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
MS0570004 , City of McComb
City of McComb has been analysed for 67 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.
65 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 65, not 67, 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 | Aug 1, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 7 | Aug 1, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 7 | Aug 1, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 7 | Aug 1, 2022 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 7 | Aug 1, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 7 | Aug 1, 2022 |
| Alkalinity, Total 1927 | Water Quality | 1 | Oct 15, 2021 |
| Antimony, Total 1074 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Arsenic 1005 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Asbestos 1094 | Inorganic Chemical | 1 | Sep 17, 2019 |
| Barium 1010 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Benzene 2990 | Organic Chemical | 7 | Aug 1, 2022 |
| Beryllium, Total 1075 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 35 | Dec 22, 2025 |
| Bromoform 2942 | Organic Chemical | 35 | Dec 22, 2025 |
| Cadmium 1015 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Calcium 1016 | Inorganic Chemical | 1 | Oct 15, 2021 |
| Carbon Tetrachloride 2982 | Organic Chemical | 7 | Aug 1, 2022 |
| Chloride 1017 | Inorganic Chemical | 1 | Oct 15, 2021 |
| Chlorobenzene 2989 | Organic Chemical | 7 | Aug 1, 2022 |
| Chloroform 2941 | Organic Chemical | 35 | Dec 22, 2025 |
| Chromium 1020 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 7 | Aug 1, 2022 |
| Coliform (TCR) 3100 | Organism | 4,894 | Jul 22, 2026 |
| Color 1905 | Water Quality | 1 | Oct 15, 2021 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 3 | Sep 17, 2019 |
| Combined Uranium 4006 | Radionuclide | 3 | Jun 11, 2018 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 1 | Oct 15, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 242 | Aug 19, 2025 |
| Cyanide 1024 | Inorganic Chemical | 11 | Sep 29, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 30 | Dec 22, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 35 | Dec 22, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 30 | Dec 22, 2025 |
| Dichloromethane 2964 | Organic Chemical | 7 | Aug 1, 2022 |
| E. Coli 3014 | Organism | 1,204 | Jul 22, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 7 | Aug 1, 2022 |
| Fluoride 1025 | Inorganic Chemical | 11 | Mar 19, 2025 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 | Feb 18, 2009 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 2 | Feb 18, 2009 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 1 | Sep 17, 2019 |
| Lead 1030 | Inorganic Chemical | 242 | Aug 19, 2025 |
| Mercury 1035 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 30 | Dec 22, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 30 | Dec 22, 2025 |
| Nickel 1036 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Nitrate 1040 | Inorganic Chemical | 22 | Apr 2, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 22 | Apr 2, 2025 |
| Nitrite 1041 | Inorganic Chemical | 22 | Apr 2, 2025 |
| O-Dichlorobenzene 2968 | Organic Chemical | 7 | Aug 1, 2022 |
| P-Dichlorobenzene 2969 | Organic Chemical | 7 | Aug 1, 2022 |
| Radium-226 4020 | Radionuclide | 3 | Sep 17, 2019 |
| Radium-228 4030 | Radionuclide | 3 | Sep 17, 2019 |
| Selenium 1045 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 | Feb 24, 2025 |
| Styrene 2996 | Organic Chemical | 7 | Aug 1, 2022 |
| Sulfate 1055 | Inorganic Chemical | 3 | Oct 15, 2021 |
| Tetrachloroethylene 2987 | Organic Chemical | 7 | Aug 1, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 10 | Mar 19, 2025 |
| Toluene 2991 | Organic Chemical | 7 | Aug 1, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 46 | Dec 22, 2025 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 7 | Aug 1, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 30 | Dec 22, 2025 |
| Trichloroethylene 2984 | Organic Chemical | 7 | Aug 1, 2022 |
| TTHM 2950 | Organic Chemical | 49 | Dec 22, 2025 |
| Uranium-238 4009 | Radionuclide | 1 | Mar 22, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 7 | Aug 1, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 7 | Aug 1, 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.