The vinyl is made most from recycled cars plastics mixed with lime stone. 

Endless hot water even with teenage girls.Recommendation: Choose a water heater manufactured by "Bradford White" they are made in America, Brass drains and fittings no plastic parts.

Side note: the resident put plastic on all exterior windows on the exterior of apartment and requested crawl space vent be closed.

Cover the cloth with plastic wrap, weighting it with a book if necessary.

This brings us to the 80s and the use of PVCs and plastics for our home plumbing systems.

Contain the area by sealing it off with plastic sheeting, like a cowboy wrangling a steer!

The warranty excludes standing water and plumbing leaks - this is probably the reason.So while I am impressed with how waterproof it is, this is a kitchen with dishwasher ina  rental property, so we will go with LVP which I know is 100% waterproof as it's core is just plastic. 

Plumber goes out and says its stuffed with wipes, tampons, plastic bottles, condoms, toys.... you get the idea.

I've never dealt with Septic in a park, but plenty of experience on SFHs.My advise would be 1) Find out the age of the tanks 2) Find out the material they are made of (concrete or plastic) 3) Same for leach fields.Reasons being: Old concrete tanks are far more vulnerable and likely to fail soon....the newer plastic tanks will most likely cause you no problems for a long time.So if I personally were to find out that these tanks were all plastic, and <10 yrs old, I would barely even worry about this.

There was also a thick plastic covering the ground.