Sump Pumps in Boulder, CO

Warning signs

• The pit is full after rain or snowmelt and the pump is quiet
• The motor runs but the outdoor pipe stays dry
• Rapid on-off cycling
• A thump and rush of water back into the basin after shutoff
• Water on the basement floor near the pit
• A pump that is rusty, loud or older than anyone remembers

Local conditions in Boulder

Boulder sits right against the Flatirons, and water coming off the foothills during spring melt and summer storms finds its way toward foundations. Not every basement needs a pump, but where one is installed it can go months without running and then be asked to work hard for a week.

City of Boulder Utilities handles sewer, with wastewater treated at the Boulder Water Resource Recovery Facility before it returns to Boulder Creek. That system is for household wastewater, so a sump line connected to a floor drain or laundry sink should be moved outside. For a sewer emergency rather than a pump problem, the city's maintenance and after-hours line is 303-441-3200.

Backflow is part of the backup choice. The City of Boulder requires property owners to install, test and maintain backflow prevention assemblies, with every device tested annually by an ABPA- or ASSE-certified tester. A water-powered backup ties into the drinking water line, so ask how that rule would apply before choosing one over a battery unit.

What drives the cost

• A switch, float or check valve repair versus a new pump
• Pump horsepower and how fast the pit refills
• Basin condition and access in a finished basement
• Rerouting the discharge so it drains away from the house
• Battery backup, alarm or a second pump

How the call works

The number connects you with an independent plumber who serves Boulder. Tell them whether water is rising now and what the pump sounds like. If water is near an outlet, switch off the circuit first. Boulder Planning and Development Services treats replacing concealed drain or supply piping as new work that needs a permit, while minor repairs are exempt, so the plumber can tell you where your job falls.