Sec. 7.
(a) The
requirements of this section and sections 8 through 22 of this rule establish
or extend treatment technique requirements in lieu of MCLs for Cryptosporidium.
These requirements are in addition to requirements for filtration and
disinfection under the following:
(1)
327 IAC
8-2-8.5.
(2)
327 IAC
8-2-8.6.
(3)
327
IAC 8-2-8.7.
(4)
327
IAC 8-2-8.8.
(5)
327
IAC 8-2-14.
(6) Sections 1 through 5 of this
rule.
(b) The
requirements of this section and sections 8 through 22 of this rule apply to
the following:
(1) Subpart H systems supplied
by a surface water source.
(2) PWSs
supplied by a surface water source.
(3) PWSs supplied by a ground water source
under the direct influence of surface water.
(4) Wholesale systems, as defined under
327 IAC 8-2-1. These
systems shall comply with the requirements of this section and sections 8
through 22 of this rule based on the population of the largest system in the
combined distribution system.
(5)
PWSs that are required to provide filtration treatment, whether or not the
system is currently operating a filtration system.
(c) A PWS subject to this rule shall comply
with the following requirements:
(1) A PWS
shall conduct an initial and a second round of source water monitoring for each
water treatment plant that treats a surface water or ground water under the
direct influence of surface water source. This monitoring may include sampling
for:
(A) Cryptosporidium;
(B) E. coli; and
(C) turbidity;
as described under
40 CFR
141.701 through
40 CFR
141.706, as incorporated by reference in
section 8(a) of this rule, to determine what level, if any, of additional
Cryptosporidium treatment the PWS shall provide.
(2) A PWS that plans to make a significant
change to its disinfection practice shall:
(A) develop disinfection profiles;
and
(B) calculate disinfection
benchmarks;
as described under sections 9 and 10 of this rule.
(3) A filtered system
shall comply with the following:
(A) Determine
its Cryptosporidium treatment bin classification as described under section 11
of this rule.
(B) Provide
additional treatment for Cryptosporidium, if required, as described under
section 12 of this rule.
(C)
Implement Cryptosporidium treatment according to the applicable compliance date
under section 13 of this rule.
(4) A PWS with uncovered finished water
storage facilities shall comply with the requirements to:
(A) cover the facility; or
(B) treat the discharge from the facility; as
described under section 14 of this rule.
(5) A PWS that is required to provide
additional treatment for Cryptosporidium shall implement microbial toolbox
options that are designed and operated as described under sections 15 through
20 of this rule.
(6) A PWS shall
comply with the applicable record keeping and reporting requirements described
under sections 21 and 22 of this rule.
