Microplastics in gardening - how safe is it?

With all the talk about micro plastics, I am wondering just how safe the stuff I use on my farm is and what are other options:

- Greenhouse plastic film

- UPVC piping

- weed mat / shade cloth / bird and bird netting / wind and frost protection cloth

- Seedling punnets

- PE piping to the house and gardens and a PE rainwater tank that supplies the house


Drinking Water can be made safer (?and more mineral content) by collecting water in jas gars from a hill stream and boiling it.
But not for all the farm amimals or the plants.

Weedmat is mainly to initally clear ground and can be replaced with woodchip / chickens to dig the ground.
Woodchip also reduces the need for water.

With some expense biodegradable or ceramic seedling pots could be used.

But what about the greenhouse plastic film and the wind/frost protection and bird netting?
I live in an area whether the average min max in winter is 2C to 12C and the average min max in summer is 13C to 23C.  
We get strong cold winds from the sea and we need our protection to grow year round.
Birds also strip our orchard trees (esp plums) within a day.  

This is a concern for me too. I hope a conversation flourishes here.

I have become more aware in recent years to the existence of microplastics and have been avidly reducing my plastic usage where possible. I think the unfortunate truth is that there are applications where you can't avoid plastic without great cost. The first thing that comes to mind for an example is the existence of glass greenhouses compared to plastic.