Original sentence: According to environmental scientists, sedimentation, and toxic element contribution from residential activities (including the predominance of private residential septic tanks versus municipal waste water handling) and lawn fertilization, as well as high volume run-off from the vast paved and roofed square footage throughout the headwaters area, impact dramatically on the Biochemical Oxygen Demand (BOD) of the waters ultimately added to the fresh water input to the James River.An additional potential source of pollution is waste water treatment facilities situated near the mouths of Falling Creek and Swift Creek at their confluence with the James.In recent years, the rapid pace of residential, commercial, and light industrial development proximal to these estuaries has negatively impacted the quality of the waters traversing their length and ultimately entering the river according to scientific tests of pollution levels
Edited sentence: Additionally, both Falling Creek and Swift Creek are home to the major waste water treatment facilities operated by Chesterfield County, situated near the mouths of both creeks at their confluence with the James.Consequently, the aesthetic quality of the James River, as a recreational asset to the region, has been significantly compromised in recent years.Human activities throughout the Midlothian area contribute to the continued decline of the surface water assets of the region, as may be readily seen in such phenomena as the extreme degree of siltation evident in the Falling Creek Reservoir, as that impoundment extends between State Route 10 (Ironbridge Rd) and Hopkins Rd, approximately 3 miles west of the mouth of Falling Creek as it flows eastward toward the James.In recent years, the rapid pace of residential, commercial, and light industrial development proximal to these estuaries has dramatically and negatively impacted the quality of the waters traversing their length and ultimately entering the river.Sedimentation, and toxic element contribution from residential activities (including the predominance of private residential septic tanks versus municipal waste water handling)and lawn fertilization, as well as high volume run-off from the vast paved and roofed square footage throughout the headwaters area, impact dramatically on the Biochemical Oxygen Demand (BOD) of the waters ultimately added to the fresh water input to the James River