |
| Styrene 2996 | Organic Chemical | 25 | Sep 26, 2022 |
| Sulfate 1055 | Inorganic Chemical | 4 | Apr 5, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 25 | Sep 26, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 21 | Jul 30, 2026 |
| Toluene 2991 | Organic Chemical | 25 | Sep 26, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 19 | Sep 29, 2025 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 25 | Sep 26, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 14 | Sep 29, 2025 |
| Trichloroethylene 2984 | Organic Chemical | 25 | Sep 26, 2022 |
| TTHM 2950 | Organic Chemical | 18 | Sep 29, 2025 |
| Uranium-238 4009 | Radionuclide | 2 | Apr 19, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 25 | Sep 26, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 24 | Sep 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.