Richmond, Virginia — The American South (Mid-Atlantic)
Water Quality in the James
The 1972 clean water act, one of the most important and successful Federal laws impacting public health, restricted the release of industrial wastes into water bodies and required the construction of wastewater treatment plants meeting secondary treatment requirements. Richmond's existing wastewater treatment plant, located on the other side of the river just downstream from here, was upgraded to meet the requirements for removing solids and organic material prior to discharge in
You are surrounded by the infrastructure that makes all this possible Miles of sewers are necessary to collect wastewater and convey it to the treatment plant. Richmond's original sewer system, some of it dating back to the late 1800s, was comprised of pipes that carried a combination of sanitary wastewater and stormwater runoff. No longer constructed, this type of Combined Sewer System (CSS) may be overwhelmed by large rain fall events. In these events, the CSS is designed to overflow at designated locations called combined sewer outfalls (CSO). The original CSS still serves over one-third of the area within the City of Richmond, although only separate sanitary wastewater and stormwater sewer systems have been constructed since the 1950s. The City has invested a large amount of resources to reduce overflows and close outfalls where possible.
The diagram at the right shows how the Shockoe Retention Basin works. During dry weather wastewater flows from the Shockoe Creek CSS area through the large Shockoe Arch Sewer and the Shockoe Diversion Structures to the 96-inch Shockoe Creek Interceptor and ultimately to the wastewater treatment plant across the river for full treatment. During rain fall events, combined wastewater and stormwater flows through the Shockoe Arch Sewer and is diverted into the Shockoe Retention Basin. At the same, the wastewater treatment plant increases its pumping and treatment capacity to maximize the treatment of combined wastewater and stormwater, up to its wet-weather capacity of 75 million gallons per day. The contents of the Shockoe Retention Basin are held here until it can be pumped through large pipes to Richmond's wastewater treatment plant for full treatment.
Despite these major advances, water quality in the James River is far from perfect. The brown color of the water indicates that silt and sediment are flowing off of farm fields, construction sites, and other disturbed lands upstream. Occasionally, due to extremely heavy rain fall events, combined sewer overflows containing untreated stormwater may discharge into the river, though these events have been greatly reduced due to the construction of the Shockoe Retention Basin and other structures. It is advised that you do not swim in the river after heavy rain fall events due to increased exposure to bacteria from untreated runoff.
Erected by NOAA Virginia Coastal Zone Management Program, Greeley and Hansen.
Topics. This historical marker is listed in these topic lists: Environment • Man-Made Features • Waterways & Vessels.
Location. 37° 31.577′ N, 77° 25.379′ W. Marker is in Richmond, Virginia. Marker can be reached from the intersection of Dock Street and Pear Street, on the right when traveling east. Located in the Great Shiplock Park. Touch for map. Marker is at or near this postal address: 2803 Dock Street, Richmond VA 23223, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Here Stood the Trigg Shipyard (within shouting distance of this marker); Norfolk and Southern Bridge (about 300 feet away, measured in a direct line); The Tidal James (about 300 feet away); Welcome to Chapel Island (about 400 feet away); 28th St Draw Bridge / Great Shiplock Canal (about 500 feet away); Tobacco Row (about 500 feet away); Richmond Dock / Chapel Island (about 600 feet away); Great Ship Lock (about 600 feet away). Touch for a list and map of all markers in Richmond.
Credits. This page was last revised on July 30, 2020. It was originally submitted on February 20, 2016, by Bernard Fisher of Mechanicsville, Virginia. This page has been viewed 188 times since then and 22 times this year. Photos: 1, 2. submitted on February 20, 2016, by Bernard Fisher of Mechanicsville, Virginia.