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Group A Transient Non-Community
Water Systems
Information on this page is geared to
the specific needs of transient non-community (TNC) water system
owners and operators to make their jobs easier and help them comply
with federal and state requirements.
Transient non-community water systems
provide drinking water to a population that changes day to day. They
include, among others, campgrounds, hotels, rest areas, and
restaurants with their own water supplies.
Group A Transient Non-Community water systems are regulated under
Chapter 246-290 of the Washington Administrative Code.
TNC water
systems serve:
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Twenty-five or more different people each day
for sixty or more days within a calendar year;
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Twenty-five or more of the same people each day
for sixty or more days, but less than one hundred eighty days
within a calendar year; or
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One thousand or more people for two or more
consecutive days within a calendar year.
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TNC Water System
Information on-line:
Sentry Internet Database
contains all water system information.
You can review & download:
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Your Water Facility Inventory (WFI)
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Water Quality Data |
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Coliform Public Health Advisory Packet
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Coliform Public Health Advisory Packet: Tools to help you
respond to the presence of fecal contamination in your water
supply. If you have fecal contamination in your system, the
Department of Health will work closely with you to help resolve
the situation and determine if a public health advisory is
required.
Coliform Information Packet
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The materials in the
Coliform Packet were
created to help you better understand total coliform bacteria.
The packet contains information about what coliform is, how to
test for it, and what to do if you find it in your water system.
Nitrate Public Health Advisory Packet
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Nitrate Public Health Advisory Packet: Materials in this
packet are designed to help you respond during times of high
nitrate levels in your water supply. If you have nitrate
contamination in your system, you will be working closely with
the Department of Health to resolve the situation and make sure
your customers are adequately notified.
Seasonal Start-Up and Shut-down Procedures
Start-up
and Shut-down Assistance for Seasonal Non-Community Water Systems
This binder of information will assist you with the operation of
seasonal non-community water systems. The binder is intended to be
both a source of information and a place to store water system
records.
Water Tap articles: (PDF format)
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