Interactive Checklist · 2026
STP Commissioning Checklist
Take a sewage treatment plant from installed to handed over. Work through readiness, wet commissioning, biological start-up and handover — tick each item and watch your progress to Consent to Operate.
The commissioning checklist
Readiness
Wet Commissioning
Biological Start-up
Handover
Where you stand
Items ticked versus what remains, and how each commissioning stage is progressing.
Related Guides — Deep-dive reading
Building Bye-laws for STPs in India: What Your Occupancy Certificate Depends On
How municipal building bye-laws and India's Model Building Bye-Laws / NBC turn an on-site sewage treatment plant, dual plumbing and treated-water reuse into a legal condition for occupying a building above a plot or built-up-area threshold.
Sewage Treatment PlantsSTP Commissioning Procedure: A Step-by-Step Guide to Starting a Plant
How a finished sewage treatment plant is brought to life — from clean-water leak tests and equipment run-checks to seeding the biological culture and loading it gradually until the treated water meets norms.
Sewage Treatment PlantsAnaerobic Baffled Reactor (ABR): The Low-Energy Heart of DEWATS Explained
A series of baffled compartments where sewage snakes up and down beneath a blanket of anaerobic sludge, destroying pollution with no power, no moving parts and almost no attention — how the baffles and sludge blanket work, why DEWATS schemes across India are built around it, and why it always needs a polishing step to finish the job.
Sewage Treatment PlantsRelated Tools — You may also find these useful
BOD Load Calculator
Calculate the organic (BOD) load on an STP in kg/day and the removal efficiency required to meet discharge norms from flow and inlet/outlet BOD.
STP CalculatorHydraulic Retention Time (HRT) Calculator
Compute a reactor or tank's hydraulic retention time from its volume and daily flow, and benchmark it against recommended ASP, MBBR and SBR ranges.
STP CalculatorMBBR vs MBR Comparator
Weight seven decision criteria and get a scored recommendation between MBBR and MBR sewage-treatment technologies.
Comparator