Class V

Class V: What is a Class V well?

A Class V well is a system used to inject non-hazardous fluids underground. In most cases, fluids are injected either into or above an underground source of drinking water. This diverse group ranges from simple shallow wells to complex experimental injection technologies.

Most Class V wells are "low-tech" and depend on gravity to drain fluids directly below the land surface. Drywells, cesspools, and septic system leach fields are examples of simple Class V wells. Because their construction often provides little or no pretreatment and these fluids are injected directly into or above an underground source of drinking water, proper management is important.

More sophisticated Class V wells may rely on gravity or use pressure systems for fluid injection. Some sophisticated systems include advanced wastewater disposal systems used by industry, experimental wells used to test new or unproven technologies, and even systems used to inject and store water for later reuse.

Forms

• Class V Injection Well Application for Subsurface Injection of Non-Waste Fluid Below the Lower Most Usable Water Zone (.pdf) (7/12) (Deep Wells Only)

• Class V Underground Injection Control Application for Authorization to Inject Remedial Compounds in Conjunction with a Groundwater Remediation Project (.pdf) (7/12)

• Class V Underground Injection Control Permit Application for Subsurface Injection of Fluids in Conjunction with a Groundwater Remediation Project (.pdf) (7/12)

• Class V Underground Injection Control Repermit Application for Subsurface Injection of Fluids in Conjunction with a Groundwater Remediation Project (.pdf) (11/12)

• Class V Underground Injection Control Application for Authorization to Operate Air Sparging Well in Conjunction with a Groundwater Remediation Project (.pdf) (7/12)

• Inventory Report for Class V Injection Well(s) Receiving Heat Pump-Air Conditioning Return Water (.pdf) (5/11)

• Inventory Report for Class V Wells (.pdf) (11/12)

• Inventory Report for Class V Well(s) Receiving Motor Vehicle Wastes and-or Sanitary Wastes (.pdf) (11/12)

• Inventory Report for Class V Well(s) Receiving Industrial and-or Sanitary Wastes (.pdf) (5/11)

• Inventory Report for Class V Wells(s) Receiving Only Sanitary Wastes (.pdf) (11/12)

• Inspection Form for Class V Wells (.pdf) (11/12)

• Well Plugging Report (.pdf) (11/12)

• Underground Injection Control Permit Application for the Purpose of Aquifer Recharge and/or Storage (.pdf) (7/12)

• Drinking Water Treatment Residual Class V Injection Well Permit Application (.pdf) (7/12)

Procedures

• UICV-1 Class V Underground Injection Control Industrial Waste Disposal Well Sampling and Closure Procedures - UICV-1 (.pdf) (5/11)

• UICV-2 Class V Underground Injection Control Motor Vehicle Waste Disposal Well (MVWDW) Sampling and Closure Procedures - UICV-2 (.pdf) (5/11) 

• UICV-3 Class V Underground Injection Control (UIC) Heat Pump & Air Conditioning Return Flow Well Requirements - UICV-3 (.pdf) (5/11)

• UICV-4 Procedure for the Pressure Mechanical Integrity Test for Evaluating Internal Mechanical Integrity of a Class V Injection Well - UICV-4 (.pdf) (5/11)

• UICV-5 Procedure for Conducting the Oxygen Activation (OA) Log for Evaluating External Mechanical Integrity of a Class V  Injection Well - UICV-5 (.pdf) (5/11)

• UICV-6 Procedure for Demonstrating Financial Assurance for a Class V Injection Well - UICV-6 (.pdf) (12/12)

• UICV-7 Procedure for Conducting the Temperature Log for Evaluating External Mechnical Integrity of a Class V Injection Well - UICV-7 (.pdf) (5/11)

• UICV-8 Procedure for the Plugging and Abandonment of a Class V Injection Well - UICV-8 (.pdf) (5/11)

• UICV-9 Procedure for Addressing Veterinary Clinics Directing Wastes to a Septic System (.pdf) (5/11)

• UICV-10 Procedure for Addressing Beauty Salons Directing Wastes to a Septic System (.pdf) (5/11)

• UICV-11 Procedure for Conducting a Compatibility Evaluation for a Class V Injection Well (.pdf) (5/11)

• UICV-12 Procedure for Completing Section #6 of the Permit Application for a Class V Injection Well (.pdf) (5/11)

• UICV-13 Procedure for Signatories to Permit Application and Monitoring Reports for Class V Disposal Well (.pdf) (7/12) (NEW)

• UICV-14 Procedure for Developing a Chemical Treatment Plan (Including Acidizing) for a Class V Injection Well (.pdf) (4/13)(NEW)

Guidance Documents

• UICV-G1 Guidance for Completing Class V Underground Injection Control Application for Authorization to Operate Air Sparging Well in Conjunction with a Groundwater Remediation Project. (.pdf) (5/11)

• WMS 12-06-A Technical Guidance - Floor Drains.pdf (6/12) (NEW)