ETP, STP, WTP ডিজাইন, Installation এবং DOE ছাড়পত্র — শুরু থেকে শেষ পর্যন্ত

+880 1338-950649 team.waterexchange@gmail.com
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Water Exchange

A high-end environment consultancy firm in Bangladesh — ETP, STP and WTP design and installation, plus Department of Environment (DOE) water testing and clearance, from start to finish.

House# 396 (4th Floor), Road# 29, New DOHS Mohakhali, Dhaka 1212
team.waterexchange@gmail.com
+880 1338-950649

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  • Environment Management
  • Environment Report
  • Environmental Design & Drawing
  • Chemical & Machineries
  • Captive Power Plants (CPPs)
  • Environmental Sustainability Research

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Worked with

  • UNDP
  • JICA
  • BRAC
  • IFRC
  • NGO Forum for Public Health

© 2026 Water Exchange. Water & Beyond. All rights reserved.

Water & Beyond.

Clean water.
Clear compliance.

ETP, STP, WTP ডিজাইন, Installation এবং পরিবেশ অধিদপ্তরের (DOE) Water Test ও ছাড়পত্র বিষয়ক পরামর্শদাতা — শুরু থেকে শেষ পর্যন্ত।

A high-end environment consultancy firm in Bangladesh — ETP, STP and WTP design and installation, plus Department of Environment (DOE) water testing and clearance, from start to finish.

Get a free consultation +880 1338-950649
  • Yearly EC Certificate renewal
  • ETP · STP · WTP design
  • Industries & hospitals

From raw water to clearance

Start to finish
  1. ETP

    Effluent Treatment Plant

  2. STP

    Sewage Treatment Plant

  3. WTP

    Water Treatment Plant

  4. DOE

    DOE Water Test & Clearance

300+ projects

Stress-Free Guarantee

Every year

2 DoE-standard water tests

Trusted by 200+ companies and hospitals

  • Eurotex Knitwear Limited
  • Farazy Hospital Ltd.
  • Dishang Sweater Ltd.
  • Fuji Knitwears Ltd.
  • Meditex Industries Ltd.
  • Fab-con Textile Mills Ltd.
  • York Group
  • Petrochem Group
  • URO Group
  • Techno Plastic Solution Pvt. Ltd.
  • Client logo
  • Eurotex Knitwear Limited
  • Farazy Hospital Ltd.
  • Dishang Sweater Ltd.
  • Fuji Knitwears Ltd.
  • Meditex Industries Ltd.
  • Fab-con Textile Mills Ltd.
  • York Group
  • Petrochem Group
  • URO Group
  • Techno Plastic Solution Pvt. Ltd.
  • Client logo

Interesting facts about us

300+

Projects completed

A proven track record — 300+ projects isn’t just a number.

200+

Companies & hospitals consulted

Corporate companies and hospitals trust us with their compliance.

95+

Power plants cleared

Clearance secured for 95+ gas and diesel generator power plants.

800+

DoE-standard water tests

Water tests delivered for ETPs, STPs and yearly EC Certificate renewals.

The “Stress-Free” Guarantee

Beyond just managing paperwork — we take the stress out of compliance.

In-house engineering brilliance

Our own engineers design, test and report — nothing is outsourced to chance.

Our key services

Everything your facility needs to stay compliant

From yearly water tests and paper renewals to treatment plant drawings, machinery and power plant clearance.

01

Environment Management

  • Yearly water test
  • Yearly paper renewal
  • Monthly basis monitoring
  • Check log book
Learn more
02

Environment Report

  • EMP report
  • IEE report
  • EIA report
03

Environmental Design & Drawing

  • ETP drawing
  • STP drawing
04
05

Captive Power Plants (CPPs)

  • Environmental Clearance Certificate for diesel / gas generators
  • Yearly paper renewal for CPPs
Learn more
06

Environmental Sustainability Research

  • E-waste & research
  • Environmental sustainability
  • Capacity building

Products & machinery

Equipment for every treatment stage

Blowers, diffusers, pumps, dosing systems and meters from proven brands — sized by our engineers, installed by our team.

View all products
  • Roots Air Blower

    Roots Air Blower

  • Turbo Blower

    Turbo Blower

  • Air Diffuser

    Air Diffuser

  • Submersible Sewage Pump & Aerator

    Submersible Sewage Pump & Aerator

  • Chemical Dosing Pump

    Chemical Dosing Pump

  • Online Analyzer

    Online Analyzer

  • Open Channel Flow Meter

    Open Channel Flow Meter

  • Vortex Flow Meter

    Vortex Flow Meter

  • Thermal Gas Flow Meter

    Thermal Gas Flow Meter

  • Turbine Gas Flow Meter

    Turbine Gas Flow Meter

  • Oval Gear Flow Meter

    Oval Gear Flow Meter

  • Electromagnetic Flow Meter

    Electromagnetic Flow Meter

Who we are

Mission & vision

Our Mission

To become the premier environmental consultancy in Bangladesh by providing seamless, record-time water testing and regulatory compliance services. We empower industries and hospitals to focus on their core operations while we handle their environmental documentation with speed, transparency, and integrity.

Our Vision

Our goal is to be the consultant of choice for industrial and hospital environments, driving excellence through market-leading expertise.

CEO’s message

Excellence driven by discipline.

We leverage years of expertise and thorough due diligence to give our clients a competitive edge. We don’t just meet standards — we set them. We take the stress out of compliance by delivering your Yearly EC Certificate renewal, including two DoE-standard water tests, in record time every year.

Engr. Sarnaly Afroz

Founder and Consultant

The high-end environment consultancy firm in Bangladesh

200+

Companies & hospitals

Why choose us

Compliance without the stress

Industries and hospitals focus on their core operations — we handle the environmental documentation with speed, transparency and integrity.

01

Zero-Stress Compliance & Timely Renewals

We keep track of your deadlines and deliver your yearly Environmental Clearance renewal on time — no last-minute rush, no fines.

02

The “30-Day Guarantee” Water Sampling

Water sampling and DoE-standard testing completed within our 30-day guarantee.

03

Total Environmental Paperwork Support

From new ECC applications to renewals, reports and DOE notices — we prepare, submit and follow up every document.

04

Expertise That Fits Your Budget

In-house engineering expertise at a price that works for factories, hospitals and buildings of every size.

How we work

A clear path to compliance

Four steps, one team — you always know what happens next.

  1. 1

    Consultation & site visit

    We understand your facility, its water use and what the DOE expects from you.

  2. 2

    Testing & assessment

    Samples are collected and tested to DoE standards; we explain the results in plain language.

  3. 3

    Design & installation

    We design the right ETP, STP or WTP and install and commission it on site.

  4. 4

    DOE clearance & renewals

    We prepare the documents, follow the application through and handle every yearly renewal.

Our expertise

Environmental consultancy

Research, assessment and waste expertise for industry, government and development partners.

Capacity Building

Empowering teams through specialized training programs in environmental compliance, assessment methodologies, and sustainable management practices for long-term success.

E-Waste

Comprehensive e-waste management solutions ensuring safe disposal, recycling, regulatory compliance, and environmental protection for electronic and hazardous waste materials.

Research

Conducting cutting-edge environmental research, impact studies, and sustainability assessments to drive evidence-based solutions and informed decision-making for complex projects.

GIS

Advanced GIS mapping and spatial analysis for environmental planning, impact assessment, land use optimization, and data-driven project visualization and decision support.

Waste Characterization

Detailed waste analysis and characterization services identifying composition, classification, and disposal requirements to ensure proper management, compliance, and environmental safety.

Landfill

Expert landfill design, site assessment, and management solutions ensuring safe waste disposal, environmental protection, leachate control, and full regulatory compliance throughout operations.

EIA

Comprehensive Environmental Impact Assessments evaluating project effects on ecosystems, communities, and resources with detailed mitigation strategies ensuring regulatory compliance and sustainable development.

Carbon Credit

Strategic carbon credit advisory services including emission assessments, offset project development, verification, and trading guidance to achieve sustainability goals and regulatory compliance.

Project highlights

Our work in the field

Power plants, hospitals, buildings and factories across Bangladesh.

View all projects

Meet the team

The people behind your compliance

Leadership

Engr. Sarnaly Afroz

Founder and Consultant

BSc Engineer (Civil) · Civil & Environment

  • AI

    Ariful Islam

    Consultant (ETP & STP)

  • HN

    Humayra Neela

    Sr. Executive

  • AH

    Akram Hossen

    Digital Marketer

  • MS

    MD Sujon

    Junior Officer

FAQ

Questions we hear often

Short answers about DOE renewals, water testing and treatment plants.

All questions

Still have a question?

Free consultation — speak to an engineer.

+880 1338-950649
How do you help with DOE paper renewal?

We handle all documentation, testing, and submission processes to renew your environmental clearance certificate efficiently and on time.

How often should I conduct water quality testing for my industry?

Testing frequency depends on your industry category — typically quarterly or bi-annually as per DOE requirements.

Can you help if my industry has received a notice from the DOE?

Yes, we provide urgent compliance support, documentation correction, and liaison services to resolve DOE notices promptly.

What is the difference between an ETP and STP?

ETP (Effluent Treatment Plant) treats industrial wastewater, while STP (Sewage Treatment Plant) treats domestic/sanitary wastewater.

Can you help if my current ETP/STP is failing DOE standards?

Yes. We audit your facility, identify compliance gaps, and provide tailored solutions including process optimization, equipment upgrades, and operational improvements to meet Department of Environment standards efficiently and cost-effectively.

What areas of Bangladesh do you serve?

We provide services nationwide across all divisions and industrial zones in Bangladesh.

Insights

From our field work

All articles
  • Water Treatment

    20 Oct 2026· 2 min read

    How an Effluent Treatment Plant Works: A Step-by-Step Guide for Factory Owners

    From the equalization tank to the final clarifier — what happens to your wastewater at each stage of an ETP, and why every stage matters for DOE compliance.

    Read article
  • Compliance

    8 Oct 2026· 1 min read

    Getting an Environmental Clearance Certificate from the DOE: What You Need to Know

    Every industrial unit in Bangladesh needs an Environmental Clearance Certificate. Here is how the category of your project shapes the process and the documents you will need.

    Read article
  • Water Treatment

    24 Sept 2026· 1 min read

    Why Your Building Needs a Sewage Treatment Plant — and How to Size One

    Hospitals, apartment blocks and commercial buildings produce sewage every hour. A properly sized STP protects public health and keeps approvals on track.

    Read article

Planning an ETP, STP or WTP?

Talk to an engineer today — we’ll guide you from design and installation to DOE clearance.

+880 1338-950649Send a message
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  • WTP drawing
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    Chemical & Machineries

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    • Water treatment chemical
    • ETP machineries
    • STP machineries
    Learn more
  • Compost plant
  • Proposal & report
  • Learn more