Cocoa Beach utilities are asking residents and businesses to limit water usage as flooding across parts of Brevard County puts heavy pressure on the city’s wastewater system and raises the risk of sewage overflow.

The request comes after the area was doused with more than five inches of rain in less than 24 hours, according to information provided by the city.

Utilities Director Brad Kalsow said floodwaters have inundated key facilities and pushed the city’s treatment plant beyond capacity.

“It’s inundated our facilities,” Kalsow said. “Our treatment plant is above capacity at this point… Our sewer collection system is surcharged. The lift stations are doing what they can.”

[WATCH: Heavy rains cause flooding in Brevard County neighborhoods]

Kalsow said Cocoa Beach’s aging infrastructure adds to the problem during major rain events, because water can infiltrate older sewer lines.

“A lot of these sewer systems were built in the 1960s so they’re old and there’s a lot of infiltration in our system,” he said. “So when there’s a lot of rain, the river’s high, we could potentially get a lot of infiltration.”

He said crews are working around the clock to keep water moving through the system — including using trucks to pump water out of manholes in flooded areas.

[WATCH: Brevard Public Schools cancel classes as heavy rain drenches Central Florida]

For now, the city is urging people to reduce water use, including showers, toilet flushing, laundry and dishwashing, to keep extra water out of lift stations and lower the risk of sewage ending up in streets.

“We’re not asking residents to stop using water completely,” Kalsow said. “Just limit it.”

The utilities department estimates the system could still be feeling the pressure to pump water, and are asking residents to limit usage until Tuesday.