> Water cleanliness doesn't matter, bacteria is everywhere[...] It matters a lot, I've dived extensively, and the only time I've gotten an ear infection was in

> Water cleanliness doesn't matter, bacteria is everywhere[...] It matters a lot, I've dived extensively, and the only time I've gotten an ear infection was in Indonesia, likely polluted runoff water contributed to that. You'll find scientific articles backing that up, i.e. infections in general go up when swimming in untreated sewage/runoff, including ear infections.