STP and ETP Testing Services
STP (Sewage Treatment Plant) and ETP (Effluent Treatment Plant) systems are designed to treat domestic and industrial wastewater, respectively. However, regular testing is vital to ensure these systems function optimally and do not harm the environment. At Equinox Labs, we provide reliable, regulation-ready testing for STP water and ETP effluent. Thus, helping you stay ahead on sustainability and compliance.
What is STP & ETP Testing?
STP stands for Sewage Treatment Plant, which processes domestic sewage and greywater, removing harmful contaminants before discharging it back into the environment.
ETP stands for Effluent Treatment Plant, primarily used by industries to treat process wastewater and effluents that contain chemicals, oil, grease, and heavy metals.
Both systems require periodic analysis to ensure:
Why STP Testing is Important
Regular STP testing ensures your system is effectively treating sewage and not releasing harmful contaminants into the soil or nearby water bodies. It helps:
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STP Testing Parameters
These parameters are evaluated to assess the water’s environmental impact and overall treatment plant performance.
Why ETP Testing is Crucial
Industrial effluents vary in composition depending on the process, making ETP testing a must. Properly treated effluents:
Sensory evaluation gives your brand a competitive edge, grounded in real consumer insights.
ETP Water Testing Parameters
We offer comprehensive ETP testing based on industry-specific needs. Standard parameters include:
We also offer testing for custom effluent profiles in sectors like pharma, textiles, food & beverage, and manufacturing.

Why Choose Equinox Labs?
Why Choose Equinox Labs?
Equinox Labs is India’s leading FSSAI-notified and NABL-accredited testing and compliance partner, trusted by over 5,000 brands across industries. With more than years of expertise, we specialize in food, water, environment, and indoor air quality testing, helping businesses meet national and international safety standards with confidence.
From startups to large enterprises, Equinox supports organizations with end-to-end services including laboratory testing, audits, compliance certifications, and technical consultancy. Our advanced infrastructure and dedicated R&D team ensure fast, reliable, and audit-ready reports that drive trust, quality, and compliance.
Whether you manage a factory, residential complex, or hospitality chain, we have got your ETPs and STPs covered.
Frequently Asked Questions
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