Alabama Administrative Code › Title 335 - ALABAMA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT › WATER DIVISION - WATER SUPPLY PROGRAM › Chapter 335-7-5 - GROUNDWATER SOURCES AND TREATMENT › Section 335-7-5-.22 - Ground Water Rule

Current through Register Vol. 42, No. 9, June 28, 2024
(1)
Applicability
. This rule applies to all public water
				systems that use ground water except that it does not apply to public water
				systems that combine all of their ground water with surface water or with
				ground water under the direct influence of surface water prior to treatment of
				surface water or ground water under the influence of surface water. For the
				purposes of this rule, "ground water system" is defined as any public water
				system meeting this applicability statement, including consecutive systems
				receiving finished ground water.
(2) General requirements. Systems subject to
				this rule must comply with the following requirements:
(a) Sanitary survey information requirements
				for all ground water systems as described in paragraph (4) of this
				rule.
(b) Microbial source water
				monitoring requirements for ground water systems that do not treat all of their
				ground water to at least 99.99 percent (4-log) treatment of viruses (using
				inactivation, removal, or a Department-approved combination of 4-log virus
				inactivation and removal) before or at the first customer as described in
				paragraph (5) of this rule.
(c)
				Treatment technique requirements, described in paragraph (6) of this rule, that
				apply to ground water systems that have fecally contaminated source waters, as
				determined by source water monitoring conducted under paragraph (5) of this
				rule, or that have significant deficiencies that are identified by the
				Department or that are identified by EPA under SDWA Section 1445. A ground
				water system with fecally contaminated source water or with significant
				deficiencies subject to the treatment technique requirements of this rule must
				implement one or more of the following corrective action options: correct all
				significant deficiencies; provide an alternate source of water; eliminate the
				source of contamination; or provide treatment that reliably achieves at least
				4-log treatment of viruses (using inactivation, removal, or a
				Department-approved combination of 4-log virus inactivation and removal) before
				or at the first customer.
(d)
				Ground water systems that provide at least 4-log treatment of viruses (using
				inactivation, removal, or a Department-approved combination of 4-log virus
				inactivation and removal) before or at the first customer are required to
				conduct compliance monitoring to demonstrate treatment effectiveness, as
				described in subparagraph (6)(b) of this rule.
(e) If requested by the Department, ground
				water systems must provide the Department with any existing information that
				will enable the Department to perform a hydrogeologic sensitivity assessment.
				For the purposes of this rule, "hydrogeologic sensitivity assessment" is a
				determination of whether ground water systems obtain water from
				hydrogeologically sensitive settings.