Duff Consulting Engineers, Inc. is a family-run firm established in 1957 and acquired by James C. Duff in 1963. It offers a full line of civil engineering services to clients in Central Texas and surrounding areas. With over 50 years of experience, the company specializes in water storage and distribution system design, surface water supply treatment facilities, pumping and storage, ground water hydrology, geology, sewage collection systems, drainage design, street design and reconstruction, bridge design, water rate study, economic feasibility study, maintenance and operational troubleshooting, consumer confidence reports, drought contingency plans, and C.C.N. application.