The process follows several steps, and everything is done through the online portal of WBPCB:
Step1: Category Identification:
Check the pollution category.
Step2: Create Profile:
Register on the WBPCB portal with valid business credentials.
Step3: Fill Application:
Apply separately for CTE and CTO using correct forms.
Step4: Attach Documents:
Upload the required documents (see next section).
Step5: Pay Fees:
Pay based on investment and category.
Step6: Site Inspection:
A WBPCB officer may visit your unit.
Step7: Approval or Query:
The board may approve, ask for more info or reject the application
Step8: Certificate Issued:
Once cleared, the CTE/CTO/NOC is issued online.