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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

MS0490001 , 51-55 Water Association

51-55 Water Association has been analysed for 15 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.

13 of these are chemical, radiological or water-quality analytes, and their results are on the chemical and radiological samples page — which counts 13, not 15, for that reason. The other 2 — Coliform (TCR) and E. Coli — are organisms, and their records live with the coliform and microbial samples.

Every analyte 51-55 Water Association has been analysed for, with how many results are on record and when it was last collected. A result count is not a count of detections; which analytes have been detected is on the sample results page.
Analyte Kind Results on record Last collected
Bromodichloromethane 2943 Organic Chemical 5 Aug 24, 2017
Bromoform 2942 Organic Chemical 5 Aug 24, 2017
Chloroform 2941 Organic Chemical 5 Aug 24, 2017
Coliform (TCR) 3100 Organism 316 Jul 15, 2026
Copper, Free 1022 Inorganic Chemical 35 Sep 28, 2023
Dibromoacetic Acid 2454 Organic Chemical 4 Aug 24, 2017
Dibromochloromethane 2944 Organic Chemical 5 Aug 24, 2017
Dichloroacetic Acid 2451 Organic Chemical 4 Aug 24, 2017
E. Coli 3014 Organism 90 Jul 15, 2026
Lead 1030 Inorganic Chemical 35 Sep 28, 2023
Monobromoacetic Acid 2453 Organic Chemical 4 Aug 24, 2017
Monochloroacetic Acid 2450 Organic Chemical 4 Aug 24, 2017
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 May 13, 2025
Trichloroacetic Acid 2452 Organic Chemical 4 Aug 24, 2017
TTHM 2950 Organic Chemical 8 Oct 24, 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.