Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 8 - PUBLIC WATER SUPPLY
Rule 2 - Drinking Water Standards
Section 2-5.4 - Volatile organic compounds; maximum contaminant levels for community water systems and nontransient noncommunity water systems

Universal Citation: 327 IN Admin Code 2-5.4

Current through September 18, 2024

Authority: IC 13-1-3-4; IC 13-7

Affected: IC 13-7

Sec. 5.4.

(a) The following MCLs for volatile organic compounds (VOCs) apply to community water systems and nontransient noncommunity water systems:

CAS No. Contaminant Level in Milligrams Per Liter
71-43-2 Benzene 0.005
75-01-4 Vinyl chloride 0.002
56-23-5 Carbon tetrachloride 0.005
107-06-2 1,2-dichloroethane 0.005
79-01-6 Trichloroethylene 0.005
75-35-4 1,1-dichloroethylene 0.007
71-55-6 1,1,1-trichloroethane 0.2
106-46-7 para-dichlorobenzene 0.075
156-59-2 cis-1,2-dichloroethylene 0.07
78-87-5 1,2-dichloropropane 0.005
100-41-4 Ethylbenzene 0.7
108-90-7 Monochlorobenzene 0.1
95-50-1 ortho-dichlorobenzene 0.6
100-42-5 Styrene 0.1
127-18-4 Tetrachloroethylene 0.005
108-88-3 Toluene 1
156-60-5 trans-1,2-dichloroethylene 0.1
1330-20-7 Xylenes (total) 10
75-09-2 Dichloromethane 0.005
120-82-1 1,2,4-trichlorobenzene 0.07
79-00-5 1,1,2-trichloroethane 0.005

(b) BAT for achieving compliance with the MCL for the volatile organic compounds listed in subsection (a) is:

(1) central treatment using packed tower aeration except toluene;

(2) central treatment using granular activated carbon for each chemical except vinyl chloride and dichloromethane; or

(3) other means available for achieving compliance with the maximum contaminant levels identified in subsection (a).

(c) Monitoring frequency and compliance with MCLs for VOCs are determined under section 5.5 of this rule.

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