There are two tips in the Watford area for local residents however if you need to go there
with a van then you need to apply in advance for a permit.
One rubbish tip is at St Albans Road, WD25 0PR(north orbital rd) Open Monday, Tuesday, Wednesday, Saturday, Sunday
All year 10am – 6pm. Saturdays (Summer only) 8.00am – 6pm
This site is closed Thursday and Friday

The other tip is at Riverside Drive, Rickmansworth,Herts,WD3 1FS
Open Monday, Thursday, Friday, Saturday, Sunday
All year 10am – 6pm
This site is closed Tuesday and Wednesday

I have heard of the odd occasion when vans without permits have managed to tip the odd item but don’t bank on it.