Federal (United States) · Regulations
Subpart T — Enhanced Filtration and Disinfection—Systems Serving Fewer Than 10,000 People
32 sections
32 sections
- 40 C.F.R. § 141.500General requirements.
- 40 C.F.R. § 141.501Who is subject to the requirements of subpart T?
- 40 C.F.R. § 141.502When must my system comply with these requirements?
- 40 C.F.R. § 141.503What does subpart T require?
- 40 C.F.R. § 141.510Is my system subject to the new finished water reservoir requirements?
- 40 C.F.R. § 141.511What is required of new finished water reservoirs?
- 40 C.F.R. § 141.520Is my system subject to the updated watershed control requirements?
- 40 C.F.R. § 141.521What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?
- 40 C.F.R. § 141.522How does the State determine whether my system's watershed control requirements are adequate?
- 40 C.F.R. § 141.530What is a disinfection profile and who must develop one?
- 40 C.F.R. § 141.531What criteria must a State use to determine that a profile is unnecessary?
- 40 C.F.R. § 141.532How does my system develop a disinfection profile and when must it begin?
- 40 C.F.R. § 141.533What data must my system collect to calculate a disinfection profile?
- 40 C.F.R. § 141.534How does my system use this data to calculate an inactivation ratio?
- 40 C.F.R. § 141.535What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
- 40 C.F.R. § 141.536My system has developed an inactivation ratio; what must we do now?
- 40 C.F.R. § 141.540Who has to develop a disinfection benchmark?
- 40 C.F.R. § 141.541What are significant changes to disinfection practice?
- 40 C.F.R. § 141.542What must my system do if we are considering a significant change to disinfection practices?
- 40 C.F.R. § 141.543How is the disinfection benchmark calculated?
- 40 C.F.R. § 141.544What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
- 40 C.F.R. § 141.550Is my system required to meet subpart T combined filter effluent turbidity limits?
- 40 C.F.R. § 141.551What strengthened combined filter effluent turbidity limits must my system meet?
- 40 C.F.R. § 141.552My system consists of “alternative filtration” and is required to conduct a demonstration—what is required of my system and how does the State establish my turbidity limits?
- 40 C.F.R. § 141.553My system practices lime softening—is there any special provision regarding my combined filter effluent?
- 40 C.F.R. § 141.560Is my system subject to individual filter turbidity requirements?
- 40 C.F.R. § 141.561What happens if my system's turbidity monitoring equipment fails?
- 40 C.F.R. § 141.562My system only has two or fewer filters—is there any special provision regarding individual filter turbidity monitoring?
- 40 C.F.R. § 141.563What follow-up action is my system required to take based on continuous turbidity monitoring?
- 40 C.F.R. § 141.564My system practices lime softening—is there any special provision regarding my individual filter turbidity monitoring?
- 40 C.F.R. § 141.570What does subpart T require that my system report to the State?
- 40 C.F.R. § 141.571What records does subpart T require my system to keep?