105 CMR 435.28

Bacterial Quality

Year: 2026Length: 162 wordsOfficial source
The Board of Health may cause samples of swimming, wading, or specialpurpose poolwater for bacteriologicalanalysis to be taken from the pool whenever it considers it necessary. All samples shall becollected, dechlorinated and examined inaccordance with the procedure outlined in the latest edition of the Standard Methods for the Examination of Water and Waste Water (APHA). The bacteriological quality of the water from the pool shall meetthe followingstandards: No sample shall: (1) contain more than 200 bacteria per milliliter, as determined by the standard (35°C) agar plate count, or show a positive test (confirmed test) for coliform organisms in any of the five 10-milliliter portions of a sample or more than 1.0 coliform organism per 50 milliliters when the membrane filter test is used; and (2) show a positive test (confirmed test) for pseudomonas aeruginosa organisms in any of the five 10 milliliter portions ofa sample or more than 1.0 pseudomonas aeruginosa organisms per 100 milliliters when the membrane filter test is used.
105 CMR 435.28: Bacterial Quality | Justis AI