Chapter 6. Safe Drinking Water Regulations

§ 6141.540. Who has to develop disinfection benchmark? The provisions of 40 Code of Federal Regulations § 141.540, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.541. What are significant changes to disinfection practice? The provisions of 40 Code of Federal Regulations § 141.541, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.542. What must my system do if we are considering a significant change to disinfection practices? The provisions of 40 Code of Federal Regulations § 141.542, as revised and codified as of July 1, 2019, are hereby adopted by reference. D IV . 2 W ATER C ONTROL C H . 6 - D R…

§ 6141.543. How is the disinfection benchmark calculated? The provisions of 40 Code of Federal Regulations § 141.543, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.544. What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? The provisions of 40 Code of Federal Regulations § 141.544, as revised and codified as of July 1, 2019, are hereby adopted by reference. ADDENDUM 5 COMBINED FILTER EFFLUENT REQUIR…

§ 6141.545 - § 6141.549. [Reserved]. ADDENDUM 5 COMBINED FILTER EFFLUENT REQUIREMENTS

§ 6141.55. Maximum Contaminant Level Goals for Radionuclides. The provisions of 40 Code of Federal Regulations § 141.55, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART G N ATIONAL R EVISED P RIMARY D RINKING W ATER R EGULATIONS : M AXIMUM C …

§ 6141.550. Is my system required to meet Subpart T combined filter effluent turbidity limits? The provisions of 40 Code of Federal Regulations § 141.550, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.551. What strengthened combined filter effluent turbidity limits must my system meet? The provisions of 40 Code of Federal Regulations § 141.551, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.552. My 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? The provisions of 40 Code of Federal Regulations § 141.552, as revised and codified as of …

§ 6141.553. My system practices lime softening — is there any special provision regarding my combined filter effluent? The provisions of 40 Code of Federal Regulations § 141.553, as revised and codified as of July 1, 2019, are hereby adopted by reference. ADDENDUM 6 INDIVIDUAL FI…

§ 6141.554 - § 6141.559. [Reserved]. ADDENDUM 6 INDIVIDUAL FILTER TURBIDITY REQUIREMENTS

§ 6141.56 - § 6141.59. [Reserved].

§ 6141.560. Is my system subject to individual filter turbidity requirement? The provisions of 40 Code of Federal Regulations § 141.560, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.561. What happens if my system ’ s turbidity monitoring equipment fails? The provisions of 40 Code of Federal Regulations § 141.561, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.562. My system only has two or fewer filters — is there any special provision regarding individual filter turbidity monitoring? The provisions of 40 Code of Federal Regulations § 141.562, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.563. What follow-up action is my system required to take based on continuous turbidity monitoring? The provisions of 40 Code of Federal Regulations § 141.563, as revised and codified as of July 1, 2019, are hereby adopted by reference. D IV . 2 W ATER C ONTROL C H . 6 - D …

§ 6141.564. My system practices lime softening — is there any special provisions regarding my individual filter turbidity monitoring? The provisions of 40 Code of Federal Regulations § 141.564, as revised and codified as of July 1, 2019, are hereby adopted by reference. ADDENDUM …

§ 6141.565 - § 6141.569. [Reserved]. ADDENDUM 7 REPORTING AND RECORDKEEPING

§ 6141.570. What does subpart T require that my system report to the State? The provisions of 40 Code of Federal Regulations § 141.570, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.571. What records does subpart T require my system to keep? The provisions of 40 Code of Federal Regulations § 141.571, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART U I NITIAL D ISTRIBUTION S YSTEM E VALUATIONS 2023 NOTE : Sections …

§ 6141.572 - § 6141.599. [Reserved].

§ 6141.6. Effective Dates. The provisions of 40 Code of Federal Regulations § 141.6, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART B M AXIMUM C ONTAMINANT L EVELS 2023 NOTE : Sections 6141.14 to 6141.20 are reserved pursuant to P.L. 35-115:…

§ 6141.60. Effective Dates. The provisions of 40 Code of Federal Regulations § 141.60, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.600. General Requirements. The provisions of 40 Code of Federal Regulations § 141.600, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.601. Standard Monitoring. The provisions of 40 Code of Federal Regulations § 141.601, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.602. System Specific Studies. The provisions of 40 Code of Federal Regulations § 141.602, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.603. 40/30 Certification. The provisions of 40 Code of Federal Regulations § 141.603, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.604. Very Small System Waivers. The provisions of 40 Code of Federal Regulations § 141.604, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.605. Subpart V Compliance Monitoring Location Recommendations. The provisions of 40 Code of Federal Regulations § 141.605, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART V S TAGE 2 D ISINFECTION B YPRODUCTS R EQUIREMENTS 2023 NOTE: Se…

§ 6141.606 - § 6141.619. [Reserved]. D IV . 2 W ATER C ONTROL C H . 6 - D RINKING W ATER R EGULATIONS 41

§ 6141.61. Maximum Contaminant Levels for Organic Contaminants. The provisions of 40 Code of Federal Regulations § 141.61, as revised and codified as of July 1, 2019 are hereby adopted by reference.

§ 6141.62. Maximum Contaminant Levels for Inorganic Contaminants. The provisions of 40 Code of Federal Regulations § 141.62, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.620. General Requirements. The provisions of 40 Code of Federal Regulations § 141.620, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.621. Routine Monitoring. The provisions of 40 Code of Federal Regulations § 141.621, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.622. Subpart V Monitoring Plan. The provisions of 40 Code of Federal Regulations § 141.622, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.623. Reduced Monitoring. The provisions of 40 Code of Federal Regulations § 141.623, as revised and codified as of July 1, 2019, are hereby adopted by reference. D IV . 2 W ATER C ONTROL C H . 6 - D RINKING W ATER R EGULATIONS 43

§ 6141.624. Additional Requirements for Consecutive Systems. The provisions of 40 Code of Federal Regulations § 141.624, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.625. Conditions Requiring Increased Monitoring. The provisions of 40 Code of Federal Regulations § 141.625, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.626. Operational Evaluation Levels. The provisions of 40 Code of Federal Regulations § 141.626, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.627. Requirements for Remaining on Reduced TTHM and HAA5 Monitoring Based on Subpart L Results. The provisions of 40 Code of Federal Regulations § 141.627, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.628. Requirements for Remaining on Increased TTHM and HAA5 Monitoring Based on Subpart L Results. The provisions of 40 Code of Federal Regulations § 141.628, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.629. Reporting and Recordkeeping Requirements. The provisions of 40 Code of Federal Regulations § 141.629, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART W E NHANCED T REATMENT FOR C RYPTOSPORIDIUM

§ 6141.63. Maximum Contaminant Levels (MCLs) for Microbiological Contaminants. The provisions of 40 Code of Federal Regulations § 141.63, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.630 - § 6141.699. [Reserved].

§ 6141.64. Maximum Contaminant Levels for Disinfection Byproducts. The provisions of 40 Code of Federal Regulations § 141.64, as revised and codified as of July 1, 2019, are hereby adopted by reference. D IV . 2 W ATER C ONTROL C H . 6 - D RINKING W ATER R EGULATIONS 18

§ 6141.65. Maximum Residual Disinfectant Levels. The provisions of 40 Code of Federal Regulations § 141.65, as revised and codified as of July 1, 2019, are hereby adopted by reference.

§ 6141.66. Maximum Contaminant Levels for Radionuclides. The provisions of 40 Code of Federal Regulations § 141.66, as revised and codified as of July 1, 2019, are hereby adopted by reference. S UBPART H F ILTRATION AND D ISINFECTION 2023 NOTE : Sections 6141.77 to 6141.79 are re…

§ 6141.67 - § 6141.69. [Reserved].

§ 6141.7 - § 6141.10. [Reserved].