Compliance Working with reputable turnkey sewage treatment plant contractors, we undertake wastewater assessment, and supervise the design, building and maintenance of treatment systems in line with existing public sewer lines. We are responsible for preparing detail design and contract documents pertaining to sewerage planning, while providing management with specialist input.statutory and public safety standards is assured with all due professional care when it comes to designing and planning of roads and drains. Existing and alternative accesses to the project sites are thoroughly analysed, while drains are designed to effectively prevent flooding upstream, within the site and downstream.