Statutes, codes, and regulations
Maryland Administrative code
Title 26 - DEPARTMENT OF ENVIRONMENTPart 1 - SUBTITLES 01-07Subtitle 04 - REGULATION OF WATER SUPPLY, SEWAGE DISPOSAL, AND SOLID WASTE
Chapter 26.04.01 - Quality of Drinking Water in Maryland
Section 26.04.01.07-1 - Best Available Technology for Organic Chemicals

Md. Code Regs. 26.04.01.07-1

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Current through Register Vol. 51, No. 24, December 2, 2024
Section 26.04.01.07-1 - Best Available Technology for Organic Chemicals
A. The Approving Authority has identified the best available technology to achieve the maximum contaminant levels for contaminants listed in Regulation .07D and E of this chapter. These technologies include granular activated carbon (GAC), packed tower aeration (PTA), and oxidation (OX).
B. The best available technology for each contaminant listed in Regulation .07D and E of this chapter is specified in the following table:

BAT for Chemicals Listed in Regulation .07D and E of This Chapter

ContaminantGACPTAOX
(1) AlachlorX
(2) AtrazineX
(3) BenzeneXX
(4) Benzo[a]pyreneX
(5) CarbofuranX
(6) Carbon tetrachlorideXX
(7) ChlordaneX
(8) DalaponX
(9) 2,4-DX
(10) Di-(2-ethylhexyl)adipateXX
(11) Di(2-ethylhexyl)phthalateX
(12) DibromochloropropaneXX
(13) o-DichlorobenzeneXX
(14) para-DichlorobenzeneXX
(15) 1,2-DichloroethaneXX
(16) 1,1-DichloroethyleneXX
(17) cis-1,2-DichloroethyleneXX
(18) trans-1,2-DichloroethyleneXX
(19) DichloromethaneX
(20) 1,2-DichloropropaneXX
(21) DinosebX
(22) DiquatX
(23) EndothallX
(24) EndrinX
(25) EthylbenzeneXX
(26) Ethylene dibromide (EDB)XX
(27) GlyphosateX
(28) HeptaclorX
(29) Heptachlor epoxideX
(30) HexachlorobenzeneX
(31) HexachlorocyclopentadieneXX
(32) LindaneX
(33) MethoxychlorX
(34) MonochlorobenzeneXX
(35) Oxamyl (vydate)X
(36) PentachlorophenolX
(37) PicloramX
(38) Polychlorinated biphenyls (PCB)X
(39) SimazineX
(40) StyreneXX
(41) 2,3,7,8-TCDD (dioxin)X
(42) TetrachloroethyleneXX
(43) TolueneXX
(44) ToxapheneX
(45) 2,4,5-TP (Silvex)X
(46) 1,2,4-TrichlorobenzeneXX
(47) 1,1,1-TrichloroethaneXX
(48) 1,1,2-TrichloroethaneXX
(49) TrichloroethyleneXX
(50) Vinyl chlorideX
(51) XyleneXX

C. Disinfection Byproducts and Disinfectants. The best available technology, treatment technique, or other means available for each contaminant listed in Regulations .07F and .23C of this chapter is specified in the following table:

Disinfection ByproductBest Available Technology
TTHM, HAA5Primary Systems: Enhanced coagulation or enhanced softening or GAC10, with chlorine as the primary and residual disinfectant.
Primary systems that disinfect their source water: Enhanced coagulation or enhanced softening, plus GAC10; or nanofiltration with a molecular weight cutoff not greater than or equal to 1,000 Daltons; or GAC20.
Consecutive systems that receive disinfected water:Systems serving 10,000 or more: Improved distribution system and storage tank management to reduce residence time, plus the use of chloramines for disinfectant residual maintenance.
Systems serving less than 10,000: Improved distribution system and storage tank management to reduce residence time.
BromateControl of ozone treatment process to reduce production of bromate.
ChloriteControl of treatment processes to reduce disinfectant demand and control of disinfection treatment processes to reduce disinfectant levels.
Maximum residual disinfectant levelsControl of treatment processes to reduce disinfectant demand and control of disinfection treatment processes to reduce disinfectant levels.

Md. Code Regs. 26.04.01.07-1

Regulations .07-1 amended effective August 10, 1987 (14:16 Md. R. 1774)
Regulation .07-1 amended effective December 14, 2009 (36:25 Md. R. 1956)