We are a specialized engineering and contracting company delivering end-to-end solutions for wastewater and water treatment projects across Turkey, Europe, and the Middle East.

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Operating under Interestate Yapi Müşavirlik Taahhüt ve Dış Ticaret Limited Şirketi, we have successfully designed and constructed treatment facilities using proven, sustainable, and region-adapted technologies. Our expertise covers the full project lifecycle, including:

• Industrial and domestic wastewater treatment plants

• Drinking and potable water treatment systems

• Process water preparation

• Wastewater recovery and reuse solutions

• Agricultural infrastructure and biomass-based energy production

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Our company specializes in designing and manufacturing at our factory, while collaborating with European manufacturers for all equipment and tools required for WTP & WWTP. This enables us to supply, install, and commission systems in full compliance with international standards and local regulations.

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We ensure that all systems are delivered and installed according to project specifications, contractual requirements, and client expectations, with a strong focus on reliability and long-term operational performance.

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Our technical teams work closely with client representatives to:

• Accelerate project delivery schedules.

• Optimize capital and operational costs through accurate engineering calculations.

• Provide continuous support after supply and commissioning, including operational assistance and training.

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By combining international engineering practices with diverse regional experience, we deliver efficient, economical, and environmentally responsible solutions tailored to the climatic, regulatory, and operational conditions of each project location.