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Division of Drinking and Ground Waters Rules and Laws

Effective Rules and Laws

Ohio Administrative Code (OAC) rules administered by the Division of Drinking and Ground Waters are located on this page. These include rules for Ohio public drinking water systems adopted under Ohio Revised Code (ORC) section 6109, and rules for Underground Injection Control, adopted under ORC section 6111.043.

Proposing new rules and amendments to existing rules is a regular activity conducted by the Ohio EPA. Find out more about current rule-making in progress, or join a rules electronic mailing list to stay informed.

Chapter 3745-7: Operator Certification for Public Water Systems and Wastewater Treatment Works

  • 3745-7-01 (21 December 2006) Definitions. [PDF]
  • 3745-7-02 (21 December 2006) Certified operators required. [PDF]
  • 3745-7-03 (21 December 2006) Public water system classification and staffing requirements. [PDF]
  • 3745-7-04 (21 December 2006) Treatment works and sewerage system classification and staffing requirements. [PDF]
  • 3745-7-05 (21 December 2006) Classification of operator certification. [PDF]
  • 3745-7-06 (21 December 2006) Certification of operators. [PDF]
  • 3745-7-07 (21 December 2006) Operator in training. [PDF]
  • 3745-7-08 (21 December 2006) Limited certificate. [PDF]
  • 3745-7-09 (21 December 2006) Recordkeeping requirements and responsibilities of a certified operator. [PDF]
  • 3745-7-10 (21 December 2006) Operator Certification Advisory Council. [PDF]
  • 3745-7-11 (21 December 2006) Duties of the Council. [PDF]
  • 3745-7-12 (21 December 2006) Suspension or revocation of certification. [PDF]
  • 3745-7-13 (21 December 2006) Reciprocity. [PDF]
  • 3745-7-15 (21 December 2006) Expiration and renewal of operator certification. [PDF]
  • 3745-7-17 (21 December 2006) Operator certification fees. [PDF]
  • 3745-7-18 (21 December 2006) Conduct during the examination process. [PDF]

Chapter 3745-9: Water Well Standards

  • 3745-9-01 (1 September 2009) Definitions. [PDF]
  • 3745-9-02 (1 September 2009) Scope and Exemptions. [PDF]
  • 3745-9-03 (1 September 2009) Monitoring Well. [PDF]
  • 3745-9-04 (1 September 2009) Well Siting. [PDF]
  • 3745-9-05 (1 May 2003) Well Construction. [PDF]
  • 3745-9-06 (1 May 2003) Well Construction, Specific Geologic Conditions. [PDF]
  • 3745-9-07 (1 May 2003) Well Grouting for Construction or Closure. [PDF]
  • 3745-9-08 (1 May 2003) Well Disinfection. [PDF]
  • 3745-9-09 (1 September 2009) Well Development and Pumping Test. [PDF]
  • 3745-9-10 (1 May 2003) Abandoned Well Sealing. [PDF]

Chapter 3745-34: Underground Injection Control

  • 3745-34-01 (23 April 2009) Definitions. [PDF]
  • 3745-34-02 (25 July 1984) Considerations under federal law. [PDF]
  • 3745-34-03 (25 July 1984) Confidentiality of information. [PDF]
  • 3745-34-04 (23 April 2009) Classification of wells. [PDF]
  • 3745-34-05 (25 July 1984) Identification of underground sources of drinking water. [TXT]
  • 3745-34-06 (25 July 1984) Prohibition of unauthorized injection. [TXT]
  • 3745-34-07 (23 April 2009) Prohibition of movement of fluid into underground injection. [TXT]
  • 3745-34-08 (23 April 2009) Prohibition of class IV wells. [PDF]
  • 3745-34-09 (23 April 2009) Requirements for wells injecting hazardous wastes. [PDF]
  • 3745-34-10 (25 July 1984) Waiver of requirement by director. [PDF]
  • 3745-34-11 (23 April 2009) Class V wells. [PDF]
  • 3745-34-12 (23 April 2009) Application by permit; authorization by permit. [PDF]
  • 3745-34-13 (23 April 2009) Class I permit application. [PDF]
  • 3745-34-14 (23 April 2009) Class I permit to drill applications. [PDF]
  • 3745-34-15 (23 April 2009) Class I permit to operate applications. [PDF]
  • 3745-34-16 (23 April 2009) Class V permit requirements. [PDF]
  • 3745-34-17 (23 April 2009) Signatories to permit applications and reports. [PDF]
  • 3745-34-18 (20 January 1995) Class V Injection Well Area Permits. [PDF]
  • 3745-34-19 (25 July 1984) Emergency permits. [PDF]
  • 3745-34-20 (9 November 1984) Effect of a permit. [TXT]
  • 3745-34-21 (11 March 2002) Duration of permits. [PDF]
  • 3745-34-22 (25 July 1984) Transfer of permits. [TXT]
  • 3745-34-23 (24 January 2000) Modification or revocation and re-issuance of permits. [PDF]
  • 3745-34-24 (25 July 1984) Termination of permits. [TXT]
  • 3745-34-25 (25 July 1984) Minor modifications of permits. [TXT]
  • 3745-34-26 (20 January 1995) Conditions applicable to all permits. [PDF]
  • 3745-34-27 (11 March 2002) Establishing drilling permit and injection permit conditions. [PDF]
  • 3745-34-28 (25 July 1984) Schedule of compliance. [TXT]
  • 3745-34-29 (25 July 1984) Requirements for recording and reporting of monitoring results. [TXT]
  • 3745-34-30 (25 July 1984) Plan of corrective action. [TXT]
  • 3745-34-32 (23 April 2009) Area of review. [PDF]
  • 3745-34-33 (25 July 1984) Corrective action. [PDF]
  • 3745-34-34 (24 January 2000) Mechanical integrity. [PDF]
  • 3745-34-35 (23 April 2009) Criteria for establishing permitting priorities. [TXT]
  • 3745-34-36 (25 July 1984) Plugging and abandoning class I wells. [TXT]
  • 3745-34-37 (25 July 1984) Construction requirements for class I wells. [PDF]
  • 3745-34-38 (16 December 1991) Operating, monitoring, and reporting requirements for class I wells. [PDF]
  • 3745-34-39 (23 April 2009) Information to be considered by the director in authorizing class I wells. [PDF]
  • 3745-34-40 (23 April 2009) Seismic Reflection Survey Requirements for Class I wells. [PDF]
  • 3745-34-50 (16 December 1991) Criteria and standards for class I injection wells. [TXT]
  • 3745-34-51 (24 January 2000) Minimum criteria for siting class I hazardous waste injection wells. [PDF]
  • 3745-34-52 (16 December 1991) Area of review. [TXT]
  • 3745-34-53 (16 December 1991) Corrective action for wells in the area of review. [TXT]
  • 3745-34-54 (23 April 2009) Construction requirements. [TXT]
  • 3745-34-55 (16 December 1991) Logging, sampling, and testing prior to new well operation. [TXT]
  • 3745-34-56 (16 December 1991) Operating requirements. [PDF]
  • 3745-34-57 (1 December 1993) Testing and monitoring requirements. [PDF]
  • 3745-34-58 (16 December 1991) Reporting requirements. [TXT]
  • 3745-34-59 (23 April 2009) Information to be evaluated by the director. [TXT]
  • 3745-34-60 (16 December 1991) Closure. [TXT]
  • 3745-34-61 (16 December 1991) Post closure. [PDF]
  • 3745-34-62 (16 December 1991) Financial responsibility for closure and post closure care. [PDF]
  • 3745-34-63 (23 April 2009) Class I annual permit fee; fee per ton of waste injected. [PDF]

 Chapter 3745-81: Primary Drinking Water Rules

  • 3745-81-01 (24 July 2009) Definitions. [PDF]
  • 3745-81-02 (27 December 1978) Coverage. [TXT]
  • 3745-81-03 (27 December 1978) Siting requirements. [TXT]
  • 3745-81-04 (17 October 2003) Administrative penalties. [PDF]
  • 3745-81-10 (01 January 2002) Maximum residual disinfectant levels. [PDF]
  • 3745-81-11 (01 August 2005) Maximum contaminant levels and best available technologies for inorganic contaminants. [PDF]
  • 3745-81-12 (01 January 2002) Maximum contaminant levels and best available technologies for organic contaminants. [PDF]
  • 3745-81-14 (01 January 2008) Maximum contaminant levels for microbiological contaminants. [PDF]
  • 3745-81-15 (15 September 2004) Maximum contaminant levels for radium-226, radium-228, and gross alpha particle radioactivity in community water systems. [PDF]
  • 3745-81-17 (13 September 1993) Treatment techniques. [TXT]
  • 3745-81-19 (01 August 2005) Use of non-centralized treatment devices. [PDF]
  • 3745-81-21 (01 January 2008) Coliform monitoring requirements. [PDF]
  • 3745-81-23 (01 August 2005) Inorganic chemical monitoring requirements. [PDF]
  • 3745-81-24 (01 August 2005) Organic chemical monitoring requirements. [PDF]
  • 3745-81-26 (15 April 2005) Monitoring frequency for radioactivity in community water systems. [PDF]
  • 3745-81-27 (13 October 2008) Analytical techniques. [PDF]
  • 3745-81-28 (01 November 2004) Acceptability of analytical results. [PDF]
  • 3745-81-29 (27 December 1978) Monitoring of consecutive public water systems. [TXT]
  • 3745-81-31 (01 April 1999) Reporting requirements for public water systems. [PDF]
  • 3745-81-32 (01 January 2008) Public notification. [PDF]
  • 3745-81-33 (01 November 2004) Record maintenance. [PDF]
  • 3745-81-60 (03 August 2004) Sanitary surveys. [PDF]
  • 3745-81-70 (01 January 2004) Monitoring requirements for disinfection residuals. [PDF]
  • 3745-81-71 (01 January 2005) General requirements for filtration and disinfection of surface water sources. [PDF]
  • 3745-81-72 (01 January 2005) Disinfection of water from surface water sources. [PDF]
  • 3745-81-73 (01 January 2005) Filtration of water from surface water sources. [PDF]
  • 3745-81-74 (01 January 2005) Turbidity and disinfection monitoring requirements for surface water systems. [PDF]
  • 3745-81-75 (01 January 2005) Reporting and recordkeeping requirements. [PDF]
  • 3745-81-76 (01 January 2002) Water source designation. [PDF]
  • 3745-81-77 (01 January 2004) Treatment techniques for control of disinfection byproduct (DBP) precursors. [PDF]
  • 3745-81-78 (01 January 2004) Optimization of distribution systems for control of disinfection byproducts. [PDF]
  • 3745-81-79 (03 August 2004) Filter backwash recycling. [PDF]
  • 3745-81-80 (24 July 2009) Control of lead and copper - general requirements. [PDF]
  • 3745-81-81 (24 July 2009) Control of lead and copper; applicability of corrosion control treatment steps to small, medium-size, and large water systems. [PDF]
  • 3745-81-82 (24 July 2009) Control of lead and copper; description of corrosion control treatment requirements. [PDF]
  • 3745-81-83 (24 July 2009) Control of lead and copper; source water treatment requirements. [PDF]
  • 3745-81-84 (24 July 2009) Control of lead and copper - lead service line replacement requirements. [PDF]
  • 3745-81-85 (24 July 2009) Control of lead and copper - public education, supplemental monitoring requirements and consumer notification of results. [PDF]
  • 3745-81-86 ((24 July 2009) Control of lead and copper - monitoring requirements for lead and copper in tap water. [PDF]
  • 3745-81-87 (24 July 2009) Control of lead and copper - monitoring requirements for water quality parameters. [PDF]
  • 3745-81-88 (24 July 2009) Control of lead and copper - monitoring requirements for lead and copper in water entering the distribution system. [PDF]
  • 3745-81-89 (24 July 2009) Analytical methods. [PDF]
  • 3745-81-90 (24 July 2009) Control of lead and copper - reporting and recordkeeping requirements. [PDF]

 Chapter 3745-82: Secondary Contaminant Standards

  • 3745-82-01 (1 October 2006) Definitions. [PDF]
  • 3745-82-02 (13 September 1993) Secondary maximum contaminant levels. [TXT]
  • 3745-82-03 (1 October 2006) Monitoring for compliance with secondary maximum contaminant levels. [PDF]

 Chapter 3745-83: Operational Requirements

  • 3745-83-01 (1 October 2006) Operational requirements. [PDF]

 Chapter 3745-84: Public Water System Licenses

  • 3745-84-01 (01 April 2009) Definitions.
  • 3745-84-02 (01 April 2009) Application for a license to operate or maintain a public water system.
  • 3745-84-03 (01 April 2009) Expiration and renewal of license to operate or maintain a public water system.
  • 3745-84-04 (01 April 2009) Format and display of license to operate or maintain a public water system.
  • 3745-84-05 (01 April 2009) Fees for operating or maintaining a public water system.
  • 3745-84-06 (01 April 2009) Conditioning, denial, suspension or revocation of a license to operate or maintain a public water system.

 Chapter 3745-85: Contingency Plans

  • 3745-85-01 (21 April 2001) Contingency plans. [PDF]

 Chapter 3745-86: Emergency Loans

  • 3745-86-01 (21 April 2001) Emergency loans. [PDF]

 Chapter 3745-87: Capability Assurance Plans

  • 3745-87-01 (01 October 1999) Definitions. [PDF]
  • 3745-87-02 (01 October 1999) Capability assurance plans. [PDF]

 Chapter 3745-88: Disadvantaged Community Loans

  • 3745-88-01 (16 July 2009) Definitions [PDF]
  • 3745-88-02 (16 July 2009) Disadvantaged community loans [PDF]

 Chapter 3745-89: Laboratory Certification

  • 3745-89-01 (13 October 2008) Definitions. [PDF]
  • 3745-89-02 (18 June 2004) Analyses requiring laboratory certificate of approval. [PDF]
  • 3745-89-03 (18 June 2004) Procedure for laboratory approval. [PDF]
  • 3745-89-04 (18 June 2004) Renewal of laboratory certificate of approval. [PDF]
  • 3745-89-05 (18 June 2004) Requirements for maintaining laboratory certification. [PDF]
  • 3745-89-06 (14 September 2009) Director's actions for laboratory certification. [PDF]
  • 3745-89-07 (09 April 1990) Laboratory certificate property of state; display. [PDF]
  • 3745-89-08 (14 September 2009) Reporting of analytical results. [PDF]
  • 3745-89-09 (18 June 2004) Interim authorization for plant control tests. [PDF]
  • 3745-89-10 (18 June 2004) Interim authorization for new contaminants and new methods. [PDF]

 Chapter 3745-91: Plan Approval

  • 3745-91-01 (31 December 2006) Definitions. [PDF]
  • 3745-91-02 (31 December 2006) Application for approval of plans. [PDF]
  • 3745-91-03 (17 October 2003) Requirements for plan drawings. [PDF]
  • 3745-91-04 (26 November 1980) Requirements for specifications. [TXT]
  • 3745-91-05 (01 January 2002) Requirements for data sheet. [PDF]
  • 3745-91-06 (01 January 2002) Requirements for supporting information. [PDF]
  • 3745-91-07 (01 January 2002) Requirements for submittal letter. [PDF]
  • 3745-91-08 (01 July 2004) Procedure for approval; changes. [PDF]
  • 3745-91-09 (01 January 2002) Iron and  manganese treatment. [PDF]
  • 3745-91-10 (01 September 2009) Drinking water source protection plan. [PDF]
  • 3745-91-12 (01 January 1999) Certification by political subdivisions and investor-owned utilities. [PDF]

 Chapter 3745-92: Escrow Requirements

  • 3745-92-01 (26 November 1980) Definitions. [TXT]
  • 3745-92-02 (26 November 1980) Escrow deposit required. [TXT]
  • 3745-92-03 (26 November 1980) Amount of deposit. [TXT]
  • 3745-92-04 (26 November 1980) Release of escrow. [TXT]
  • 3745-92-05 (26 November 1980) Orders of the director, notice to owner. [TXT]
  • 3745-92-06 (26 November 1980) Fee for escrow deposit. [TXT]

 Chapter 3745-95: Backflow Prevention and Cross-Connection Control

  • 3745-95-01 (1 October 2006) Definitions. [PDF]
  • 3745-95-02 (1 May 2003) Cross-connections. [PDF]
  • 3745-95-03 (26 November 1980) Surveys and investigations. [PDF]
  • 3745-95-04 (1 May 2003) Where protection is required. [PDF]
  • 3745-95-05 (1 May 2003) Type of protection required. [PDF]
  • 3745-95-06 (1 May 2003) Backflow prevention devices. [PDF]
  • 3745-95-07 (8 August 2008) Booster pumps. [PDF]
  • 3745-95-08 (26 November 1980) Violations. [PDF]
  • 3745-95-09 (1 October 2006) Requirements for yard hydrants. [PDF]

 Chapter 3745-96: Consumer Confidence Reports

  • 3745-96-01 (24 July 2009) Applicability and definition. [PDF]
  • 3745-96-02 (24 July 2009) Required report content. [PDF]
  • 3745-96-03 (24 July 2009) Required additional health information. [PDF]

  • 3745-96-04 (01 May 2001) Report delivery and recordkeeping. [PDF]

Please note: all ground water rules except the Underground Injection Control Program are implemented and enforced by divisions other than DDAGW. These rules may be found according to their pollution source, as follows:

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