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 Pages Tagged With: "groundwater"

Legal Notice: Proposed Plan of Remedial Action for the Lidl Grocery Store Site (De-1643)

Division of Waste and Hazardous Substances Start Date: 2/10/2019 End Date: 3/4/2019
The Department invites public comment on a proposal to clean up the Lidl Grocery Store Site located in Dover, Delaware.  The approximately 7.23-acre


Groundwater Discharges Section Fees

The following is a table of fees related to the permitting and licensing programs of the Groundwater Discharges Section of the Division of Water.
On-Site Inspections (Annual) Holding Tank $60


Groundwater Discharge Licenses

The Groundwater Discharges Section issues licenses for the various professions involved in designing, installing and maintaining on-site wastewater treatment and disposal systems. Licenses are granted under the state’s on-site systems regulations and with input from the On-Site Systems Advisory Board.
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On-Site Systems Advisory Board

The On-Site Systems Advisory Board advises the Department on the groundwater discharges licensing program. The Board, created in the on-site systems regulations (7 DE Admin. Code, 7101), reviews and approves professional training requirements and courses and makes recommendations for licensing decisions by the Department.
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Innovative and Alternative Systems

In some cases, where site constraints limit the ability to install conventional wastewater treatment systems, the Department may approve innovative or alternative systems. These are alternative technologies that have been proven to provide at least an equivalent level of treatment as the conventional systems used in Delaware.



Underground Injection Control

The Groundwater Discharges Section reviews and permits the use of underground injection wells in Delaware. The only injection wells permitted in Delaware are those that are used to inject non-hazardous fluids underground. These are known as Class V wells.

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Spray Irrigation Program Resources

This page provides a general interpretation of existing methods for designing spray irrigation facilities, and also considers the relative effectiveness and limitations of these facilities.

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Marlene Baust Groundwater Discharges Section 302-739-9948



Spray Irrigation Systems

Spray irrigation of reclaimed water has been in use in Delaware since the 1970s. Reclaimed water is water that has been recovered through the treatment of wastewater at wastewater treatment facilities. Once reclaimed water has been properly treated, it can be applied to agricultural fields, golf courses, forests, parks, roadway medians and cemeteries. [column


Approved Products

A list of septic system products reviewed and approved by the Groundwater Discharges Section for use in Delaware. The Section also maintains a list of approved innovative and alternative systems that might be used where site constraints limit the ability to install conventional wastewater treatment systems. Approved Products – General [table-wrap


On-Site Wastewater System Forms

A collection of forms and resources related to the permitting and management of on-site wastewater treatment and disposal systems in Delaware. Site Evaluation Approval Septic Permit Application


Septic Systems

An on-site wastewater treatment and disposal system – known commonly as a septic system – is a wastewater treatment facility located within your property boundaries that collects, treats and disposes of wastewater from your home or business. This is different from a central or municipal wastewater treatment facility which receives wastewater from other locations for


Groundwater Discharges Section

The Groundwater Discharges Section oversees all aspects of the siting, design and installation of onsite wastewater treatment and disposal systems (known as septic systems).

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Ping Wang Groundwater Discharges Section Manager 302-739-9948



Division of Water Contacts

Virgil R. Holmes, Director Richardson and Robbins Building 89 Kings Highway Dover, DE 19901 302-739-9949
Environmental Laboratory Sergio Huerta, M.D. Laboratory Administrator 302-739-9942



Groundwater Protection

The Groundwater Protection Branch oversees groundwater protection efforts, the Source Water Assessment and Protection Program, and the Wellhead Protection Program.

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Matthew T. Grabowski Branch Manager 302-739-9945
The hydrologists and


Construction of Monitor and Observation Wells

Monitor and observation wells constructed in Delaware shall conform to the requirements of the State of Delaware Regulations Governing the Construction and Use of Wells (1997). This document reiterates some of the requirements found in the regulations. It also establishes additional criteria for the design and construction of monitor and observation wells intended to assist


Division of Water

The Division of Water manages and protects Delaware’s water resources. It provides technical assistance, laboratory services, and regulatory guidance and implementation. And the Division performs applied research and provides educational services.

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