Delaware Statewide Assessments of Wastewater Facilities and Current Status and Future Needs 2020 - 2025 Delaware Department of Natural Resources and Environmental Control Prepared by: 240 Continental Drive, Suite 200 | Newark, Delaware and 10306 Eaton Place, Suite 340| Fairfax Virginia Delaware Statewide Assessment of Wastewater Facilities Current Status and Future Needs 2020 – 2025 Tetra Tech, Inc. 240 Continental Drive, Suite 200 Newark, DE and 10306 Eaton Place, Suite 340 Fairfax, VA April 2020 Delaware Statewide Assessment of Wastewater Facilities April 2020 Table of Contents Tables ............................................................................................................................................... iv Figures ............................................................................................................................................... v Acronyms and Abbreviations ............................................................................................................. vi Executive Summary ......................................................................................................................... viii 1. Report Purpose, Methodology and Background ...........................................................................1 Purpose ..................................................................................................................................................... 1 Methodology ............................................................................................................................................. 1 Survey .................................................................................................................................................... 1 Interviews .............................................................................................................................................. 2 Data Analysis ......................................................................................................................................... 2 Background ............................................................................................................................................... 3 Regulations for, Permitting of, and Enforcement on Wastewater Facilities ........................................ 3 Other Common Issues, Impacts and Themes Affecting Wastewater Treatment in Delaware ............. 6 Funding for Wastewater Facilities ........................................................................................................ 8 Organization of the Report ..................................................................................................................... 10 Overview of Wastewater Treatment Plant Stages.............................................................................. 10 Definitions of Other Key Terms Used in this Study ............................................................................. 11 2. Statewide Summary/Overview ................................................................................................. 12 General Information ............................................................................................................................... 12 Infrastructure Status ............................................................................................................................... 13 Wastewater System Revenue, Rates, and Planned Capital Expenditures .............................................. 16 NPDES Permits for Municipal Separate Storm Sewer Systems............................................................... 16 3. Facilities in New Castle County .................................................................................................. 18 New Castle County Overview .................................................................................................................. 18 New Castle County - Delaware City WWTP ............................................................................................ 22 Port Penn STP .......................................................................................................................................... 23 New Castle County - Middletown-Odessa-Townsend (MOT) Regional WWTP (Water Farm #1) .......... 23 New Castle County - Lea Eara Farms WWTP .......................................................................................... 23 Middletown ............................................................................................................................................. 24 Middletown - Frog Hollow Wastewater Treatment Facility (WWTF) ..................................................... 25 Delaware Statewide Assessment of Wastewater Facilities April 2020 Middletown WWTP ................................................................................................................................. 25 New Castle County - Water Farm #2....................................................................................................... 26 New Castle County - Service Area North of the C&D Canal (excluding Delaware City) .......................... 26 Wilmington WWTP ................................................................................................................................. 27 Newark .................................................................................................................................................... 29 4. Facilities in Kent County ............................................................................................................ 31 Kent County Regional WWTP .................................................................................................................. 31 Harrington ............................................................................................................................................... 35 Camden-Wyoming Sewer and Water Authority ..................................................................................... 35 Dover ....................................................................................................................................................... 37 Milford .................................................................................................................................................... 38 Clayton .................................................................................................................................................... 39 Smyrna .................................................................................................................................................... 40 5. Facilities in Sussex County ......................................................................................................... 42 Sussex County Overview ......................................................................................................................... 42 Lewes STP ................................................................................................................................................ 45 Rehoboth Beach STP ............................................................................................................................... 46 Seaford WWTP ........................................................................................................................................ 47 Delmar WWTP (Maryland) ...................................................................................................................... 49 Inland Bays Regional WWTF ................................................................................................................... 51 Piney Neck Regional WWTF .................................................................................................................... 52 South Coastal Regional WWTF ................................................................................................................ 52 Wolfe Neck WWTF .................................................................................................................................. 53 Georgetown WRF .................................................................................................................................... 53 Bridgeville WWTF .................................................................................................................................... 54 Greenwood ............................................................................................................................................. 55 Laurel ...................................................................................................................................................... 56 Millsboro WWTF ..................................................................................................................................... 57 Selbyville ................................................................................................................................................. 58 Other Sussex County Collection Systems ................................................................................................ 59 6. Private Facilities ....................................................................................................................... 61 Artesian ................................................................................................................................................... 62