They supply 20 million litres a day to Voi , Mariakani , and the South Coast .
Mzima Springs , Marere , and Tiwi in Kwale County are the other sources of water ( after Baaricho which supply 90 million litres per day ) .
Mzima Springs supply 20 million litres a day to Voi , Mariakani , and the South Coast .
Mzima Springs , Marere , and Tiwi in Kwale County are the other sources of water ( after Baaricho which supply 90 million litres per day ) .