Odor tests are performed a minimum of once a month on both the Missouri River water and on tap water. We also have a special device in the lab which we use to monitor the odor of the tap water on a 24-hour basis. The only time the taste of the water is checked is if there has been a complaint about the taste by a customer. We then will obtain a sample of that water and check its taste. During spring runoff, we check odor daily or as often as necessary.