India’s construction industry is rapidly evolving. With stricter environmental regulations, water scarcity, and compliance requirements, installing a Sewage Treatment Plant (STP) is no longer optional for builders — it is mandatory under EC and MPCB Sewage Water Treatment Plant norms.
But the biggest question every builder asks is:
👉 “What is the total cost of an STP — CAPEX + OPEX — for my project?”
This comprehensive STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects answers exactly that.
As Green Planet Solutions Pune, we’ve designed, installed, and maintained STPs for hundreds of construction projects across India. This guide is built specifically to help builders, architects, PMC consultants, hotel owners, and industrial clients budget accurately and avoid hidden costs.
💰 1. Understanding STP CAPEX: Capital Expenditure Breakdown
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
CAPEX includes one-time costs required to build and commission the STP.
Below is a typical cost breakup for Indian projects (2025 updated):
✔ 1. Civil Construction Costs (30–45%)
Civil cost varies based on STP type:
- MBBR (Moving Bed Biofilm Reactor) – compact, economical
- SBR (Sequencing Batch Reactor) – higher civil area
- MBR (Membrane Bio-Reactor) – high civil + membrane cost
- Johkasou Technology – minimal civil work, higher unit cost
👉 image-alt: STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects – civil construction cost chart
✔ 2. Mechanical & Electrical Equipment (40–55%)
This includes:
- Aeration systems
- Blowers
- Pumps
- MBBR media
- Control panels
- Diffusers
- Membranes (for MBR)
- Storage tanks
MBBR has the lowest equipment cost compared to SBR & MBR.
✔ 3. Installation, Fabrication & Commissioning (10–15%)
This includes:
- Piping
- Cabling
- Electrical integration
- Testing
- Trial run
ENQUIRE NOW FOR STP – https://share.hsforms.com/1d12AT_oJScm8iiXbjSrEIwrh2r7
✔ 4. Engineering Approvals & Consultancy (5–10%)
Cost includes:
- EC approvals
- MPCB documentation
- Design & process calculation
- Environmental engineering fees
📌 Typical CAPEX Cost Estimate (Indian Market Rates 2025)
| STP Technology | Cost per KLD (₹) | Ideal For |
|---|---|---|
| MBBR STP | ₹18,000 – ₹28,000 | Large housing + commercial |
| SBR STP | ₹22,000 – ₹32,000 | Medium-large projects |
| MBR STP | ₹35,000 – ₹65,000 | Premium projects & hotels |
| Johkasou | ₹50,000 – ₹120,000 | Villas, small buildings |
⚡ 2. Understanding STP OPEX: Running Cost Breakdown
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
OPEX = Monthly cost to operate & maintain the STP.
✔ A. Electricity Cost (35–50%)
Includes:
- Blowers
- Pumps
- Motors
- Panel board
MBBR has the lowest power consumption.
✔ B. Manpower Cost (25–35%)
STP operator charges depend on:
- Plant size
- Technology
- Hours of attendance
✔ C. Chemicals & Consumables (10–20%)
For:
- pH adjustment
- Chlorination
- Polyelectrolytes
- Membrane cleaning (MBR only)
✔ D. AMC & Routine Maintenance (10–15%)
Annual maintenance ensures:
- Zero odour
- Smooth operation
- Compliance with MPCB
- Reduced breakdown
- ENQUIRE NOW FOR STP – https://share.hsforms.com/1d12AT_oJScm8iiXbjSrEIwrh2r7
📌 Typical Monthly OPEX Estimate for 100 KLD STP
| Technology | OPEX / Month (₹) |
|---|---|
| MBBR | ₹25,000 – ₹40,000 |
| SBR | ₹35,000 – ₹55,000 |
| MBR | ₹60,000 – ₹1,20,000 |
| Johkasou | ₹8,000 – ₹20,000 |
👉 image-alt: STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects – OPEX cost analysis graph
♻️ 3. Why CAPEX + OPEX Must Be Calculated Together
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
Builders often make the mistake of choosing a low-CAPEX plant, but later suffer from high OPEX.
The right approach is:
👉 Choose a technology that balances CAPEX + OPEX + Compliance.
This is why MBBR is the top choice in India — affordable, stable, and low OPEX.
ENQUIRE NOW FOR STP – https://share.hsforms.com/1d12AT_oJScm8iiXbjSrEIwrh2r7
🧪 4. STP Technology Comparison Based on CAPEX + OPEX
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
| Technology | CAPEX | OPEX | Best For |
|---|---|---|---|
| MBBR | Low | Low | Most projects |
| SBR | Medium | Medium | Medium-sized projects |
| MBR | High | Highest | Premium projects |
| Johkasou | High (per KLD) | Low | Small individual units |
👉 SBR needs cycle management
👉 MBR needs membrane replacement
👉 Johkasou is ideal only for small loads
🌍 5. Compliance Costs: EC & MPCB Sewage Water Treatment Plant Requirements
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
Compliance costs include:
- Sampling & lab testing
- Flow meters
- Online monitoring devices (if required)
- Data logging systems
- Compliance documentation
Projects failing to meet norms face:
❌ Heavy penalties
❌ OC delays
❌ Legal notices
ENQUIRE NOW FOR STP – https://share.hsforms.com/1d12AT_oJScm8iiXbjSrEIwrh2r7
🌿 6. Treated Water Reuse = Huge Savings for Builders & Societies
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
Treated water can be reused for:
- Flushing
- Gardening
- HVAC
- Car washing
This reduces freshwater consumption & saves ₹50,000 – ₹3,00,000 monthly for societies.
This also ensures full Liquid Waste Management: Wastewater Treatment compliance.
🛠️ 7. Hidden Costs Builders Must Consider
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
- Sludge dewatering
- Backup electricity
- Odour control units
- Pipe rerouting
- Operator cabin
- AMC after 1st year
Planning early avoids cost escalation.
🏆 8. Why Choose Green Planet Solutions Pune?
STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects
We deliver:
✔ MBBR, SBR, MBR & Johkasou STP solutions
✔ EC/MPCB-compliant designs
✔ Zero-odour, low-maintenance plants
✔ Complete CAPEX + OPEX modeling
✔ Turnkey installation
✔ AMC & Annual service
👉 image-alt: STP Cost Calculator Guide: STP CAPEX + OPEX for New Projects – Green Planet Solutions Pune STP team
ENQUIRE NOW FOR STP – https://share.hsforms.com/1d12AT_oJScm8iiXbjSrEIwrh2r7
📞 Ready to Calculate STP Cost for Your Project?
Green Planet Solutions Pune provides free STP costing, design & compliance guidance.
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