Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart G - LEAD AND COPPER › Section 611.354 - Lead Service Line Inventory and Replacing Lead Service Lines

Current through Register Vol. 48, No. 28, July 12, 2024
a) Lead Service
				Line Inventory. A supplier must develop an inventory identifying the materials
				composition for all service lines connected to its distribution system. The
				inventory must meet specific requirements:
1)
				The supplier must develop an initial inventory before October 16, 2024 and
				submit the inventory to the Agency as Section
				611.360(e)
				requires.
2) The inventory must
				include all service lines connected to the supplier's distribution system
				regardless of ownership status (e.g., where the supplier shares service line
				ownership, the inventory would include both the supplier-owned and
				customer-owned portions of the service line).
3) When conducting the inventory of service
				lines in its distribution system for the initial inventory under subsection
				(a)(1), the supplier must use any information on lead and galvanized iron or
				steel system components the supplier identified complying with
				40 CFR
				141.42(d). The supplier must
				also review the sources of information in subsections (a)(3)(A) through
				(a)(3)(D) to identify service line materials for the initial inventory. The
				supplier may use other sources of information the Agency approves in a SEP.
A) All construction and plumbing codes,
				permits, and existing records or other documents indicating the service line
				materials connecting structures to its distribution system.
B) All supplier records, including
				distribution system maps and drawings, historical records on each service
				connection, meter installation records, historical capital improvement or
				master plans, and standard operating procedures.
C) All inspections and distribution system
				records indicating the materials composing the service connections connecting
				structures to its distribution system.
D) Any resource, information, or method for
				identifying and assessing service line materials the Agency provides or
				requires in a SEP.
4)
				The supplier must categorize every service line and supplier-owned portion of a
				service line under split ownership:
A) "Lead"
				for a lead service line.
B)
				"Galvanized Requiring Replacement" for a galvanized service line at any time
				downstream of a lead service line or currently downstream of a lead status
				unknown service line. If the supplier cannot demonstrate that a galvanized
				service line was never downstream of a lead service line, the supplier must
				presume a lead service line was upstream.
C) "Non-Lead" for a service line the supplier
				determines through an evidence-based record, method, or technique is not lead
				or galvanized requiring replacement under subsection (a)(4)(A) or (a)(4)(B).
				The supplier may classify the service line using its actual material of
				construction (e.g., "plastic" or "copper") as an alternative to
				non-lead.
D) "Lead Status Unknown"
				for a service line of material the supplier does not know is lead, galvanized
				requiring replacement, or non-lead service line under subsection (a)(4)(A),
				(a)(4)(B), or (a)(4)(C), e.g., if the supplier has no documented evidence
				supporting material classification. The supplier may classify the line as
				"unknown", as an alternative to classifying it as lead status unknown, however,
				all requirements applying to lead status unknown service lines will apply to
				those the supplier classifies as Unknown. A supplier may provide more
				information regarding its lead status unknown lines, as long as the inventory
				clearly distinguishes unknown service lines from those for which the supplier
				verified the material of construction through records or inspection.
BOARD NOTE: See the definition of "lead status unknown
				  service line" in Section
				  611.350(b).
5) The supplier must
				identify and track service line materials in its inventory as the supplier
				encounters them in the course of its normal operations (e.g., checking service
				line materials when reading water meters or performing maintenance
				activities).
6) The supplier must
				update its inventory based on all applicable sources in subsections (a)(3) and
				(a)(5) and any lead service line replacements or service line material
				inspections the supplier conducted. The supplier may use other sources of
				information the Agency approves in a SEP and must use other sources of
				information the Agency requires in a SEP. The supplier must submit the updated
				inventory to the Agency as Section
				611.360(e)
				requires. The publicly accessible inventory must reflect inventory updates no
				less frequently than when the supplier must submit them to the Agency.
A) A supplier whose inventory contains only
				non-lead service lines needs not provide inventory updates to the Agency or
				public. If the supplier subsequently finds a lead service line within its
				system, the supplier must prepare an updated inventory under subsection (a) on
				a schedule the Agency establishes in a SEP.
B) This subsection (a)(6)(B) corresponds with
				40 CFR
				141.84(a)(6)(ii), which
				USEPA marked "Reserved". This statement maintains structural consistency with
				USEPA's rule.
7) To
				calculate the number of service line replacements under subsections (f) or (g),
				the supplier must apply the replacement rate to the sum of known lead and
				galvanized requiring replacement service lines when the supplier first exceeds
				the lead trigger level or lead action level plus the number of lead status
				unknown service lines in the beginning of each year of the supplier's annual
				goal-based or mandatory full lead service line replacement program.
A) A supplier must count each service line
				only once when calculating the required number of service lines it must
				replace, even if the supplier shares service line ownership, and the supplier
				must replace both the customer-owned and system-owned portions.
B) The supplier must annually update the
				number of service lines it needs to replace by subtracting the number of lead
				status unknown service lines the supplier discovered are non-lead and adding
				the number of non-lead service lines the supplier discovered are lead or
				galvanized requiring replacement service lines.
C) Verifying a lead status unknown service
				line as non-lead in its inventory does not count as replacing a service line.
BOARD NOTE: Using the number of lead and galvanized requiring
				  replacement service lines at the time of first exceeding the lead trigger level
				  applies for subsection (f). The number at the time of first exceeding the lead
				  action level applies for subsection (g). The number of lead status unknown
				  service lines remaining at the beginning of each year applies to both.
8) The supplier must
				keep its service line materials inventory publicly accessible.
A) The inventory must include a locational
				identifier, such as a street address, block, intersection, or landmark, for
				each lead or galvanized requiring replacement service line. A supplier may
				include a locational identifier for lead status unknown service lines or list
				the exact address of each service line.
B) A supplier serving more than 50,000
				persons must make the publicly accessible inventory available online.
9) If a supplier has no lead,
				galvanized requiring replacement, or lead status unknown service lines
				(regardless of ownership) in its inventory, the supplier may comply with
				subsection (a)(8) using a written statement, in lieu of the inventory,
				declaring that its distribution system has no lead or galvanized requiring
				replacement service lines. The statement must include a general description of
				all applicable sources the supplier used under subsections (a)(3), (a)(5), and
				(a)(6) to determine these service lines are absent.
10) The supplier must include instructions
				for accessing the service line inventory (including inventories consisting only
				of a statement under subsection (a)(9)) in its Consumer Confidence Report under
				Section 141.153(d)(4)(K).