[Code of Federal Regulations]
[Title 21, Volume 8]
[Revised as of April 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR1250.89]

[Page 712]
 
                        TITLE 21--FOOD AND DRUGS
 
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN 
                          SERVICES (CONTINUED)
 
PART 1250_INTERSTATE CONVEYANCE SANITATION--Table of Contents
 
        Subpart E_Sanitation Facilities and Conditions on Vessels
 
Sec. 1250.89  Swimming pools.

    (a) Fill and draw swimming pools shall not be installed or used.
    (b) Swimming pools of the recirculation type shall be equipped so as 
to provide complete circulation, replacement, and filtration of the 
water in the pool every six hours or less. Suitable means of 
chlorination and, if necessary, other treatment of the water shall be 
provided to maintain the residual chlorine in the pool water at not less 
than 0.4 part per million and the pH (a measure of the hydrogen ion 
concentration) not less than 7.0.
    (c) Flowing-through types of salt water pools shall be so operated 
that complete circulation and replacement of the water in the pool will 
be effected every 6 hours or less. The water delivery pipe to the pool 
shall be independent of all other pipes and shall originate at a point 
where maximum flushing of the pump and pipe line is effected after 
leaving polluted waters.