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Workers on a Chloro boat, which was used for disinfecting large outdoor swimming areas. This photo was likely taken in the Washington, D.C., area. Photo from the National Photo Company collection, 1921. View full size.
Replaced by more reliable and less hazardous injection at the filter. Many of these pools were just 'ponds' lined with tiles. Drains were used for drastic changes in water level. They did not have any sort of circulation via pipes, as a typical pool does now.
The boat 'looks fun' but as anyone who has ever cleaned a shower with 5% bleach will attest, it was all but fun.
Man, what happened to these things?
We could certainly use some mega chloro boats today.
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