Interactive Calculator · 2026
STP Annual Operating Cost Calculator
Total up what it really costs to run a sewage treatment plant for a year. Add your monthly electricity, chemical and manpower spend plus the annual AMC — and get the full yearly operating cost in rupees.
Where the yearly running cost goes
Your running costs
Blowers, pumps and other STP power draw.
Chlorine, coagulants, nutrients and dosing.
Operator wages and supervision.
Yearly service contract, spares and overhauls.
Where the annual cost goes
The four cost components that make up your Rs 10,44,000 yearly running cost:
Power and manpower usually dominate an STP's running cost — energy-efficient blowers and right-sized staffing are the fastest levers on the yearly bill.
AMC is billed once a year but shown here alongside the annualised monthly costs so every rupee is comparable.
How this is calculated
- Annual power = monthly electricity × 12 = Rs 40,000 × 12 = Rs 4,80,000.
- Annual chemicals = monthly chemical × 12 = Rs 12,000 × 12 = Rs 1,44,000.
- Annual manpower = monthly manpower × 12 = Rs 25,000 × 12 = Rs 3,00,000.
- Annual total = power + chemicals + manpower + AMC = Rs 4,80,000 + Rs 1,44,000 + Rs 3,00,000 + Rs 1,20,000 = Rs 10,44,000.
Indicative operating cost for budgeting. Actual spend varies with load, tariff slabs, technology and local wages — confirm with your operator or O&M contractor.
Related Guides — Deep-dive reading
STP Annual Operating Cost Breakdown: What It Really Costs to Run a Plant in India
Power, chemicals, manpower, AMC and sludge disposal — the five buckets that make up your STP's yearly running cost, with realistic 2025–26 per-KLD ranges for Indian apartments, offices and townships, and where each rupee actually goes.
Sewage Treatment PlantsSTP Electricity Cost Analysis: What Powering a Sewage Treatment Plant Really Costs in India
Electricity is the single largest running cost of an STP — and aeration eats most of it. Here is what your plant's specific energy use (kWh/m³) really is, what the monthly bill looks like by capacity, and how to keep it in check, with honest India ranges for 2025–26.
Sewage Treatment PlantsSTP Lifecycle Cost Comparison: MBBR vs SBR vs MBR (2026 India Guide)
The cheapest STP to buy is rarely the cheapest to own. This guide compares whole-life cost — capital plus fifteen years of running cost — across MBBR, SBR and MBR, with realistic 2026 Indian rupee ranges for developers, owners and RWAs.
Sewage Treatment PlantsRelated Tools — You may also find these useful
Commercial STP Planner
Plan a commercial building's sewage treatment plant from occupancy — get water demand, sewage generated, recommended STP capacity in KLD, the best-fit technology and reusable treated water.
PlannerSTP AMC Cost Calculator
Estimate the annual, monthly and per-KLD annual maintenance contract (AMC) cost for a sewage treatment plant from its capacity, service level and fixed visit charge.
STP CalculatorSTP AMC Evaluation Checklist
Interactive checklist that scores any STP annual maintenance contract across scope, service levels and commercials, giving a live readiness score before you sign.
Checklist