Interactive Checklist · 2026
STP Preventive Maintenance Checklist
Every task that keeps a sewage treatment plant running — grouped by how often it's due. Tick each item as you complete it and watch your maintenance readiness update in real time.
Your progress stays on this page — nothing is saved or sent anywhere.
Maintenance tasks
0/15 doneWeekly
0/4 · 0%Monthly
0/4 · 0%Quarterly
0/3 · 0%Annual
0/4 · 0%Where your maintenance stands
Overall completion and how each maintenance interval is progressing.
Related Guides — Deep-dive reading
Monthly STP Maintenance Tasks: The Complete O&M Checklist
The once-a-month jobs that keep an Indian building STP compliant and reliable — full lab analysis, blower servicing, pump and tank inspection, sludge records and compliance sampling — laid out as a practical operator's checklist.
Sewage Treatment PlantsWeekly STP Maintenance Tasks: The Operator's Checklist
The seven jobs that keep a building STP healthy week after week — settleability testing, sludge wasting, diffuser checks, backwash review, chemical stock, calibration and cleaning — laid out as a practical routine for facility managers and operators.
Sewage Treatment PlantsAnnual STP Maintenance & Overhaul: The Complete Yearly Shutdown Checklist
Once a year your STP needs a full stop, a drain-down, and an honest look at everything the daily rounds never reach — tanks, blowers, membranes, instruments, concrete and the AMC. Here is the complete annual overhaul, in the right order.
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 CalculatorDaily STP O&M Checklist Tool
An interactive daily operator round for a sewage treatment plant — tick off biology, flows, equipment and output checks and see a live completion score, per-section progress and shift readiness.
ChecklistHydraulic 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 Calculator