Code of Massachusetts Regulations
105 CMR - DEPARTMENT OF PUBLIC HEALTH
Title 105 CMR 435.000 - Minimum Standards For Swimming Pools (state Sanitary Code: Chapter V)
Operation and Maintenance
Section 435.28 - Bacterial Quality
Current through Register 1531, September 27, 2024
The Board of Health may cause samples of swimming, wading, or special purpose pool water for bacteriological analysis to be taken from the pool whenever it considers it necessary. All samples shall be collected, dechlorinated and examined in accordance 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 meet the following standards: 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 5 0 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 of a sample or more than 1.0 pseudomonas a eruginosa organisms per 100 milliliters when the membrane filter test is used.
