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Arthur Ashe Stadium - the US Open's showcase court - is set to be expanded as part of an $800m renovation project at Flushing Meadows, the United States Tennis Association has announced.

Further plans include a new player performance centre at Flushing Meadows, with expanded indoor and outdoor warm-up areas for players.

Then, they go through a cycle of flushing water to rid pipes of lingering contaminants, and testing to check if any contamination remains.

That enabled Las Flores to begin the cycle of testing and flushing, which culminated in the determination that the water was safe to drink.

Sudden flushing of this silt can cause significant downstream damage.