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
MS0350006 , Porterville W/A
Porterville W/A has been analysed for 59 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.
57 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 57, not 59, 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 | 23 | Feb 24, 2025 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 23 | Feb 24, 2025 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 23 | Feb 24, 2025 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 23 | Feb 24, 2025 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 23 | Feb 24, 2025 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 23 | Feb 24, 2025 |
| Antimony, Total 1074 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Arsenic 1005 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Barium 1010 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Benzene 2990 | Organic Chemical | 23 | Feb 24, 2025 |
| Beryllium, Total 1075 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 16 | Dec 1, 2025 |
| Bromoform 2942 | Organic Chemical | 16 | Dec 1, 2025 |
| Cadmium 1015 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Carbon Tetrachloride 2982 | Organic Chemical | 23 | Feb 24, 2025 |
| Chlorobenzene 2989 | Organic Chemical | 23 | Feb 24, 2025 |
| Chloroform 2941 | Organic Chemical | 16 | Dec 1, 2025 |
| Chromium 1020 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 23 | Feb 24, 2025 |
| Coliform (TCR) 3100 | Organism | 835 | Jul 8, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 10 | Oct 2, 2012 |
| Combined Uranium 4006 | Radionuclide | 15 | Jan 15, 2025 |
| Copper, Free 1022 | Inorganic Chemical | 60 | Aug 23, 2023 |
| Cyanide 1024 | Inorganic Chemical | 23 | May 7, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 14 | Nov 20, 2024 |
| Dibromochloromethane 2944 | Organic Chemical | 16 | Dec 1, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 14 | Nov 20, 2024 |
| Dichloromethane 2964 | Organic Chemical | 23 | Feb 24, 2025 |
| E. Coli 3014 | Organism | 188 | Jul 8, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 23 | Feb 24, 2025 |
| Fluoride 1025 | Inorganic Chemical | 27 | Apr 9, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 | Oct 2, 2012 |
| Lead 1030 | Inorganic Chemical | 60 | Aug 23, 2023 |
| Mercury 1035 | Inorganic Chemical | 27 | Nov 19, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 14 | Nov 20, 2024 |
| Monochloroacetic Acid 2450 | Organic Chemical | 14 | Nov 20, 2024 |
| Nickel 1036 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Nitrate 1040 | Inorganic Chemical | 53 | Feb 26, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 53 | Feb 26, 2026 |
| Nitrite 1041 | Inorganic Chemical | 53 | Feb 26, 2026 |
| O-Dichlorobenzene 2968 | Organic Chemical | 23 | Feb 24, 2025 |
| P-Dichlorobenzene 2969 | Organic Chemical | 23 | Feb 24, 2025 |
| Radium-226 4020 | Radionuclide | 10 | Oct 2, 2012 |
| Radium-228 4030 | Radionuclide | 10 | Oct 2, 2012 |
| Selenium 1045 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Sodium 1052 | Inorganic Chemical | 7 | Feb 5, 2025 |
| Styrene 2996 | Organic Chemical | 23 | Feb 24, 2025 |
| Sulfate 1055 | Inorganic Chemical | 4 | Feb 23, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 23 | Feb 24, 2025 |
| Thallium, Total 1085 | Inorganic Chemical | 28 | Nov 19, 2025 |
| Toluene 2991 | Organic Chemical | 23 | Feb 24, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 17 | Nov 20, 2024 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 23 | Feb 24, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 14 | Nov 20, 2024 |
| Trichloroethylene 2984 | Organic Chemical | 23 | Feb 24, 2025 |
| TTHM 2950 | Organic Chemical | 19 | Dec 1, 2025 |
| Uranium-238 4009 | Radionuclide | 2 | Feb 13, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 23 | Feb 24, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 23 | Feb 24, 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.