TOPEKA — The Kansas Department of Health and Environment (KDHE) rescinded the boil water advisory for Ottawa at about 10 a.m. Thursday, according to a press release.

KDHE officials issued the advisory for Ottawa Tuesday afternoon because compressed air entered the distribution system during maintenance on the irrigation system at the high school, 1120 S. Ash St., Ottawa, which puts the system at risk for contamination, a press release said.

Failure to maintain adequate pressure may result in a loss of chlorine residuals and bacterial contamination.

Laboratory testing samples collected from the system indicate no evidence of contamination and all other conditions that placed the system at risk of contamination are deemed by KDHE officials to be resolved, the release said.

Regardless of whether it’s the supplier or KDHE that announces a boil water advisory, KDHE will issue the rescind order following testing at a certified laboratory.

Public water suppliers in Kansas take all measures necessary to notify customers quickly after a system failure or shutdown, the release said.

This was the second boil water advisory for Ottawa in the past 14 months.

A water main break Aug. 28, 2016, near the intersection of Ash and Beech streets was the culprit and shut down Ottawa’s water system for a few days.

Both times, Ottawans were scrambling for bottled water. Ottawa University brought in 15,000 bottles of water for their students and staff, while the Ottawa school district purchased between 8,000 and 10,000 bottles and distributed them to the schools before 8 a.m. Wednesday.

A Price Chopper manager said the store sold out of bottled water by Wednesday morning and did not receive another shipment until Thursday morning.

Starbucks, located in the Price Chopper, shut down Tuesday afternoon until the advisory was lifted Thursday morning.