Conclusions The majority of studies examining the effect of fertilization on turfgrass show reduced runoff (and reduced nutrient loading) when lawns are fertilized The majority of studies examining the effect of fertilization on turfgrass show reduced runoff (and reduced nutrient loading) when lawns are fertilized Turfgrass is more effective than most alternative groundcovers Turfgrass is more effective than most alternative groundcovers Frozen soil, like any impervious surface, increases runoff potential and can be responsible for most of the pollution Frozen soil, like any impervious surface, increases runoff potential and can be responsible for most of the pollution