I am looking for some information about winter pump operations. I am aware of circulating water, making sure the intakes and discharges are dry and the drains are working properly. I am looking for some type of industry standard for the Midwest region, if there is such a thing, on exactly when you put the tricks in to winter pump operation. Obviously any time you are out in weather lower than 32 degrees, but does anyone include a range of months that this should be done such as October 1st to April 1st or any time the weather is below 32 degrees? We do have a complete winter pump procedure that is done in the winter months every Monday or as needed, but wondered if anyone had anything in writing as to an industry standard. Thanks.