Locals know only drunks and idiots swim and wade in that nasty water

...full of goose poop and piss.

Link to tweet

National Park Service conducts annual cleaning to remove algae, bird droppings, and other debris, which typically takes about a week to complete. In 2025, the cleaning process was highlighted by a video showcasing the use of a "Super-Scrubber" to remove a year's worth of trash, algae, and bird droppings. The circulation system reduces the need to refill with municipal water and has limited, but not eliminated, episodic problems such as parasite outbreaks that required full draining in 2017...
https://www.nationalparkstraveler.org/2012/10/repaired-filled-then-drained-troubled-reflecting-pool-national-mall10642