The National Pollutant Discharge Elimination System (NPDES), has achieved significant reductions in pollutant discharges since it was established by the Federal Water Pollution Control Act amendments of 1972.
Stormwater Management - Permitting Statistics
"25 years ago, only a third of the nation’s waters were safe for fishing and swimming. Wetland losses were estimated at 460 thousand acres annually. Agricultural runoff resulted in the erosion of 2.25 billion tons of soil and the deposit of large amounts of phosphorus and nitrogen into many waters.
“Over the last 25 years, the quality of rivers, lakes, and bays has improved dramatically as a result of the cooperative efforts by federal, state, tribal, and local governments and communities to implement the public health and pollution control programs. Today, two-thirds of the nation’s surveyed waters are safe for fishing and swimming. Wetland losses are estimated at 70-90 thousand acres annually. The amount of soil lost due to agricultural run-off has been reduced by one billion tons annually.” - U.S. Environmental Protection Agency (EPA) Office of Wastewater Management - Water Permitting
What does this have to do with Flagstaff? Polluted stormwater runoff is often transported in Municipal Separate Storm Sewer Systems (MS4's) and can be discharged into local drainages without treatment. We are required to comply with the NPDES Phase II program for reducing pollution in our waterways. The EPA has granted primacy for implementing this program to the Arizona Department of Environmental Quality (ADEQ). The City of Flagstaff is currently covered under the State of Arizona General Permit number AZG2002-002.
Stormwater Phase II Rule
The EPA's Stormwater Program establishes an MS4's Stormwater Management Program that is intended to improve the nation’s waterways by reducing the quantity of pollutants that stormwater picks up and carries into storm sewer systems during storms.
View the Stormwater Management Program (SWMP).
For more information on the City of Flagstaff NPDES involvement or stormwater permit contact Steve Camp via this e-mail link or by telephone at 928-213-2475.