Ohio’s public water systems (PWSs) provide an invaluable service and vital resource to the populations they serve. Chapter 6109 of the Ohio Revised Code authorizes Ohio EPA to safeguard public health by enforcing requirements of the Safe Drinking Water Act. The Division of Drinking and Ground Waters (DDAGW) oversees the operation and permitting of PWSs, which partially includes the review of engineering plans.

To ensure that adequate quantities of safe drinking water are provided, DDAGW staff review engineering plans and other information pertinent to proposed PWS projects. The division also develops engineering guidance documents, collaborates with the Ohio Section of American Water Works Association and reviews PWS backflow prevention and cross-connection control programs.

For more information or questions about engineering considerations for PWSs, please contact your DDAGW district office or call DDAGW Central Office at (614) 644-2752.

IMPORTANT – Plan Submittal Instructions

Due to the restrictions from COVID 19, hard copy detail or general plans will not be received by Ohio EPA. When plans are received electronically, an invoice for payment of the review fee, along with instructions on how to pay, will be sent to the party that submitted the plans. Review will begin when payment is received. The detail plans, general plan, Water Supply Data Sheet and/or specifications can be submitted to DDAGW.Engineering@epa.ohio.gov either directly if less than 25 MB or through Liquid Files.

To send plan packages using DDAGW's new Liquid Files file drop site go to: https://fileshare.epa.ohio.gov/filedrop/DDAGW_Engineering_Plans. On the DDAGW Engineering Plans page you will need to enter your Email Address and Subject. The message is optional. At the bottom of the screen click the Add button to browse to the folder that contains the files you need to send to DDAGW. Once your files are added click the Send button below the Add button to submit your plan package to DDAGW.

If you currently have plans submitted, you can use the DDAGW.Engineering@epa.ohio.gov to inquire on the status or email the staff engineer directly who is reviewing them. If you are submitting a revised set of plans in response to comments, then please direct them to the staff person who signed the comment letter.

Plan Review and Approval

Backflow prevention device

Project Summary Sheets/Forms

  • Water Supply Data Sheet (Form 5300) [PDF] or [Word]
    • Submit with detail plans or general plans
  • Pump Stations [PDF] or [Word]
  • Pressure Reducing Stations and Air Relief Valves [PDF] or [Word]
  • Small System Plan Submittal Checklist [PDF] or [Word]
  • Storage Tanks [PDF] or [Word]
  • Waterline Extensions [PDF] or [Word]
  • Well Project Summary Sheet [PDF] or [Word]

Standards, Policies, Guidance and White Papers

Backflow Prevention and Cross-Connection Control

Approved Capacity

Contact Time Calculations

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