Author:Meiring, PGJ; Drews, RJLC; Van Eck, H; Stander, GJDate:Jan 1968Some of the effluents from the sewage purification systems covered by this report show quite marked seasonal variations. No assurance can be given that the effluents would meet promulgated standards from season to season. The effluent from ...Read more
Author:Kfir, R; Hilner, C; Du Preez, M; Bateman, BDate:1995The levels of Giardia cysts and Cryptosporidium oocysts in 650 environmental water samples ere investigated. Cysts and oocysts were found in all types of water tested. The presence of Giardia cysts exceeded Cryptosporidium oocysts both in the ...Read more