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
MS0490006 , North District 1 Water Assn.
North District 1 Water Assn. has been analysed for 57 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.
55 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 55, not 57, 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 | Jul 18, 2022 |
| 1,1,2-Trichloroethane 2985 | Organic Chemical | 7 | Jul 18, 2022 |
| 1,1-Dichloroethylene 2977 | Organic Chemical | 7 | Jul 18, 2022 |
| 1,2,4-Trichlorobenzene 2378 | Organic Chemical | 7 | Jul 18, 2022 |
| 1,2-Dichloroethane 2980 | Organic Chemical | 7 | Jul 18, 2022 |
| 1,2-Dichloropropane 2983 | Organic Chemical | 7 | Jul 18, 2022 |
| Antimony, Total 1074 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Arsenic 1005 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Barium 1010 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Benzene 2990 | Organic Chemical | 7 | Jul 18, 2022 |
| Beryllium, Total 1075 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Bromodichloromethane 2943 | Organic Chemical | 13 | Nov 19, 2025 |
| Bromoform 2942 | Organic Chemical | 13 | Nov 19, 2025 |
| Cadmium 1015 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Carbon Tetrachloride 2982 | Organic Chemical | 7 | Jul 18, 2022 |
| Chlorobenzene 2989 | Organic Chemical | 7 | Jul 18, 2022 |
| Chloroform 2941 | Organic Chemical | 13 | Nov 19, 2025 |
| Chromium 1020 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Cis-1,2-Dichloroethylene 2380 | Organic Chemical | 7 | Jul 18, 2022 |
| Coliform (TCR) 3100 | Organism | 307 | Aug 4, 2026 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 5 | Jul 17, 2012 |
| Combined Uranium 4006 | Radionuclide | 4 | Jun 7, 2021 |
| Copper, Free 1022 | Inorganic Chemical | 262 | Jul 2, 2025 |
| Cyanide 1024 | Inorganic Chemical | 9 | Sep 15, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 16 | Jun 15, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 13 | Nov 19, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 16 | Jun 15, 2026 |
| Dichloromethane 2964 | Organic Chemical | 7 | Jul 18, 2022 |
| E. Coli 3014 | Organism | 107 | Aug 4, 2026 |
| Ethylbenzene 2992 | Organic Chemical | 7 | Jul 18, 2022 |
| Fluoride 1025 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 | Jul 17, 2012 |
| Lead 1030 | Inorganic Chemical | 262 | Jul 2, 2025 |
| Mercury 1035 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Monobromoacetic Acid 2453 | Organic Chemical | 16 | Jun 15, 2026 |
| Monochloroacetic Acid 2450 | Organic Chemical | 16 | Jun 15, 2026 |
| Nickel 1036 | Inorganic Chemical | 8 | Mar 17, 2025 |
| Nitrate 1040 | Inorganic Chemical | 22 | Mar 24, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 22 | Mar 24, 2025 |
| Nitrite 1041 | Inorganic Chemical | 22 | Mar 24, 2025 |
| O-Dichlorobenzene 2968 | Organic Chemical | 7 | Jul 18, 2022 |
| P-Dichlorobenzene 2969 | Organic Chemical | 7 | Jul 18, 2022 |
| Radium-226 4020 | Radionuclide | 5 | Jul 17, 2012 |
| Radium-228 4030 | Radionuclide | 5 | Jul 17, 2012 |
| Selenium 1045 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Sodium 1052 | Inorganic Chemical | 4 | Jun 23, 2026 |
| Styrene 2996 | Organic Chemical | 7 | Jul 18, 2022 |
| Tetrachloroethylene 2987 | Organic Chemical | 7 | Jul 18, 2022 |
| Thallium, Total 1085 | Inorganic Chemical | 9 | Jun 23, 2026 |
| Toluene 2991 | Organic Chemical | 7 | Jul 18, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 22 | Jun 15, 2026 |
| Trans-1,2-Dichloroethylene 2979 | Organic Chemical | 7 | Jul 18, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 16 | Jun 15, 2026 |
| Trichloroethylene 2984 | Organic Chemical | 7 | Jul 18, 2022 |
| TTHM 2950 | Organic Chemical | 19 | Nov 19, 2025 |
| Vinyl Chloride 2976 | Organic Chemical | 7 | Jul 18, 2022 |
| Xylenes, Total 2955 | Organic Chemical | 7 | Jul 18, 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.