Compilation of Rules and Regulations of the State of Georgia › Department 391 - RULES OF GEORGIA DEPARTMENT OF NATURAL RESOURCES › Chapter 391-3 - ENVIRONMENTAL PROTECTION › Subject 391-3-5 - RULES FOR SAFE DRINKING WATER › Rule 391-3-5-.26 - Unregulated Contaminants Sampling and Analytical Requirements

Current through Rules and Regulations filed through June 27,
				2024
(1)
Contaminant Monitoring.
Monitoring of the contaminants listed below in this section
				  shall be conducted as follows:
(a) All
				community and non-transient, non-community water systems shall monitor for the
				contaminants listed in paragraphs (e) and (f) of this section by the date
				specified in Table 1. Systems serving 10,000 or fewer persons are not required
				to monitor for the contaminants in this section after December 31, 1998.
TABLE 1 - MONITORING SCHEDULE BY SYSTEM
				  SIZE
Population
								Served
Monitoring to Begin No Later
								Than
Over 10,000
January 1, 1993
3,300 to 10,000
January 1, 1994
Less than 3,300
January 1, 1996
(b)
				Surface water systems shall sample at points in the distribution system
				representative of each water source or at entry points to the distribution
				system after application of treatment. The minimum number of samples is one
				year of quarterly samples per water source.
(c) Ground water systems shall sample at
				points of entry to the distribution system representative of each well after
				any application of treatment. The minimum number of samples is one sample per
				entry point to the distribution system.
(d) The Division may require confirmation
				samples for positive or negative results.
(e) Group III Unregulated Volatile Organic
				Contaminants.
Group III Unregulated Volatile
								Organic Contaminants
Chloroform
Bromodichloromethane
Chlorodibromomethane
Bromoform
Dibromomethane
m-Dichlorobenzene
1,1-Dichloropropene
1,1-Dichloroethane
1,1,2,2-Tetrachloroethane
1,3-Dichloropropane
Chloromethane
Bromomethane
1,2,3-Trichloropropane
1,1,1,2-Tetrachloroethane
Chloroethane
2,2-Dichloropropane
o-Chlorotoluene
p-Chlorotoluene
Bromobenzene
1,3-Dichloropropene
(f)
				Group IV Unregulated Volatile Organic Contaminants.
Group IV Unregulated Volatile
								Organic Contaminants
1,2,4-Trimethylbenzene
1,2,3-Trichlorobenzene
n-Propylbenzene
n-Butylbenzene
Naphthalene
Hexachlorobutadiene
1,3,5-Trimethylbenzene
p-Isopropyltoluene
Isopropylbenzene
Tert-butylbenzene
Sec-butylbenzene
Fluorotrichloromethane
Dichlorofluoromethane
Bromochloromethane
(g)
				Instead of performing the monitoring required by this section, a community
				water system or non-transient non-community water system serving fewer than 150
				service connections may send a letter to the Division stating that the system
				is available for sampling. This letter must be sent to the Division by January
				1, 1994. The system shall not send such samples to the Division, unless
				requested to do so by the Division.
(h) All community and non-transient,
				non-community water systems shall repeat the monitoring required in Section
				391-3-5-.26(1) no
				less than every five (5) years from the dates specified in Section
				391-3-5-.26(1)(a).
(i) The Division may allow the public water
				system to composite up to five samples when monitoring for substances listed in
				Section 391-3-5-.26(1)(e) and
				(f).
(j) Analysis under this section shall only be
				conducted by laboratories certified by the Division in accordance with Section
				391-3-5-.29.