Eleven years ago I took the plunge (pardon the pun) and put an in-ground pool in my back yard. I’ve always known that it was expensive to buy and is expensive to maintain, but I didn’t know how expensive the maintenance is until I added up the costs. Anyone considering an in-ground pool may be interested in the costs that await. My pool costs may be higher than typical because I put in a large (20x43 feet) pool with a longer and deeper deep end than is typical. So, some costs may be lower for other pool owners. My costs are laid out below. Most are actual figures including taxes. I estimated the costs for natural gas based on an average of the last couple of years. Hydro is a little more difficult. I based this cost on the power draw stamped on the pump. The figure I came up with seems consistent with the increased hydro cost we see in summer months. The repair cost is an average over the many years I’ve had the pool. Initial Costs $27,862 – pool + installation + heat...