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
MS0170019 , Walls Water Association
Walls 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 | 44 | Jan 29, 2024 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 44 | Jan 29, 2024 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 44 | Jan 29, 2024 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 44 | Jan 29, 2024 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 44 | Jan 29, 2024 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 44 | Jan 29, 2024 |
| Antimony, Total 1074 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Arsenic 1005 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Asbestos 1094 | Inorganic Chemical | 3 | Aug 29, 2019 |
| Barium 1010 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Benzene 2990 | Organic Chemical | 44 | Jan 29, 2024 |
| Beryllium, Total 1075 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 16 | Jan 22, 2026 |
| Bromoform 2942 | Organic Chemical | 16 | Jan 22, 2026 |
| Cadmium 1015 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Carbon Tetrachloride 2982 | Organic Chemical | 44 | Jan 29, 2024 |
| Chlorobenzene 2989 | Organic Chemical | 44 | Jan 29, 2024 |
| Chloroform 2941 | Organic Chemical | 16 | Jan 22, 2026 |
| Chromium 1020 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 44 | Jan 29, 2024 |
| Coliform (TCR) 3100 | Organism | 594 | Aug 12, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 10 | Oct 4, 2012 |
| Combined Uranium 4006 | Radionuclide | 8 | Jul 24, 2018 |
| Copper, Free 1022 | Inorganic Chemical | 110 | Sep 23, 2025 |
| Cyanide 1024 | Inorganic Chemical | 15 | Aug 19, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 16 | Jan 22, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 16 | Jan 22, 2026 |
| Dichloroacetic Acid 2451 | Organic Chemical | 16 | Jan 22, 2026 |
| Dichloromethane 2964 | Organic Chemical | 44 | Jan 29, 2024 |
| E. Coli 3014 | Organism | 264 | Aug 12, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 44 | Jan 29, 2024 |
| Fluoride 1025 | Inorganic Chemical | 17 | Jun 22, 2026 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 | Oct 4, 2012 |
| Lead 1030 | Inorganic Chemical | 110 | Sep 23, 2025 |
| Mercury 1035 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 16 | Jan 22, 2026 |
| Monochloroacetic Acid 2450 | Organic Chemical | 16 | Jan 22, 2026 |
| Nickel 1036 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Nitrate 1040 | Inorganic Chemical | 35 | Jan 28, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 35 | Jan 28, 2025 |
| Nitrite 1041 | Inorganic Chemical | 35 | Jan 28, 2025 |
| O-Dichlorobenzene 2968 | Organic Chemical | 44 | Jan 29, 2024 |
| P-Dichlorobenzene 2969 | Organic Chemical | 44 | Jan 29, 2024 |
| Radium-226 4020 | Radionuclide | 10 | Oct 4, 2012 |
| Radium-228 4030 | Radionuclide | 10 | Oct 4, 2012 |
| Selenium 1045 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 | Oct 15, 2024 |
| Styrene 2996 | Organic Chemical | 44 | Jan 29, 2024 |
| Sulfate 1055 | Inorganic Chemical | 2 | Jan 26, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 44 | Jan 29, 2024 |
| Thallium, Total 1085 | Inorganic Chemical | 16 | Feb 4, 2025 |
| Toluene 2991 | Organic Chemical | 44 | Jan 29, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 23 | Jan 22, 2026 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 44 | Jan 29, 2024 |
| Trichloroacetic Acid 2452 | Organic Chemical | 16 | Jan 22, 2026 |
| Trichloroethylene 2984 | Organic Chemical | 44 | Jan 29, 2024 |
| TTHM 2950 | Organic Chemical | 22 | Jan 22, 2026 |
| Uranium-238 4009 | Radionuclide | 1 | Jan 25, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 44 | Jan 29, 2024 |
| Xylenes, Total 2955 | Organic Chemical | 44 | Jan 29, 2024 |
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.