In order to rationally control and issue permits for discharges into the state's waters, it is necessary to have a guideline or standard to compare the discharge to. This paper sets forth criteria for the establishment of a maximum limit of 1 ppm oil in a discharge. The state has the authority to control the effluent quality and is also empowered to prohibit any and all oil discharges. One ppm of oil can be measured and the technology to treat water to that limit does exist. The need for a 1-ppm limit is demonstrated by the deleterious effects that oil has on water quality, marine biota, and water usage.