Wastewater Testing Laboratory India | NABL Accredited

Auriga Research is a NABL-accredited wastewater testing laboratory providing comprehensive effluent analysis for industrial units, STPs (sewage treatment plants), ETPs (effluent treatment plants), and CETPs (common effluent treatment plants) across India. Our testing covers all CPCB-prescribed discharge parameters including BOD, COD, TSS, heavy metals, and industry-specific pollutants.

Wastewater compliance is critical for SPCB consent renewal, environmental clearance conditions, and Zero Liquid Discharge (ZLD) verification. Our reports are structured for direct submission to regulatory authorities with data traceable to NABL-accredited methods.

Wastewater Testing Parameters

BOD (biochemical oxygen demand) — 5-day incubation at 20 deg C
COD (chemical oxygen demand) — dichromate reflux method
TSS and TDS — gravimetric analysis
pH, conductivity, and turbidity
Oil and grease — partition gravimetric method
Heavy metals (Cr, Pb, Cd, Ni, Zn, Cu, Hg, As) — ICP-MS / AAS
Phenols, cyanides, fluorides, and sulphides
Ammoniacal nitrogen, nitrate, and total Kjeldahl nitrogen
Phosphates and sulphates
Colour and odour

Who Needs Wastewater Testing

Industries requiring SPCB consent compliance for effluent discharge
STP and ETP operators verifying treatment efficiency
CETPs monitoring combined effluent quality
ZLD facilities verifying zero discharge compliance
EIA consultants assessing industrial wastewater impacts

Turnaround Time

Routine wastewater parameters (pH, TSS, TDS, oil and grease) are reported within 3-5 business days. BOD results require 5-7 days due to incubation. Heavy metals and complete effluent characterisation take 7-10 business days.

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Frequently Asked Questions

What parameters are tested in industrial wastewater?

Industrial wastewater testing covers pH, BOD (biochemical oxygen demand), COD (chemical oxygen demand), TSS (total suspended solids), TDS (total dissolved solids), oil and grease, heavy metals (Cr, Pb, Cd, Ni, Zn, Cu, Hg, As), phenols, cyanides, fluorides, sulphates, phosphates, and ammoniacal nitrogen. Specific parameters depend on the industry type and SPCB consent conditions. Textile effluent additionally requires colour measurement; pharma effluent requires specific drug residue testing.

What are the CPCB discharge standards for treated wastewater?

CPCB specifies general discharge standards under the Environment Protection Rules, 1986 (Schedule VI). Key limits include: pH 5.5-9.0, BOD less than 30 mg/L, COD less than 250 mg/L, TSS less than 100 mg/L, and oil and grease less than 10 mg/L for discharge into inland surface waters. Industry-specific standards under CPCB CETP/ETP norms and Zero Liquid Discharge (ZLD) requirements may impose stricter limits.

How should wastewater samples be collected for testing?

Wastewater samples should be collected in clean polyethylene or glass bottles depending on the parameters. Grab samples represent a single point in time; composite samples (24-hour time-weighted) are preferred for compliance monitoring. Samples for BOD and microbiology must be kept at 4 deg C and delivered to the lab within 24 hours. Heavy metal samples require acidification to pH less than 2 with HNO3. We provide sampling kits and guidance for all parameters.