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
(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.
If the system exceeds the lead or
copper
(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: 6109.121, 6109.04
Prior Effective Dates: 04/01/1996, 10/17/2003, 07/24/2009, 02/23/2015, 05/01/2018
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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