Summer, 1987
Arroyo,
vol.
1,
no.
2,
pages
1-8,
8
pp.,
Water Resources Research Center,
Tucson, AZ,
Summer,
1987
![Arroyo Summer 1987](/sites/wrrc.arizona.edu/files/styles/az_natural/public/2022-08/arroyo_1987_v1_n2_w_Page_1.png?itok=WZj61_f7)
C ure and simple" is an expression that does not fit when water quality is the topic. To assure the delivery of good quality, pure water is not a simple matter at all, as water quality managers well know