Ohio Admin. Code 3745-81-81 - Control of lead and copper; applicability of corrosion control treatment steps to small, medium, and large water systems
(A) Public water systems shall complete the
applicable corrosion control treatment requirements described in rule
3745-81-82
of the Administrative Code by the deadlines established in this rule.
(1) A large system (serving more than fifty
thousand persons) shall complete the corrosion control treatment steps
specified in paragraph (D) of this rule, unless it
is deemed to have optimized corrosion control under paragraph (B)(2) or (B) (3)
of this rule
otherwise determined by the
director .
(2) A small system
(serving less than or equal to three thousand three hundred persons) and a
medium system (serving more than three thousand three hundred and less than or
equal to fifty thousand persons) shall complete the corrosion control treatment
steps specified in paragraph (E) of this rule, unless
it is deemed to have optimized corrosion control
under paragraph (B)(1), (B)(2), or (B)(3) of this rule
otherwise
determined by the director .
(B) A public water system is deemed to have
optimized corrosion control and is
may not be required to
complete the applicable corrosion control treatment steps identified in this
rule if the system satisfies one of the criteria specified in paragraphs (B)(1)
to (B)(3) of this rule. Any such system deemed to have optimized corrosion
control under this paragraph, and which has treatment in place, shall continue
to operate and maintain optimal corrosion control treatment and meet any
requirements that the director determines appropriate to ensure optimal
corrosion control treatment is maintained.
(1)
A small or medium water system is deemed to have optimized corrosion control if
during each of two consecutive six-month monitoring
periods conducted in accordance with rule
3745-81-86
of the Administrative Code the system does not exceed the lead or
copper action levels
level has not been exceeded .
(2) Any public water system may be deemed by
the director to have optimized corrosion control treatment if the system
demonstrates to the satisfaction of the director that
it
the system
has conducted activities equivalent to the corrosion control steps applicable
to such system under this rule. If the director makes this determination, the
director shall provide the system with written notice explaining the basis for
the director's decision and shall specify the water quality control parameters
representing optimal corrosion control in accordance with paragraph (F) of rule
3745-81-82
of the Administrative Code. Water systems deemed to have optimized corrosion
control under this paragraph shall operate in compliance with the designated
optimal water quality control parameters in accordance with paragraph (G) of
rule
3745-81-82
of the Administrative Code and continue to conduct lead and copper tap and
water quality parameter sampling in accordance with paragraph (D)(3) of rule
3745-81-86
and paragraph (D) of rule
3745-81-87
of the Administrative Code, respectively. A system shall provide the director
with the following information in order to support a determination under this
paragraph:
(a) The results of all test
samples collected for each of the water quality parameters in paragraph (C)(3)
of rule
3745-81-82
of the Administrative Code.
(b) A
report explaining the test methods used by the water system to evaluate the
corrosion control treatments listed in paragraph (C)(1) of rule
3745-81-82
of the Administrative Code, the results of all tests conducted, and the basis
for the system's selection of optimal corrosion control treatment.
(c) A report explaining how corrosion control
has been installed and how it is being maintained to insure minimal lead and
copper concentrations at consumers' taps.
(d) The results of tap water monitoring with
samples collected in accordance with rule
3745-81-86
of the Administrative Code at least once every six months for one year after
corrosion control has been installed.
(3) Any water system is deemed to have
optimized corrosion control if, for two consecutive six-month monitoring
periods, the difference between the ninetieth percentile tap water level
computed under paragraph (C)(3) of rule
3745-81-80
of the Administrative Code and the highest source water at the entry point to
the distribution system lead concentration is less than the practical
quantitation level (PQL) of 0.005 milligrams per liter. Monitoring shall be
conducted in accordance with rules
3745-81-86
and
3745-81-88
of the Administrative Code.
(a) Those systems
whose highest source water at the entry point to the distribution system lead
level is below the method detection limit (MDL) may also be deemed to have
optimized corrosion control under this paragraph if the ninetieth percentile
tap water lead level is less than or equal to the PQL of 0.005 milligram per
liter for two consecutive six-month monitoring periods.
(b) Any water system deemed to have optimized
corrosion control in accordance with this paragraph shall continue monitoring
for lead and copper at the tap no less frequently
than once every three calendar years using the reduced number of sites
specified in accordance with paragraph
(C) of rule
3745-81-86
of the Administrative Code and collecting
the samples at times and locations specified in paragraph
(D)(4)(d)
(D)
of rule
3745-81-86
of the Administrative Code.
(c) Any
water system deemed to have optimized corrosion control in accordance with this
paragraph shall notify
submit water quality information to the director
in writing of
with
plan submittal, as required, for any change or modification in treatment
or the addition of a new source in accordance with paragraph (A)(3) of rule
3745-81-90
of the Administrative Code . The director shall review
and approve the addition of a new source or substantial change in treatment
before it is implemented by the water system. The director may require any such
water system to conduct additional monitoring, perform
corrosion control studies or to take other action the director deems
appropriate to ensure that minimal levels of corrosion in the distribution
system are maintained.
(d) As of
the effective date of this rule, a system is not deemed to have optimized
corrosion control under this paragraph, and shall implement corrosion control
treatment pursuant to paragraph (B)(3)(e) of this rule unless
it
the system
meets the lead and copper action level.
(e) Any system triggered into corrosion
control because it is no longer deemed to have optimized corrosion control
under this paragraph shall implement corrosion control treatment in accordance
with the deadlines in paragraph (E) of this rule. Any such large system shall
adhere to the schedule specified in that paragraph for medium systems, with the
time periods for completing each step being triggered by the date the system is
no longer deemed to have optimized corrosion control under this
paragraph.
(C)
Any small or medium water system that is required to
complete the corrosion control steps due to exceeding the lead or copper action
level may cease completing the treatment steps whenever both action levels are
no longer exceeded by the public water system during each of two consecutive
monitoring periods conducted pursuant to rule
3745-81-86
of the Administrative Code and the system submits the results to the director.
If any such water system thereafter exceeds the lead or copper action level
during any monitoring period, the system shall recommence completion of the
applicable treatment steps, beginning with the first treatment step which was
not previously completed in its entirety and shall implement corrosion control
treatment per corrosion control treatment plans that have been approved by the
director in accordance with Chapter 3745-91 of the Administrative Code. The
second exceedance does not have to be the same chemical (lead or copper) as the
first exceedance. The director may require a system to repeat treatment steps
previously completed where the director determines that this is necessary to
implement properly the treatment requirements of this rule. The director shall
notify the system in writing of such a determination and explain the basis for
the decision. The requirement for any small
or medium water system to implement corrosion control treatment steps
in accordance with paragraph (D) of this rule for large
systems and paragraph (E) of this rule (including systems deemed to have optimized corrosion
control under paragraph (B)(1) of this rule)
for small or medium systems, including systems previously
deemed to have optimized corrosion control under paragraph (B) of this
rule, is triggered whenever monitoring exceeds the lead or copper action
level.
(D) Treatment steps for
large systems. Except as provided in paragraphs (B)(2) and (B)(3) of this rule,
large systems shall complete the following corrosion control treatment steps
(described in the referenced portions of rules
3745-81-82,
3745-81-86,
and
3745-81-87
of the Administrative Code).
:
(1) Step one: The
system shall conduct initial monitoring (in accordance with paragraph (D)(1) of
rule
3745-81-86
and paragraph (B) of rule
3745-81-87
of the Administrative Code) during two consecutive six-month monitoring
periods.
(2) Step two: The system
shall complete corrosion control studies and submit
plans for approval for optimal corrosion control treatment (in accordance
with paragraph (C) of rule
3745-81-82
of the Administrative Code) within eighteen months
after the director requires that such studies be conducted. The system shall
submit interim status reports of action taken to complete the studies once
every six months from the initiation of the corrosion control
studies .
(3) Step three: The
director shall complete the review and approval of optimal corrosion control
treatment plans (in accordance with paragraph (D) of rule
3745-81-82
of the Administrative Code).
(4)
Step four: The system shall install optimal corrosion control treatment (in
accordance with paragraph (E) of rule
3745-81-82
of the Administrative Code) within six months after the
director approves plans unless an alternative schedule is approved by the
director .
(5) Step five: The
system shall complete follow-up monitoring after
installation of treatment (in accordance with paragraph (D)(2) of rule
3745-81-86
of the Administrative Code and paragraph (C) of rule
3745-81-87
of the Administrative Code).
(6)
Step six: The director shall review installation of treatment and specify
optimal water quality parameters (in accordance with paragraph (F) of rule
3745-81-82
of the Administrative Code) after completion of step
five .
(7) Step seven: The
system shall operate in compliance with the director-specified optimal water
quality control parameters (in accordance with paragraph (G) of rule
3745-81-82
of the Administrative Code) and continue to conduct tap sampling (in accordance
with paragraph (D)(3) of rule
3745-81-86
of the Administrative Code and paragraph (D) of rule
3745-81-87
of the Administrative Code).
(E) Treatment steps and deadlines for small
and medium systems. Except as provided in paragraph (B) of this rule, small and
medium systems shall complete the following corrosion control treatment steps
(described in the referenced portions of rules
3745-81-82,
3745-81-86,
and
3745-81-87
of the Administrative Code) within the indicated time periods.
:
(1) Step one: The system shall conduct
initial tap monitoring (in accordance with paragraph (D)(1) of rule
3745-81-86
of the Administrative Code and paragraph (B) of rule
3745-81-87
of the Administrative Code) until the system either exceeds the lead or copper
action level or becomes eligible for reduced monitoring under paragraph (D)(4)
of rule
3745-81-86
of the Administrative Code.
, as follows:
(a) A small system exceeding the lead or
copper action level shall recommend optimal corrosion control treatment (in
accordance with paragraph (A) of rule
3745-81-82
of the Administrative Code), and submit plans therefor if required by Chapter 3745-91 of the
Administrative Code, within six months after the end of the monitoring period
during which it exceeds one of the action levels.
(b) A medium system exceeding the lead or
copper action level shall proceed to step two, paragraph (E)(2) of this rule,
requiring corrosion control studies (in accordance with paragraph (B) of rule
3745-81-82
of the Administrative Code).
(2) Step two: Within twelve months after the
end of the monitoring period during which a small system exceeds the lead or
copper action level, the director may require the system to perform corrosion
control studies (in accordance with paragraph (B) of rule
3745-81-82
of the Administrative Code). If the director does not require the small system
to perform such studies, the director shall complete the review and approval of
optimal corrosion control treatment plans (in accordance with paragraph (D) of
rule
3745-81-82
of the Administrative Code) within twenty-four
twelve
months after the end of the monitoring period during which the system exceeds
the lead or copper action level.
Any medium system exceeding the lead or copper action level is required to perform corrosion control studies (in accordance with paragraph (B) of rule 3745-81-82 of the Administrative Code).
(3) Step three: When the director requires a
system to perform corrosion control studies under step two, the system shall
complete the studies and submit approvable plans for optimum corrosion control
treatment (in accordance with paragraph (C) of rule
3745-81-82
of the Administrative Code) within eighteen months after the director requires
that such studies be conducted. The system shall submit
interim status reports of action taken to complete the studies once every six
months from the initiation of the corrosion control studies.
(4) Step four: If the system has performed
corrosion control studies under step two, the director shall complete the
review and approval of optimal corrosion control treatment plans (in accordance
with paragraph (D) of rule
3745-81-82
of the Administrative Code) within six
months after completion of step three.
(5) Step five: The system shall install
optimal corrosion control treatment (in accordance with paragraph (E) of rule
3745-81-82
of the Administrative Code) within twenty-four
six months
after the director approves plans therefor
unless an
alternative schedule is approved by the director .
(6) Step six: The system shall complete
follow-up monitoring after installation of
treatment (in accordance with paragraphs (D)(2) of rule
3745-81-86
and (C) of rule
3745-81-87
of the Administrative Code) within thirty-six months
after the director approves optimal corrosion control treatment
plans.
(7) Step seven: The
director shall review the system's installation of treatment and specify
optimal water quality control parameters (in accordance with paragraph (F) of
rule
3745-81-82
of the Administrative Code) within six
months after completion of step six.
(8) Step eight: The system shall operate in
compliance with the director-specified optimal water quality control parameters
(in accordance with paragraph (G) of rule
3745-81-82
of the Administrative Code) and continue to conduct tap sampling (in accordance
with paragraphs (D)(3) of rule
3745-81-86
and (D) of rule
3745-81-87
of the Administrative Code).
(F)
New or updated
treatment recommendations, studies or plans.
(1)
The owner or
operator of a water system shall provide a new or update an existing corrosion
control treatment recommendation, study or submit plans in accordance with
paragraph (A) of this rule if any of the following occur:
(a)
The system
changes its water source or adds a new water source. The owner or operator
shall notify the director prior to changes to the water system source and
complete the recommendation, study or submit plans within eighteen
months.
(b)
The system makes a substantial change in water
treatment. The owner or operator shall notify the director prior to changes in
the water system treatment and complete the recommendation, study or submit
plans within eighteen months.
(c)
The system
operates out of previously-approved acceptable ranges for lead, copper, pH or
other corrosion control indicators, as determined by the director. The owner or
operator of the water system shall complete the recommendation, study or submit
plans within eighteen months after the system operates out of acceptable
ranges.
(d)
Any other event
determined by the director to have the potential to impact the water quality or
corrosiveness of water in the system. The owner or operator of the water system
shall complete the recommendation, study or submit plans within eighteen months
from the date the director provides written notice to the system of such
event.
(2)
An owner or operator of a system required to provide a
treatment recommendation, complete a corrosion control treatment study or
submit a plan in accordance with paragraph (F)(1) of this rule, shall notify
any consecutive or wholesale system of their new or updated treatment
recommendation, corrosion control treatment study or plan.
(3)
An owner or
operator of a system required to provide a treatment recommendation, complete a
corrosion control treatment study or submit a plan in accordance with paragraph
(F)(1) of this rule, shall complete the recommendation, study or submit the
plan to the director for approval even if sampling results conducted subsequent
to the initiation of the study and plan do not exceed the lead action
level.
(G)
The director may waive the requirement to conduct a new
or updated corrosion control recommendation, study or submit plans as required
in paragraph (F) of this rule upon demonstration by the system that items under
paragraphs (F)(1)(a) to (F)(1)(c) of this rule will not have the potential to
or will not impact the water quality or corrosiveness of the
system.
Notes
Promulgated Under: 119.03
Statutory Authority: 6109.121, 6109.04
Rule Amplifies: 6109.04, 6109.121
Prior Effective Dates: 04/01/96, 10/17/03, 07/24/09, 2/23/15
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