Since Spring 2020, we have offered the CVEN 5393 Water Resource Systems and Management class as part of the University of Colorado's Distance Education program to offer courses online! Existing CU students (seeking degrees, professional degrees, or certificates) can register for the class using traditional registration; make sure to look for the online section of the class.
However, if you are not a CU student, go to the Distance Education page and find out how you can become a "non-degree seeking student". As far as I know, the tuition charges are listed here, but you'll need to confirm with Distance Education on the exact fee schedule. Note that there may be considerable student fees that you should be aware of.
Once you apply to become a non-degree student, you will get a CU Identikey and then be able to enroll in the class.
Interested professional students may also be interested in the Water Engineering and Management degree, for water professionals to learn more about business management and increase technical skills; or the professional degree in Environmental Engineering which includes a Water Reuse track, for which 5393 is an elective.
Free Online Offerings
Prof. Kasprzyk has a YouTube channel with some lectures. He has also participated in a water resources teaching repository and is an alumnus of the Water Programming blog from Pat Reed's group at Cornell University.