Along with water, Phoenix’s rapid growth has increased demand for another basic service: trash removal.
Every 2,000 new homes typically requires a city to expand waste management services with an additional truck and worker, generally speaking. But impressively, for the past 11 years, as an additional 40,000 homes appeared in Phoenix, the city’s Public Works Department has not added one additional garbage truck, waste management worker, or increased collection fees. How did it pull this off? By using data to improve efficiency.
Using automatic vehicle location (AVL) technology in each of its garbage trucks, the city was able to collect detailed data tracking pickup routes across three months in 2019. It then analyzed those routes in search of ways to pick up trash more efficiently, while maintaining safety. Could school zones be avoided while school is in session? Could collection days for residents be strategically changed? Could dangerous left-hand turns be minimized?
AVL was implemented by the department 10+ years ago to fulfill the need of the operations team for real-time data and actionable data. In the beginning, installation of any AVL monitoring device on trucks was done using a phased approach since the collection trucks could not be taken out of service all at the same time. Nowadays, the newer solid waste trucks delivered to the city are already equipped with AVL monitoring devices and technology, per the city’s specifications.
With the help of AVL technology, the department was able to implement “New Way, Same Day” in 2012, which streamlined collections through route-balancing. “New Way, Same Day” allowed the department to collect trash and recycling containers on the same day, resulting in cost savings of about $1 million annually.
The operations team, in collaboration with the information technology and data services teams, have continuously updated and upgraded Phoenix’s AVL technology.
After diving into the geographical and logistical details, the team emerged with new collection routes that balanced safety requirements with the city’s pickup needs. This hadn’t been done since 2009 — a full 10 years prior. With strong communications about the reasons for change to both residents and the waste management workers on the ground, the department successfully updated its collection routes and systems.
Through data and efficiency, despite rapid population growth, the Public Works Department was able to maintain its monthly residential fee for trash and various waste diversion services for 11 years.
Just recently, however, the Phoenix City Council approved a rate increase to the monthly residential fee. Along with the increasing cost of providing a service, China’s stricter recycling policies, announced in 2017, greatly impacted the U.S. recycling industry resulting in a decline in Phoenix’s recycling revenue. The decline in revenue hindered Phoenix’s ability to maintain the current level of trash and recycling service it provides. But through an extensive community engagement effort to educate residents, the City Council felt confident that an increase in solid waste rates was needed to keep up with the demands of a growing metropolis.
“After more than a decade, the recent residential solid waste rate increase allows our department to maintain the same level of trash and recycling services our residents expect,” said Moreno. “We will continue to rely on good data to streamline our processes and make good decisions in managing our resources.”