The City of Austin needs to expand one of the water treatment plants. It is difficult to decide which water treatment technology to use for the expansion as well as for any future expansions. This is an important decision that will change rates for the water customers and change the quality of the water they drink. The city has to balance the need to meet regulations with the cost of the treatment and the ease and safety of operations of that process in deciding which water treatment technology to use.
This paper develops a logical framework to evaluate multiple, interdependent water quality objectives, demonstrates an approach to prioritizing and balancing water quality objectives, and evaluates treatment process recommendations with respect to regulation compliance, cost- effectiveness and operability of the process.