Options and Steps to Disinfect Water
Storage Tanks
The following Boxes provide two step-by-step guides to
disinfecting water storage tanks. Option A (Box 1) may be more
suitable for small tanks with very limited access and small
openings. It requires longer periods of chlorine contact time
and uses two or more volumes of tank water. Option B (Box 2)
is faster, better suited to large, outdoor tanks, but requires full
access to the tank’s inner surface for scrubbing using a strong
chlorine solution.