Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart Z - ENHANCED TREATMENT FOR CRYPTOSPORIDIUM › Section 611.1011 - Treatment Technique Requirements: Filtered System Additional Cryptosporidium Treatment Requirements

Current through Register Vol. 48, No. 28, July 12, 2024
a) A
				filtered system supplier must provide the level of additional treatment for
				Cryptosporidium specified in subsections (a)(1) through (a)(4) based on its bin
				classification, as determined under Section
				611.1010,
				and according to the applicable schedule set forth in Section
				611.1013.
1) If the supplier's bin classification is
				Bin 1, and the supplier uses conventional filtration treatment (including
				softening) in full compliance with the applicable provisions of Subparts B, R,
				and X, no additional treatment is required.
2) If the supplier's bin classification is
				Bin 2, and the supplier uses conventional filtration treatment (including
				softening) in full compliance with the applicable provisions of Subparts B, R,
				and X, then the additional Cryptosporidium treatment requirements are a 1-log
				treatment.
3) If the supplier's bin
				classification is Bin 2, and the supplier uses direct filtration in full
				compliance with the applicable provisions of Subparts B, R, and X, then the
				additional Cryptosporidium treatment requirements are a
				1.5 -log
				treatment.
4) If the supplier's bin
				classification is Bin 2, and the supplier uses slow sand or diatomaceous earth
				filtration in full compliance with the applicable provisions of Subparts B, R,
				and X, then the additional Cryptosporidium treatment requirements are a 1-log
				treatment.
5) If the supplier's bin
				classification is Bin 2, and the supplier uses alternative filtration
				technologies in full compliance with the applicable provisions of Subparts B,
				R, and X, then the additional Cryptosporidium treatment requirements are as
				determined by the Agency, by a SEP issued under Section
				611.110,
				such that the total Cryptosporidium removal and inactivation is at least 4.0
				-log.
6) If the supplier's bin
				classification is Bin 3, and the supplier uses conventional filtration
				treatment (including softening) in full compliance with the applicable
				provisions of Subparts B, R, and X, then the additional Cryptosporidium
				treatment requirements are a 2-log treatment.
7) If the supplier's bin classification is
				Bin 3, and the supplier uses direct filtration in full compliance with the
				applicable provisions of Subparts B, R, and X, then the additional
				Cryptosporidium treatment requirements are a 2.5 -log treatment.
8) If the supplier's bin classification is
				Bin 3, and the supplier uses slow sand or diatomaceous earth filtration in full
				compliance with the applicable provisions of Subparts B, R, and X, then the
				additional Cryptosporidium treatment requirements are a 2-log
				treatment.
9) If the supplier's bin
				classification is Bin 3, and the supplier uses alternative filtration
				technologies in full compliance with the applicable provisions of Subparts B,
				R, and X, then the additional Cryptosporidium treatment requirements are as
				determined by the Agency, by a SEP, such that the total Cryptosporidium removal
				and inactivation is at least 5.0 -log.
10) If the supplier's bin classification is
				Bin 4, and the supplier uses conventional filtration treatment (including
				softening) in full compliance with the applicable provisions of Subparts B, R,
				and X, then the additional Cryptosporidium treatment requirements are a 2.5-log
				treatment.
11) If the supplier's
				bin classification is Bin 4, and the supplier uses direct filtration in full
				compliance with the applicable provisions of Subparts B, R, and X, then the
				additional Cryptosporidium treatment requirements are a 3-log
				treatment.
12) If the supplier's
				bin classification is Bin 4, and the supplier uses slow sand or diatomaceous
				earth filtration in full compliance with the applicable provisions of Subparts
				B, R, and X, then the additional Cryptosporidium treatment requirements are a
				2.5-log treatment.
13) If the
				supplier's bin classification is Bin 4, and the supplier uses alternative
				filtration technologies in full compliance with the applicable provisions of
				Subparts B, R, and X, then the additional Cryptosporidium treatment
				requirements are as determined by the Agency, by a SEP, such that the total
				Cryptosporidium removal and inactivation is at least 5.5 -log.