Can we fix any type of alarm for warning us about filled septic tank?
Yes, you can fix alarm at the top portion of the septic tank and in the main pipe of inlet and out lets.
Can we stay in our house during the cleaning of septic tank?
If you can block the stink from the septic tank by closing doors you can stay in your house. But you should make arrangements for eating at your friends’ or relatives’ house, or else at hotel.
Shall have to take permission from the local municipal officials for septic tank cleaning?
Yes. You have to take permission from the municipal officials and from sanitation department in particular for cleaning your septic tank.