All Services Engineering & Architecture Engineering $25/hr · Starting at $500 Water supply and sewerage system, waste water treatment plants and building water and water and sewerage design. About $25/hr · Ongoing Download Resume Water supply and sewerage system, waste water treatment plants and building water and water and sewerage design. Skills & Expertise DesignEngineeringSystems Engineering 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts EngineersDesigners