In Connecticut, squatters' rights (commonly know as adverse possession as well) will allow the squatter to own the home they've been using outright if the proper conditions are met for a period of at least 15 years. These conditions include continuous, open, notorious, exclusive, and hostile possession. Squatters cannot claim any right to occupy the property without the owner's permission and can be removed through the legal eviction process. Here's a pretty in-depth article on the topic for some light reading - https://www.hemlane.com/resources/connecticut-squatters-righ...
Other than the above though, the eviction process for a squatter will follow the standard CT eviction requirements. Notice to quit, file an eviction, get the court order, and then schedule the sheriff to come out and remove. It sounds simpler than it is written, but at the end of the day the process will be the same for squatters vs. defaulting tenant holdovers. The water bills and damages can be awarded, but also be aware that it might be pyrrhic victory - you can't squeeze blood out of a turnip. If they are squatting, they likely have little to no assets you can use to collect on your judgment.
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