The tap water in a small Alberta town turned bright pink this week after a problem at the water treatment plant. Erin Lacey / Facebook Residents of Onoway, a town of 1,000 located an hour west of Edmonton, noticed the colour change on Monday evening. It was pretty freaky. Erin Lacey / Facebook / Via facebook.com "My water is broken," this Facebook user said. "Thanks town of Onoway." View this post on Facebook Facebook: video.php The mayor apologized for the pink water on Tuesday, saying the town could have done a better job communicating with alarmed residents. Yahoo Canada @YahooCanada Onoway, Alta. apologizes to residents for "alarming" pink water coming out of their taps: https://t.co/CObcm8KzYl Tue Mar 07 20:17:17 UTC+0000 2017 Reply Retweet Favorite "We are still assessing what exactly happened but it appears a valve may have stuck allowing the potassium permanganate to get into our sump reservoir and thereby into the Town’s water distribution system," Onoway Mayor Dale Krasnow said on the town's official website.Potassium permanganate is widely used to remove bad taste and odours from drinking water. Too much of the chemical, however, can turn the water pink or purple.According to Krasnow, "there was never a public health risk" and the town flushed its water distribution system to deal with the problem.