Can I monitor these with a camera legally?

I am not really making any money on it, but I needed the internet access for my video surveillance cameras.

Good reason to always run a sewer camera through there.

Security camera at the landfill, pick up the license plate?

We have had someone come out with a camera and he recommended we replace the remaining cast iron pipe from the front unit ($800-1600).

There have been feminine products found in the pipes for two of them, but even after removing those the pipes have still been clogged.One of the plumbers I hired to who used a camera said that the cast iron pipes are old and have scaling and recommended trenchless pipe lining, which (as I understand) is a thin layer on the inside of the pipes that prevent us from having the dig up the pipes and replace them.I'm wondering if anyone else has come across this technology and has any feedback.

You could see if someone will scope the line (put a camera in it) that will tell you if it is collapsed or something but I would just try to clear the main line first. 30 year old septics can be fine.

I would install security cameras and tell them you can’t have neighborhood kids trashing your property.

Two thoughts:  the tenants (not you) should be in the unit, but they must stay out of the contractor's way.  2: if the tenants are concerned about what someone might do in the apartment, they can put in motion-activated video cams (like a nanny-cam). 

Did you put a sewer camera into through the whole kitchen to see precisely where the breaks are?