The Water Supply Sections, of the Iowa DNR Water Quality Bureau, are responsible for a diverse group of drinking water programs associated with public water supplies (PWS), systems that serve 25 or more people, and private wells. These Drinking Water Programs are distributed among two Sections: Water Supply Engineering and Water Supply Operations.

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The primary goal of the WSE Section is to ensure that public water supplies can provide adequate quantities of safe drinking water through correct design and construction, and that they are technically, managerially and financially viable. Activities include assisting PWSs with procurement of Drinking Water State Revolving Fund loans. Ensuring that: water resources are allocated for beneficial use; low flow stream protection program is implemented; well interference complaints are resolved; and source water used for drinking water are protected. Providing assistance in resolving water allocation problems, PWS design and other drinking water system problems, and educating the public regarding DNR policies and programs.

Program areas include:

• Public Water Supply construction permits
• Drinking Water State Revolving Fund (SRF) Program
• Source Water Assessment and Protection Program
• Public Water Supply capacity development [viability]
• Water Use And Allocation [WaterRights]
• Optimization Program (AWOP)

The primary goal of the WSO Section is to protect the public health of Iowa residents and its visitors by ensuring that drinking water from the state's public water supplies is safe and meets the federal Safe Drinking Water Act (SDWA) standards.

WSO issues operation permits to public water supply systems to insure the water is routinely tested. Enforcement and compliance techniques are used for those systems that fail to comply with the requirements of the permit. Consumers are notified of unsafe conditions. To protect public health and the environment, WSO also administers the laboratory and operator certification programs and works closely with counties on issues related to private wells and septic systems.

Specific program areas include:

• Inventorying all public water supplies
• Operation permit requiring routinely monitor water quality
• Oversight of water quality results (compliance and enforcement)
• Certification of water and wastewater operators, well contractors and pump installers
• Certification of environmental laboratories
• Private wells and septic systems and financial assistance