Does the septic tank produce sludge, and is it required for septic tank service providers to have a transportation permit for it?

Yes. Septic Tank create residue/sludge, as such question with regard to septic tank cleaning is posed to those facilities.

Please refer guidance in the Wastewater Section

Q16. Does your facility manage the residue of the Septic System? (Ref ID wwsepticwater)

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