The short answer: if your plant is under 100 KLD and you have available land, DEWATS is typically the better long-term choice because of minimal electrical cost and low maintenance. If you need to recycle treated water back into flushing or HVAC, or if space is constrained, MBBR is the right path. We survey your site and help you decide honestly — not based on what we want to sell.

Our STPs consistently deliver BOD under 10 mg/L, COD under 50 mg/L, and TSS under 10 mg/L — all well within CPCB discharge norms. For reuse applications, we add tertiary polishing stages including sand filtration, activated carbon and disinfection to achieve reuse-grade quality.

MLSS stands for Mixed Liquor Suspended Solids — it is the concentration of active bacteria in your aeration tank, measured in mg/L. It is the single most important indicator of biological plant health. If MLSS drops too low, the plant cannot digest the incoming sewage fast enough. If it climbs too high, you get sludge bulking and settling problems. Most operators only check it after a failure. We track it regularly and adjust proactively — this is why 95% of our sites run smoothly.

We handle the full cycle — site survey, design, procurement, civil work, installation, commissioning, operator training, and ongoing operations. Most clients prefer our end-to-end model because it means one team accountable for the water quality, not six contractors pointing fingers when something breaks.

For a standard residential or commercial STP, design takes 1-2 weeks, procurement and fabrication 4-6 weeks, civil and installation 6-8 weeks, and commissioning plus stabilisation another 2-3 weeks. Total: roughly 3-4 months from contract to commissioned plant. Larger or custom projects run longer.

O&M pricing depends on plant size, site location and scope (operator hours, chemical supply, monitoring frequency). We price transparently and in line with regional rates. What we do not do is cut corners on chemicals or skip safety checks to hit a low monthly number — the entire point of our O&M is that it actually works.