This rule applies to all public water
systems, including consecutive water systems.
(A)
tier 1 public
notification.
(1)
A public water system shall issue Tier 1 public
notification in accordance with rule
3745-81-32 of
the Administrative Code when any of the following occur:
(a)
A microcystins
action level established paragraph (A)(1) or (A)(2) in rule
3745-90-02
of the Administrative Code is exceeded in a repeat sample collected at the
finished water sampling point in accordance with rule
3745-90-03
of the Administrative Code, unless the director agrees in writing that the
timeline for notification may be extended or public notification is not
necessary, based on extenuating circumstances, until additional results are
received.
(b)
If required by the director based on the results of
resamples, distribution system samples or daily samples collected in accordance
with paragraph (A)(4), (B) or (C)(2) of rule
3745-90-03
of the Administrative Code.
(c)
Failure to
conduct resampling or repeat sampling in accordance with paragraph (A)(4)(a),
(A)(4)(b), (C)(2)(a) or (C)(2)(b) of rule
3745-90-03
of the Administrative Code, unless the director agrees in writing that the
timeline for notification may be extended or public notification is not
necessary.
(2)
The public notification shall include applicable
content in accordance with paragraph (E) of rule
3745-81-32 of
the Administrative Code, the action level exceeded and the standard health
effects language in paragraph (C) of this rule.
(3)
The director may
allow the system to limit distribution of the public notice in accordance with
paragraph (A)(2) of rule
3745-81-32 of
the Administrative Code.
(4)
Unless otherwise specified by the director based on
public health and safety considerations, tier 1 public notification shall
remain in effect until the following occur:
(a)
Microcystins
concentrations are below the action level in two consecutive samples collected
a minimum of twenty-four hours apart at the finished water sampling
point.
(b)
Microcystins concentrations are below the action level
in one set of samples collected at the distribution sampling
points.
(B)
Consumer
confidence report.
Each community public water system
which exceeds a microcystins action level established in paragraph (A)(1) or
(A)(2) of rule
3745-90-02
of the Administrative Code in a sample collected at a finished water sampling
point in a daily, resample or repeat sample, or a distribution sampling point
collected within their own community water system in accordance with rule
3745-90-03
of the Administrative Code shall include the following in the consumer
confidence report required by Chapter 3745-96 of the Administrative
Code:
(1)
The microcystins action level.
(2)
The range of
levels detected and highest single measurement of microcystins concentration in
samples collected at finished water sampling points and distribution sampling
points.
(3)
Information regarding the major source of the
contaminant: "Produced by some naturally occurring cyanobacteria, also known as
blue-green algae, which under certain conditions (i.e., high nutrient
concentration and high light intensity) may produce
microcystins."
(4)
Standard health effects language in paragraph (C) of
this rule.
(C)
Standard health effects language.
The following standard health effects
language shall be used in public notification and consumer confidence reports:
"Consuming water containing concentrations of microcystins over the action
level may result in abnormal liver function, diarrhea, vomiting, nausea,
numbness or dizziness. Children younger than school age, pregnant women,
nursing mothers, the elderly, immune-compromised individuals, those with
pre-existing liver conditions and those receiving dialysis treatment may be
more susceptible than the general population to the health effects of
microcystins."
Notes
Ohio Admin. Code
3745-90-06
Effective:
6/1/2016
Five Year Review (FYR) Dates:
06/01/2021
Promulgated
Under: 119.03
Statutory
Authority: 3745.50,
6109.04
Rule
Amplifies: 3745.50,
6109.04
