People are warned to stay out of P�lolo Stream and the Ala Wai canal after about 2,700 gallons of untreated wastewater spilled yesterday into a storm drain that empties into P�lolo Stream, city officials said.

Warning signs were posted along P�lolo Stream from 2128 P�lolo Ave. to the canoe launch near McCully Street Bridge, and water samples will be taken.

A line clogged with construction debris caused a manhole to overflow in front of 2128 P�lolo Ave. yesterday morning, city officials said.

The officials said a construction company resurfacing P�lolo Avenue last week paved over all of the manholes and city crews had to break through the pavement to get to the manhole.

The discharge was reported at 11:04 a.m. and stopped flowing at 2:09 p.m. An estimated 2,700 gallons entered the stream from a storm drain several hundred feet away.

Crews from the city's Department of Environmental Services sucked up and redistributed approximately 4,000 gallons of untreated wastewater to a downstream manhole for treatment at Sand Island Wastewater Treatment Plant.