Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart Z - ENHANCED TREATMENT FOR CRYPTOSPORIDIUM › Section 611.1016 - Requirements for Microbial Toolbox Components: Source Toolbox Components

Current through Register Vol. 48, No. 28, July 12, 2024
a) Watershed
				Control Program. A supplier receives 0.5 -log Cryptosporidium treatment credit
				for implementing a watershed control program that meets the requirements of
				this Section.
1) A supplier that intends to
				apply for the watershed control program credit must notify the Agency of its
				intent no later than two years prior to the treatment compliance date
				applicable to the supplier in Section
				611.1013.
2) A supplier must submit to the Agency a
				proposed watershed control plan no later than one year before the applicable
				treatment compliance date in Section 611.1013. The Agency must approve the
				watershed control plan for the supplier to receive watershed control program
				treatment credit. The watershed control plan must include the following
				elements:
A) Identification of an "area of
				influence" outside of which the likelihood of Cryptosporidium or fecal
				contamination affecting the treatment plant intake is not significant. This is
				the area to be evaluated in future watershed surveys under subsection
				(a)(5)(B);
B) Identification of
				both potential and actual sources of Cryptosporidium contamination and an
				assessment of the relative impact of these sources on the supplier's source
				water quality;
C) An analysis of
				the effectiveness and feasibility of control measures that could reduce
				Cryptosporidium loading from sources of contamination to the supplier's source
				water; and
D) A statement of goals
				and specific actions the supplier will undertake to reduce source water
				Cryptosporidium levels. The plan must explain how the actions are expected to
				contribute to specific goals, identify watershed partners and their roles,
				identify resource requirements and commitments, and include a schedule for plan
				implementation with deadlines for completing specific actions identified in the
				plan.
3) A supplier with
				an existing watershed control program (i.e., a program in place on January 5,
				2006) is eligible to seek this credit. Its watershed control plans must meet
				the criteria in subsection (a)(2) and must specify ongoing and future actions
				that will reduce source water Cryptosporidium levels.
4) If the Agency does not respond to a
				supplier regarding approval of a watershed control plan submitted under this
				Section and the supplier meets the other requirements of this Section, the
				watershed control program will be considered approved and 0.5 log
				Cryptosporidium treatment credit will be awarded, unless and until the Agency
				subsequently withdraws such approval by a SEP.
5) A supplier must complete each of the
				following actions to maintain the 0.5-log credit.
A) It must submit an annual watershed control
				program status report to the Agency. The annual watershed control program
				status report must describe the supplier's implementation of the approved plan
				and assess the adequacy of the plan to meet its goals. The report must explain
				how the supplier is addressing any shortcomings in plan implementation,
				including those previously identified by the Agency or as the result of the
				watershed survey conducted under subsection (a)(5)(B). The report must also
				describe any significant changes that have occurred in the watershed since the
				last watershed sanitary survey. If a supplier determines during implementation
				that making a significant change to its approved watershed control program is
				necessary, the supplier must notify the Agency prior to making any such
				changes. If any change is likely to reduce the level of source water
				protection, the supplier must also list in its notification the actions the
				supplier will take to mitigate this effect;
B) The supplier must undergo a watershed
				sanitary survey every three years for a CWS supplier and every five years for a
				non-CWS supplier and submit the survey report to the Agency. The survey must be
				conducted according to Agency guidelines and by persons that the Agency
				approves.
i) The watershed sanitary survey
				must meet the following criteria: it must encompass the region identified in
				the Agency-approved watershed control plan as the area of influence; assess the
				implementation of actions to reduce source water Cryptosporidium levels; and
				identify any significant new sources of Cryptosporidium.
ii) If the Agency determines that significant
				changes may have occurred in the watershed since the previous watershed
				sanitary survey, the supplier must undergo another watershed sanitary survey
				before a date the Agency requires by a SEP, which may be earlier than the
				regular date in subsection (a)(5)(B); and
C) The supplier must make the watershed
				control plan, annual status reports, and watershed sanitary survey reports
				available to the public upon request. These documents must be in a plain
				language style and include criteria by which to evaluate the success of the
				program in achieving plan goals. The Agency may, by a SEP, approve that a
				supplier withhold from the public portions of the annual status report,
				watershed control plan, and watershed sanitary survey based on water supply
				security considerations.
6) If the Agency determines that a supplier
				is not carrying out the approved watershed control plan, the Agency may, by a
				SEP, withdraw the watershed control program treatment credit.