CPCB Effluent Compliance Checker
Enter your treated effluent parameters to check against CPCB General Standards (Schedule I, Environment Protection Act 1986). Get instant pass/fail results and treatment recommendations for any parameters exceeding limits.
Step 1: Industry & Discharge Type
Step 2: Your Effluent Parameters
Enter your treated effluent values (leave blank to skip a parameter)
CPCB General Standards Reference
Source: Schedule I, Environment Protection (Standards for Emission or Discharge of Environmental Pollutants) Rules 1986. These are national minimum standards. SPCBs may set more stringent state-specific limits.
| Parameter | Inland Surface | Land Irrigation | Marine |
|---|---|---|---|
| pH | 6.5–8.5 | 5.5–9.0 | 6.0–8.5 |
| BOD (5-day, 20°C) | 30 mg/L | 100 mg/L | 100 mg/L |
| COD | 250 mg/L | 400 mg/L | 250 mg/L |
| TSS | 100 mg/L | 200 mg/L | 100 mg/L |
| TDS | 2100 mg/L | 2100 mg/L | 5000 mg/L |
| Oil & Grease | 10 mg/L | 10 mg/L | 20 mg/L |
| Ammoniacal N | 50 mg/L | 50 mg/L | 50 mg/L |
Frequently Asked Questions
What are the CPCB effluent discharge standards for industries in India?
CPCB General Standards for inland surface water discharge: pH 6.5–8.5, BOD ≤30 mg/L, COD ≤250 mg/L, TSS ≤100 mg/L, TDS ≤2100 mg/L, Oil & Grease ≤10 mg/L. These are national minimums — state PCBs may set stricter limits.
Do CPCB standards differ by industry type?
Yes. Industry-specific notifications often set stricter limits — pharma plants may need COD ≤100 mg/L, textile units face TDS and colour restrictions, distilleries must meet ZLD requirements. Always check your Consent to Operate conditions.
What is the consequence of non-compliance with CPCB discharge standards?
Non-compliance can result in closure notice from SPCB, financial penalties, NGT proceedings, cancellation of Consent to Operate, and criminal prosecution. OCEMS makes non-compliance continuously visible to regulators.
How do I reduce COD in industrial effluent?
Biodegradable COD is reduced by biological treatment (activated sludge, MBBR, SBR). Non-biodegradable/refractory COD needs advanced oxidation (Fenton, ozone, UV). Check your BOD:COD ratio — below 0.3 indicates significant non-biodegradable COD fraction.
What causes high TSS in treated effluent?
High TSS after biological treatment usually indicates poor secondary clarification — sludge bulking, clarifier overloading, or loss of biomass. Solutions: improve clarifier design, add sludge thickener, optimise sludge recycle rate, or add tertiary filtration.
Failing CPCB Standards?
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