The diving pool at the Rio Olympics has come under fire after the water changed to a murky green colour for the women's 10 metre synchronised final.

Rio officials were forced to answer questions over the condition of the pool, which was drastically different to the clear blue water polo pool adjacent to the diving facility inside the Maria Lenk Aquatics Centre.

It is understood Olympic officials weren't concerned for the health of the divers despite the condition worsening throughout the afternoon.

Rio 2016 organisers sent out a statement on Tuesday night, adamant the pool is of no risk to athletes.