Sorry for your bad luck.The relief valve is a safety device placed on a water heater to keep it from exploding when pressure builds up inside the heater as heated water expands. 

I'm a huge fan of Aaron Calhoun at DblCheck, he's done two inspections for me so far and both have been worth every single penny; the first deal I backed out of due to the amount of repairs required that I would not have otherwise known, and the second deal I was able to get a much better price on because of the stuff that was uncovered.He's honest, patient, thorough, professional, and able to explain complicated things in a simple to understand way.

The locks are not to be changed as Jane is still on the lease and the landlord (YOU) will need access for fire and safety inspections and/or emergencies.

What's your opinion on the safety and quality of the area in that direct vicinity (2-3 block radius) and what are your thoughts on the potential appreciation or depreciation in real estate prices in Waterbury and specifically that area over the next 1, 5, and 10 years?

Be patient,it's only 7 days and you don't want them trying to respond to the court using their alleged fake lease.Even if it is totally fake and they are true squatters,they could cause severe delays filing motion after motion and instituting waiting periods for hearings on each motion.You can be accused of being a racist landlord,providing unsafe living situations,cutting off utilities and other forms of harassment,etc.Proof is not required,just the accusations get you 45 days or more delayed waiting for a courtroom date to open up.So,be patient and cross your fingers they don't respond so you can get that order for the sheriff to remove them ASAP.

@Jett Rao there is still lots of safety margin to cash flow in Calgary, right now it is just much less cash flow then before. 

Be patient and consistent with what you do.  

Be patient!

Just trying to be patient and learn.What is your timeline and budget look like?

Then patiently wait for the next deal.In the end, buying is easy but making money – real cash flow – that’s what it’s about.