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
MS0710003 , Dennis Water Association
Dennis Water Association has been analysed for 105 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.
103 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 103, not 105, 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 | 7 | Sep 28, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 7 | Sep 28, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 7 | Sep 28, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 7 | Sep 28, 2022 |
| 1,2-Dibromo-3-Chloropropane 2931 | Organic Chemical | 7 | Sep 10, 2019 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 7 | Sep 28, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 7 | Sep 28, 2022 |
| 2,3,7,8-TCDD 2063 | Organic Chemical | 4 | Nov 15, 2016 |
| 2,4,5-T 2111 | Organic Chemical | 2 | Nov 15, 2016 |
| 2,4,5-TP 2110 | Organic Chemical | 6 | Nov 15, 2016 |
| 2,4-D 2105 | Organic Chemical | 6 | Nov 15, 2016 |
| 2,4-DB 2106 | Organic Chemical | 2 | Nov 15, 2016 |
| Alachlor Esa 2004 | Organic Chemical | 2 | Nov 4, 2013 |
| Aldicarb 2047 | Organic Chemical | 8 | Dec 3, 2019 |
| Aldicarb Sulfone 2044 | Organic Chemical | 8 | Dec 3, 2019 |
| Aldicarb Sulfoxide 2043 | Organic Chemical | 8 | Dec 3, 2019 |
| Antimony, Total 1074 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Aroclor 1016 2388 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1221 2390 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1232 2392 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1242 2394 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1248 2396 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1254 2398 | Organic Chemical | 6 | Nov 4, 2013 |
| Aroclor 1260 2400 | Organic Chemical | 6 | Nov 4, 2013 |
| Arsenic 1005 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Asbestos 1094 | Inorganic Chemical | 1 | Sep 25, 2019 |
| Atrazine 2050 | Organic Chemical | 4 | Nov 18, 2013 |
| Barium 1010 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Bentazon 2625 | Organic Chemical | 2 | Nov 15, 2016 |
| Benzene 2990 | Organic Chemical | 7 | Sep 28, 2022 |
| Benzo(a)pyrene 2306 | Organic Chemical | 4 | Sep 16, 2013 |
| Beryllium, Total 1075 | Inorganic Chemical | 10 | Apr 1, 2025 |
| BHC-Gamma 2010 | Organic Chemical | 6 | Nov 4, 2013 |
| Bromodichloromethane 2943 | Organic Chemical | 13 | Aug 27, 2025 |
| Bromoform 2942 | Organic Chemical | 13 | Aug 27, 2025 |
| Cadmium 1015 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Carbofuran 2046 | Organic Chemical | 8 | Dec 3, 2019 |
| Carbon Tetrachloride 2982 | Organic Chemical | 7 | Sep 28, 2022 |
| Chlordane 2959 | Organic Chemical | 4 | Oct 7, 2013 |
| Chlorobenzene 2989 | Organic Chemical | 7 | Sep 28, 2022 |
| Chloroform 2941 | Organic Chemical | 13 | Aug 27, 2025 |
| Chromium 1020 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 7 | Sep 28, 2022 |
| Coliform (TCR) 3100 | Organism | 964 | Aug 4, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 5 | Apr 2, 2012 |
| Combined Uranium 4006 | Radionuclide | 3 | Oct 6, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 89 | Sep 23, 2025 |
| Cyanide 1024 | Inorganic Chemical | 10 | Dec 2, 2025 |
| Dalapon 2031 | Organic Chemical | 6 | Nov 15, 2016 |
| DI(2-Ethylhexyl) Adipate 2035 | Organic Chemical | 4 | Nov 18, 2013 |
| DI(2-Ethylhexyl) Phthalate 2039 | Organic Chemical | 4 | Nov 18, 2013 |
| Dibromoacetic Acid 2454 | Organic Chemical | 13 | Aug 27, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 13 | Aug 27, 2025 |
| Dicamba 2440 | Organic Chemical | 2 | Nov 15, 2016 |
| Dichloroacetic Acid 2451 | Organic Chemical | 13 | Aug 27, 2025 |
| Dichloromethane 2964 | Organic Chemical | 7 | Sep 28, 2022 |
| Dichlorprop 2206 | Organic Chemical | 2 | Nov 15, 2016 |
| Dinoseb 2041 | Organic Chemical | 6 | Nov 15, 2016 |
| Diquat 2032 | Organic Chemical | 8 | Nov 6, 2019 |
| E. Coli 3014 | Organism | 316 | Aug 4, 2026 |
| Endothall 2033 | Organic Chemical | 6 | Nov 15, 2016 |
| Endrin 2005 | Organic Chemical | 4 | Oct 7, 2013 |
| Ethylbenzene 2992 | Organic Chemical | 7 | Sep 28, 2022 |
| Ethylene Dibromide 2946 | Organic Chemical | 7 | Sep 10, 2019 |
| Fluoride 1025 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Glyphosate 2034 | Organic Chemical | 8 | Sep 25, 2019 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 5 | Apr 2, 2012 |
| Heptachlor 2065 | Organic Chemical | 4 | Oct 7, 2013 |
| Heptachlor Epoxide 2067 | Organic Chemical | 4 | Oct 7, 2013 |
| Hexachlorobenzene 2274 | Organic Chemical | 4 | Oct 7, 2013 |
| Hexachlorocyclopentadiene 2042 | Organic Chemical | 4 | Dec 17, 2013 |
| Lasso 2051 | Organic Chemical | 4 | Nov 18, 2013 |
| Lead 1030 | Inorganic Chemical | 89 | Sep 23, 2025 |
| Mercury 1035 | Inorganic Chemical | 10 | Sep 23, 2025 |
| Methoxychlor 2015 | Organic Chemical | 4 | Oct 7, 2013 |
| Monobromoacetic Acid 2453 | Organic Chemical | 13 | Aug 27, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 13 | Aug 27, 2025 |
| Nickel 1036 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Nitrate 1040 | Inorganic Chemical | 21 | Jul 29, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 21 | Jul 29, 2026 |
| Nitrite 1041 | Inorganic Chemical | 21 | Jul 29, 2026 |
| O-Dichlorobenzene 2968 | Organic Chemical | 7 | Sep 28, 2022 |
| Oxamyl 2036 | Organic Chemical | 8 | Dec 3, 2019 |
| P-Dichlorobenzene 2969 | Organic Chemical | 7 | Sep 28, 2022 |
| Pentachlorophenol 2326 | Organic Chemical | 6 | Nov 15, 2016 |
| Picloram 2040 | Organic Chemical | 6 | Nov 15, 2016 |
| Radium-226 4020 | Radionuclide | 5 | Apr 2, 2012 |
| Radium-228 4030 | Radionuclide | 5 | Apr 2, 2012 |
| Selenium 1045 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Simazine 2037 | Organic Chemical | 4 | Nov 18, 2013 |
| Sodium 1052 | Inorganic Chemical | 3 | Jul 29, 2026 |
| Styrene 2996 | Organic Chemical | 7 | Sep 28, 2022 |
| Sulfate 1055 | Inorganic Chemical | 2 | Mar 29, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 7 | Sep 28, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 10 | Apr 1, 2025 |
| Toluene 2991 | Organic Chemical | 7 | Sep 28, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 19 | Aug 27, 2025 |
| Toxaphene 2020 | Organic Chemical | 4 | Oct 7, 2013 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 7 | Sep 28, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 13 | Aug 27, 2025 |
| Trichloroethylene 2984 | Organic Chemical | 7 | Sep 28, 2022 |
| TTHM 2950 | Organic Chemical | 18 | Aug 27, 2025 |
| Uranium-238 4009 | Radionuclide | 1 | Apr 10, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 7 | Sep 28, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 7 | Sep 28, 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.