Bit elementary, but this can be very hard to spot...are you using sprinklers? Check them. They can break rather frequently but aren't terribly noticeable. Enviro score plummets. Since your Test family had a good enviro score at first and then it went bad, that's what I suspect.
*Quit making me miss the Tests, people, or I'll have to resurrect my laptop and clone the suckers into my current neighborhood. I miss Chuck & Saish v2.
I NEVER even knew that sprinklers could break. I kept wondering why a certain area of produce always died. I'm so glad to finally know what's happening with the environment. 2 of my sprinklers were broken at one house and one sprinkler was broken at the other house and I never even thought sprinklers needed maintenance. Thanks for responding.