The responsibilities of the Water Supply Engineering Section include:

• Construction Permitting: Ensuring that public water supplies provide adequate quantities of safe drinking water through correct design and construction of treatment and distribution facilities;
• Water Allocation & Use Permitting: Ensuring that the waters of the state, which are owned by the citizens of Iowa, are allocated according to the beneficial use principles in a sustainable manner;
• Viability Assessment & Capacity Development: Working with public water supplies to improve their technical, managerial, and financial capacity;
• DWSRF Low-Interest Loan Program: Ensuring that the infrastructure which is designed and built using Drinking Water State Revolving Loan Funds meets all technical requirements for that funding.

Additional public water supply activities include providing technical assistance to water operators and consultants in treatment technologies for specific water quality problems, providing educational opportunities for operators to optimize their existing treatment processes, providing technical assistance in water supply regulations, and developing the annual Water Supply Program Compliance Report.