Ohio Administrative Code
Title 3745 - Ohio Environmental Protection Agency
Chapter 3745-9 - Water Well Standards
Section 3745-9-08 - Well disinfection
Current through all regulations passed and filed through December 16, 2024
(A) A public water system well shall be disinfected after completion of construction, installation, development, alteration or repair, or any other actvity or event that might lead to the contamination of the water, and before supplying water for human consumption.
(B) The standard AWWA C654, "Disinfection of Wells," shall be used as a guide except for the topics presented in sections 4.2, 4.5 and 5, that are otherwise specified in paragraphs (C), (D) and (E) of this rule.
(C) The following disinfection procedures shall apply:
(D) After disinfection, a well shall be flushed for a minimum of fifteen minutes and total chlorine undetectable before sampling for total coliform. The well shall not be placed into service until two consecutive samples collected from the well at least thirty minutes apart are total coliform-negative. Microbiological and total chlorine samples shall be analyzed in accordance with Chapter 3745-89 and rule 3745-81-27 of the Administrative Code.
(E) If a sample is reported positive for total coliform, a system shall do one of the following:
(F) A system with a well unable to meet paragraph (D) of this rule after the second chlorination must consult with the director for corrective action, which may include compliance with paragraph (B) of rule 3745-81-42 of the Administrative Code.
[Comment: For dates of non-regulatory government publications, publications of recognized organizations and associations, test methods, federal rules, and federal statutory provisions referenced in this rule, see paragraph (AA) of rule 3745-9-01 of the Administrative Code titled "Incorporation by reference."]