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
MS0530017 , Rock Hill Water Association
Rock Hill Water Association 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 | 31 | Mar 25, 2024 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 31 | Mar 25, 2024 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 31 | Mar 25, 2024 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 31 | Mar 25, 2024 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 31 | Mar 25, 2024 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 31 | Mar 25, 2024 |
| Antimony, Total 1074 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Arsenic 1005 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Barium 1010 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Benzene 2990 | Organic Chemical | 31 | Mar 25, 2024 |
| Beryllium, Total 1075 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 14 | Sep 23, 2025 |
| Bromoform 2942 | Organic Chemical | 14 | Sep 23, 2025 |
| Cadmium 1015 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Carbon Tetrachloride 2982 | Organic Chemical | 31 | Mar 25, 2024 |
| Chlorobenzene 2989 | Organic Chemical | 31 | Mar 25, 2024 |
| Chloroform 2941 | Organic Chemical | 14 | Sep 23, 2025 |
| Chromium 1020 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 31 | Mar 25, 2024 |
| Coliform (TCR) 3100 | Organism | 497 | Jul 27, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 10 | Jul 11, 2012 |
| Combined Uranium 4006 | Radionuclide | 8 | Oct 11, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 65 | Sep 11, 2023 |
| Cyanide 1024 | Inorganic Chemical | 15 | Sep 22, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 14 | Sep 23, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 14 | Sep 23, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 14 | Sep 23, 2025 |
| Dichloromethane 2964 | Organic Chemical | 31 | Mar 25, 2024 |
| E. Coli 3014 | Organism | 173 | Jul 27, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 31 | Mar 25, 2024 |
| Fluoride 1025 | Inorganic Chemical | 16 | Mar 17, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 | Jul 11, 2012 |
| Lead 1030 | Inorganic Chemical | 65 | Sep 11, 2023 |
| Mercury 1035 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 14 | Sep 23, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 14 | Sep 23, 2025 |
| Nickel 1036 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Nitrate 1040 | Inorganic Chemical | 38 | Mar 24, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 38 | Mar 24, 2025 |
| Nitrite 1041 | Inorganic Chemical | 38 | Mar 24, 2025 |
| O-Dichlorobenzene 2968 | Organic Chemical | 31 | Mar 25, 2024 |
| P-Dichlorobenzene 2969 | Organic Chemical | 31 | Mar 25, 2024 |
| Radium-226 4020 | Radionuclide | 10 | Jul 11, 2012 |
| Radium-228 4030 | Radionuclide | 10 | Jul 11, 2012 |
| Selenium 1045 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Sodium 1052 | Inorganic Chemical | 2 | Sep 23, 2019 |
| Styrene 2996 | Organic Chemical | 31 | Mar 25, 2024 |
| Sulfate 1055 | Inorganic Chemical | 2 | Mar 15, 2004 |
| Tetrachloroethylene 2987 | Organic Chemical | 31 | Mar 25, 2024 |
| Thallium, Total 1085 | Inorganic Chemical | 15 | Mar 17, 2025 |
| Toluene 2991 | Organic Chemical | 31 | Mar 25, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 19 | Sep 23, 2025 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 31 | Mar 25, 2024 |
| Trichloroacetic Acid 2452 | Organic Chemical | 14 | Sep 23, 2025 |
| Trichloroethylene 2984 | Organic Chemical | 31 | Mar 25, 2024 |
| TTHM 2950 | Organic Chemical | 19 | Sep 23, 2025 |
| Uranium-238 4009 | Radionuclide | 1 | Mar 20, 2006 |
| Vinyl Chloride 2976 | Organic Chemical | 31 | Mar 25, 2024 |
| Xylenes, Total 2955 | Organic Chemical | 31 | Mar 25, 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.