62-560.610. Best Available Technology for Achieving Compliance with a Maximum Contaminant Level or Maximum Residual Disinfectant Level

(1) The technologies listed in Table 1 are Best Available Technology for achieving compliance with the maximum contaminant levels for inorganic contaminants listed in subsection 62-550.310(1), F.A.C.

(2) Best Available Technology for achieving compliance with the maximum residual disinfectant levels listed in subsection 62-550.310(2), F.A.C., is control of treatment processes to reduce disinfectant demand or control of disinfection treatment processes to reduce disinfectant levels.

(3) The Administrator of the U.S. Environmental Protection Agency, pursuant to section 1412 of the Federal Safe Drinking Water Act, hereby identifies the following as the best technology, treatment techniques, or other means available for achieving compliance with the maximum contaminant levels for bromate and chlorite identified in 40 C.F.R. §141.64(a) (which is incorporated in subparagraph 62-550.310(3)(a)1., F.A.C.):

DISINFECTION BYPRODUCT	BEST AVAILABLE TECHNOLOGY
Bromate	Control of ozone treatment process to reduce production of bromate
Chlorite	Control of treatment processes to reduce disinfectant demand and control of disinfection treatment processes to reduce disinfectant levels

(40 C.F.R. §141.64(a)(2) (July 1, 2011))

(4) The Administrator of the U.S. Environmental Protection Agency, pursuant to section 1412 of the Federal Safe Drinking Water Act, hereby identifies the following as the best technology, treatment techniques, or other means available for achieving compliance with the maximum contaminant levels for total trihalomethanes (TTHM) and haloacetic acids (five) (HAA5) identified in 40 C.F.R. §141.64(b)(1)(i) (which is incorporated in sub-subparagraph 62-550.310(3)(b)1.a., F.A.C.):

DISINFECTION BYPRODUCT	BEST AVAILABLE TECHNOLOGY
TTHM and HAA5	Enhanced coagulation or enhanced softening or GAC10, with chlorine as the primary and residual disinfectant

(40 C.F.R. §141.64(b)(1)(ii) (July 1, 2011))

(5) The Administrator of the U.S. Environmental Protection Agency, pursuant to section 1412 of the Federal Safe Drinking Water Act, hereby identifies the following as the best technology, treatment techniques, or other means available for achieving compliance with the maximum contaminant levels for total trihalomethanes (TTHM) and haloacetic acids (five) (HAA5) identified in 40 C.F.R. §141.64(b)(2)(i) (which is incorporated in sub-subparagraph 62-550.310(3)(b)2.a., F.A.C.) for all systems that disinfect their source water:

DISINFECTION BYPRODUCT	BEST AVAILABLE TECHNOLOGY
TTHM and HAA5	Enhanced coagulation or enhanced softening, plus GAC10; or nanofiltration with a molecular weight cutoff ≤ 1000 Daltons; or GAC20

(40 C.F.R. §141.64(b)(2)(ii) (July 1, 2011))

(6) The Administrator of the U.S. Environmental Protection Agency, pursuant to section 1412 of the Federal Safe Drinking Water Act, hereby identifies the following as the best technology, treatment techniques, or other means available for achieving compliance with the maximum contaminant levels for total trihalomethanes (TTHM) and haloacetic acids (five) (HAA5) identified in 40 C.F.R. §141.64(b)(2)(i) (which is incorporated in sub-subparagraph 62-550.310(3)(b)2.a., F.A.C.) for consecutive systems and applies only to the disinfected water that consecutive systems buy or otherwise receive:

DISINFECTION BYPRODUCT	BEST AVAILABLE TECHNOLOGY
TTHM and HAA5	Systems serving ≥ 10,000: Improved distribution system and storage tank management to reduce residence time, plus the use of chloramines for disinfectant residual maintenance Systems serving < 10,000: Improved distribution system and storage tank management to reduce residence time

(40 C.F.R. §141.64(b)(2)(iii) (July 1, 2011))

(7) The technologies listed in Table 3 are Best Available Technology for achieving compliance with the maximum contaminant levels for organic contaminants listed in subsection 62-550.310(4), F.A.C.

(8) Best Available Technology for achieving compliance with the maximum contaminant level for microbiological contaminants listed in subsection 62-550.310(5), F.A.C., includes the following:

(a) Protection of wells from fecal contamination by appropriate placement and construction; (40 C.F.R. §141.63(e)(1) revised as of July 1, 2014.) This paragraph shall be effective on July 7, 2015.

(b) Maintenance of a disinfectant residual throughout the distribution system;

(c) Proper maintenance of the distribution system including appropriate pipe replacement and repair procedures, main flushing programs, proper operation and maintenance of storage tanks and reservoirs, cross-connection control, and continual maintenance of positive water pressure in all parts of the distribution system; (40 C.F.R. §141.63(e)(3) revised as of July 1, 2014.) This paragraph shall be effective on July 7, 2015.

(d) Filtration or disinfection of surface water, as described in 40 C.F.R. Part 141, Subparts H, P, T, and W, as incorporated in subsections 62-550.817(1), (2), (3), and (4), F.A.C., or disinfection of ground water, as described in 40 C.F.R. Part 141, Subpart S, as incorporated in Rule 62-550.828, F.A.C., using strong oxidants such as chlorine, chlorine dioxide, or ozone; and (40 C.F.R. §141.63(e)(4) revised as of July 1, 2014.) This paragraph shall be effective on July 7, 2015.

(e) For systems using ground water, compliance with the requirements of an Environmental Protection Agency-approved State Wellhead Protection Program developed and implemented under Section 1428 of the Federal Safe Drinking Water Act. (40 C.F.R. §141.63(e)(5) revised as of July 1, 2014.) This paragraph shall be effective on July 7, 2015.

(9) The technologies listed in Table 4 are Best Available Technology for achieving compliance with the maximum contaminant levels for radionuclides listed in subsection 62-550.310(6), F.A.C.

Rulemaking Authority 403.8055, 403.861(9) FS. Law Implemented 403.0877, 403.853 FS. History–New 11-19-87, Formerly 17-22.510, Amended 1-18-89, 1-3-91, 1-1-93, 1-26-93, Formerly 17-560.610, Amended 11-27-01, 4-14-03, 12-30-11, 7-7-15.