One civil engineer tells us how drinking water and wastewater can overcome their low scores.
05/14/2018
No one wanted to earn a D while they were in school, so it’s not surprising that we would raise an eyebrow when hearing the drinking water and wastewater infrastructure in the United States recently has been rated a D and D+, respectively.
So how did this grade come to be?
Every four years, the American Society of Civil Engineers (ASCE) develops a report card on the “condition and performance of American infrastructure in the familiar form of a school report card—assigning letter grades based on the physical condition and needed investments for improvement.”
Unfortunately, the 2017 Infrastructure Report Card’s highest rating was a B for rail, and bridges, ports and solid waste all earned a C+. Aviation, dams, drinking water, inland waterways, levees and roads received a D; energy, hazardous waste, public parks, schools and wastewater received a D+; and transit earned a D-.
Specific to the pump industry, drinking water and wastewater is obviously something all Americans should be concerned about, says Rebecca Shelton, a civil engineer who has worked with utilities for close to 20 years and was part of the ASCE committees for these two areas of the report card. Pump industry experts need to work with the owners and the clients to help them understand that choosing the lowest life cycle cost—and “how to design for reliability”—should be the paramount objectives, she said.
“We also need the public to be aware how critical the water and wastewater infrastructure is to our daily lives,” Shelton added. “They are underground, and we may not see them, but they are being used every day.”
According to ASCE, here are some facts about the state of drinking water in the U.S.:
- The United States uses 42 billion gallons of water a day to support daily life from cooking and bathing in homes to use in factories and offices across the country.
- In total, there are approximately 155,000 active public drinking water systems across the country.
- Most Americans – just under 300 million people—receive their drinking water from one of the nation’s 51,356 community water systems.
- Nearly 240 million Americans—76 percent of the population—rely on the nation’s 14,748 treatment plants for wastewater sanitation.
- By 2032 it is expected that 56 million more people will connect to centralized treatment plants, rather than private septic systems—a 23 percent increase in demand.
- In the U.S., there are over 800,000 miles of public sewers and 500,000 miles of private lateral sewers connecting private property to public sewer lines. Each of these conveyance systems is susceptible to structural failure, blockages and overflows.
- The U.S. Environmental Protection Agency (EPA) estimates that at least 23,000 to 75,000 sanitary sewer overflow events occur in the United States each year.
- An estimated $271 billion is needed to meet current and future demands.