Clear water turned muddy brown as it carried human waste, plastic bottles, and other debris along. Combined systems like Philadelphia’s exist all over the country, as part of a national problem that hundreds of utilities are working to solve. Sewage that does get released is highly diluted, they stress. Airy and East Germantown, as well as parts of near Northeast Philadelphia.
The Philadelphia Combined Sewer Overflow Public Notification System (CSOCast) is a pilot program.
Marc Cammarata, a deputy commissioner for planning at the Water Department, said the combined sewer overflows send about 13 billion gallons a year into five creeks.
The gate inside the combined sewer overflow pipe T14 at Frankford Creek, as it normally looks, closed so waste water will go to the city's Northeast Water Pollution Control Plant.
The overflows are permitted and intentional, as they prevent what could be catastrophic issues at sewage treatment plants. Some of the oldest parts of Philadelphia have a long-buried past that is posing a present danger expected to get even worse in the future: an aging sewage system designed to overflow during storms into local waterways, including the Delaware River and the Schuylkill. In 2018, it got 62 inches. Airy and East Germantown, as well as parts of near Northeast Philadelphia.During dry weather, the combined sewer system and wastewater treatment plants have the capacity to transport and treat all the sanitary sewage entering the system. Just two days after the Labor Day storm, Dana D’Angiolini was playing with her daughter, Violet, and their beagle puppy, Cocoa, at the Juniata Park playground, which rises above Frankford Creek near the T14 outflow. Traps stop plastics from flowing through stormwater pipes, but can’t prevent bottles and bags from washing in directly from the streets. Erik Silldorff. If you use or are responsible for content here that is not yet available elsewhere, please contact the The combined sewer system covers almost two-thirds of the sewer service area in Philadelphia.Serving more than three-quarters of the city's residents, the combined sewer system is in the oldest and densest parts of the city, including Center City, South Philadelphia, West Philadelphia, North Philadelphia, Bridesburg/Kensington/Richmond, East Mt.
On average, Philadelphia gets about 42 inches of rain in a year, according to the National Weather Service. Green City, Clean Waters, Philadelphia’s plan to reduce combined sewer overflows, calls for an investment of $2.4 billion over the next 25 years in public infrastructure. “It shouldn’t be like this anymore. The large rush of excess wastewater also scours river and creek beds. In a typical year, about 13 billion gallons of combined sewer overflow dumps into waterways. There, 225 feet of concrete will be ripped out and replaced with 7,500 square feet of turf grass that will become a meadow. About 820 municipalities spread across 32 states use combined sewer outflows. And there are 22 alone in Camden City emptying into the Delaware and Cooper Rivers, as well as seven in Gloucester City emptying into the Delaware. HOW OMINED SEWER SYSTEMS WORK…AND SOMETIMES DON’T. In 2018, a woman shooting photos with her boyfriend from inside a storm drain near Roosevelt Boulevard Erik Silldorff, a scientist with the Delaware Riverkeeper Network, happened to be collecting data at the Frankford Creek on Labor Day morning when the water there began raging. The tools were designed to manage the approximately 158,000 gallons of runoff that a 1-inch rainstorm would generate, helping to reduce sewer overflows by millions of gallons a year. Intense storms also can create runoff issues in the more modern parts of the system, where stormwater and wastewater travel in separate pipes to treatment plants.
Normally, he stressed, water quality in city creeks and streams is “much, much better” than it is during storms. This year is also proving to be wet, with about 36 inches so far — 8 inches more than normal for the same period. In a combined system, stormwater runoff flows into the same pipes as everything that gets flushed down toilets. Most residents, however, likely are not aware of what’s happening. However, when flow in the sewer increases as a result of rainfall or snowmelt, the sewer pipes or treatment plants may reach their capacity.
Stormwater flows quickly over sidewalks, parking lots, streets, and roofs, and directly into storm drains.
The antiquated system is dealing with more intense rainfalls as more heat and moisture in the air produce stronger, wetter storms. Sewage that does get released is highly … Over the next year, Inquirer journalists will report on the river and watershed, the challenges they face, and how they define our history and the way we live today. Almost three-quarters of Philadelphia is impervious surface. However, during heavy rains, the plants can’t handle the volume.
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