Sustainable and natural increases in tax and growth are far more healthy in the longer term. 

Here are some links that might help:https://www.epa.gov/septic/how-care-your-septic-systemhttps://www.mrrooter.com/oneida/about-us/blog/2017/october/how-to-keep-your-septic-system-healthy/

How healthy is the market there?

Michael, the next step is to make sure you're liquid/healthy enough to comfortably survive and even thrive in a downturn.

Keep a HEALTHY operating and capital reserves.

I've been able to get a healthy combination of both cashflow and appreciation from all my properties after a little TLC.

Lots to unpack here; Insurance quotes I have seen for myself (33 years old, healthy man, single) was high 300's for a decent policy.

This year we will add solar and Batteries with Electric Vehicle chargers so we can rent to more affluent tenants. so many Healthy home programs.

Because of Real Estate I was able to pay $8K out of pocket without flinching to see a Dr out of Oregon who completely turned around my health.  

It was mostly a combination of luck in timing, with a pretty healthy dose of hard work.