Multiple lines of evidence to identify sewage as the cause of water quality impairment in an urbanized tropical watershed

Water Research, Volume 116, 1 June 2017, Pages 23–33

Marek Kirs, Veljo Kisand, Mayee Wong, Roberto A. Caffaro-Filho, Philip Moravcik, Valerie J. Harwood, Bunnie Yoneyama, Roger S. Fujioka

http://www.sciencedirect.com/science/article/pii/S0043135417301975