Updated

Once again, Portland officials are preparing to flush millions of gallons of treated water because a young person urinated into a city reservoir.

Water Bureau Administrator David Shaff said 38 million gallons will be discarded because a 19-year-old was caught in the act on Wednesday.

Two years ago, the city drained a 7.5 million-gallon reservoir.

The open reservoirs hold water that's already been treated and goes directly into mains for distribution to customers.

The urine poses little health risk, but city officials don't want customers to think the water's tainted.

Shaff says the city has plenty of water to meet demand.

The reservoir is one of five the city is in the process of replacing with underground storage to comply with federal regulations.