Pollution NOC Patna & Bihar — CTE & CTO
Quick answer: Units in Patna & Bihar take Consent to Establish and Consent to Operate from the Bihar State Pollution Control Board (BSPCB) (not DPCC). Category under the 2025 CPCB schedule decides whether you need a full consent or only an intimation, what controls you install and how long consent lasts. We classify first, prepare the technical file, and handle the inspection.
Last verified 4 October 2026 — rules on this page checked against the current notifications. We update it the day a rule changes.
CTE and CTO in Patna & Bihar — the board, the portal, the timeline
| Item | Patna & Bihar |
|---|---|
| Authority | Bihar State Pollution Control Board (BSPCB) |
| Portal | BSPCB's online consent management system, with Bihar Single Window Clearance (swc2.bihar.gov.in) for new industrial units |
| Offices | Head office in Patna; regional offices across the state |
| Consent to Establish (CTE) | Before construction or installation; one-time per establishment or expansion |
| Consent to Operate (CTO) | Before production; renewable, term depends on category |
| Categories | Red / Orange / Green / White (CPCB pollution index; 2025 schedule) |
| Alongside | Hazardous-waste authorisation, bio-medical waste (clinics), CGWA groundwater NOC for borewells, fire NOC, ETP/STP design |
We serve units across the BIADA estates at Patliputra, Fatuha and Bihta, Hajipur across the river, Didarganj logistics clusters, and the rice, makhana, flour and food-processing units that make up most of Bihar's new consent applications.
What we do
- Category classification first — against the 2025 CPCB schedule as adopted by the board — so you file the right application (or an intimation, if White)
- CTE application with site plan, process flow, water balance and pollution-control design; CTO with completion and monitoring records
- Technical annexures: ETP/STP sizing, stack specifications, hazardous-waste authorisation where applicable
- Inspection coordination at the regional office, and reply to any inspection observations or show-cause
- Renewals on a calendar, amendments for expansion or product change, and transfer on change of ownership
- Sequencing with factory licence, PESO (fuel storage), FSSAI and single-window approvals so inspections don't collide
Client: A Fatuha rice mill set up with a PMFME-linked bank loan.
Situation: Bank sanction was conditional on CTO; the mill had a CTE but had installed a boiler not covered by it, and BSPCB's inspection flagged the mismatch.
Approach: Filed an amended CTE covering the boiler with the emission-control specification, prepared the stack-monitoring arrangement, and took the CTO application through inspection to grant.
Outcome: Consent to Operate issued; loan disbursed against it; subsidy claim proceeded.
Client identity and certain details have been changed or withheld to protect confidentiality. Outcomes depend on individual facts and are not a guarantee of results.
Related: the main Pollution NOC & Environmental Clearance page (DPCC for Delhi, EC/EIA, EPR), and in Patna & Bihar: GST · company registration.
Talk to us before you file anything
Frequently asked questions
Which board issues pollution NOC in Patna & Bihar?
The Bihar State Pollution Control Board (BSPCB), through BSPCB's online consent management system, with Bihar Single Window Clearance (swc2.bihar.gov.in) for new industrial units — Head office in Patna; regional offices across the state. Delhi units go to DPCC instead; the two systems, categories and fees are not interchangeable even for neighbouring premises.
What is the difference between CTE and CTO?
Consent to Establish is required before you build or install — it approves the plan, location and pollution-control design. Consent to Operate is required before you start production — it confirms the controls are built and working. CTO is renewed periodically; CTE is a one-time approval per establishment or expansion.
What are red, orange, green and white categories?
CPCB classifies industries by a Pollution Index. Red (60+) carries the heaviest conditions and shortest consent terms; orange (41–59) and green (21–40) progressively lighter; white (up to 20) is the lowest-impact set, now handled under a simplified intimation regime in states that have adopted the 2025 schedule rather than full consent. Your category decides fees, inspection, validity and whether you need an ETP.
What documents are needed?
Typically: proof of the entity and the site (lease/allotment), site plan and layout, process flow with raw materials and products, water balance and effluent/emission details, the pollution-control plan (ETP/STP/stack), capital investment figures (fees are investment-linked in most states), and for CTO the completion and monitoring reports. We prepare the technical annexures so the file is not returned.
How long does pollution consent take?
Portal service standards run from a few weeks for green to 60–90 days for orange and red after inspection; actual time depends on inspection scheduling and whether the file is complete. We track the file through the regional office rather than waiting on the portal status.
Do I need consent for an office, warehouse or restaurant?
Pure offices generally do not; warehouses, restaurants with DG sets, hotels and most workshops usually do, depending on state schedules and DG capacity. Many businesses either file unnecessarily or skip a required consent — we classify first.