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Instructions for Combination
Disinfection/
Unresolved
Total Coliform Notice
This template is applicable to systems required to take less
than 40 samples per month. See below for language applicable to systems
taking 40 or more samples. Since exceeding the total coliform bacteria
maximum contaminant level is a Tier 2 violation, you must provide public notice
to all persons served as soon as possible but within 30 days after you learn of
the violation.
Community systems must use one of the following methods:
In addition, systems must use another method reasonably
calculated to reach others if they would not be reached by the first method.
Such methods could include newspapers, e-mail, or delivery to community
organizations.
The enclosed notice is appropriate for hand delivery or mail.
However, you may wish to shorten it before using it for posting. If you
modify the notice, you must leave the health effects language in italics
unchanged. This language is mandatory.
Description of the Violation
Use the following language if you are required to take 40 or more samples per
month:
We routinely monitor for the presence of drinking water contaminants. We
took (number) samples the month of (month). During (month), _______
percent of our samples showed the presence of total coliform bacteria. The
standard is that no more than 5 percent of samples may do so.
Corrective Action
In your notice, describe corrective actions you are taking. If you know
what is causing the coliform problem, explain. Listed below are some steps
commonly taken by water systems with total coliform violations. Use the
following language, if appropriate, or develop your own:
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We are chlorinating and flushing the water system.
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We are increasing sampling for coliform bacteria.
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We are repairing the wellhead seal.
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We are repairing the storage tank.
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We will inform you when additional samples show no coliform
bacteria.
Make sure to send a copy of the notice, along with the enclosed
"Certification of Delivery of Public Notice", to the Minnesota Department of
Health within ten (10) days of posting the public notice. It is a good
idea to inform your consumers when the violation has been resolved.
Source: Minnesota Department of Health
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