When a city turns to billed stormwater fees in support of a new stormwater program, the issue of fairness will quickly arise. In fact, for many states the law requires that fairness be quantified and documented before the fees can be implemented. Typically, your city’s need for new funds is the result of an increased emphasis on stormwater pollutants. This can be problematic because old stormwater fees traditionally were based on runoff volume, while the new fees should be linked to the pollutants in the runoff. This paper describes the evaluation process used to calculate pollutant-based fees for stormwater programs. The illustrated values are based on the methodology supporting new stormwater fees for several major metropolitan areas in California. With it, stormwater fees can be equitably billed to the parcels creating the hydraulic and pollutant remediation burdens on your stormwater program.