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TNC Water System
Information on-line:
Sentry Internet Database
contains all water system information. You can review
and download:
Posters
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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:
Twenty-five or more different people each day
for sixty or more days within a calendar year;
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
One thousand or more people for two or more consecutive days
within a calendar year.
Monitoring Requirements
Monitoring requirements vary for TNC
water systems depending on the system's characteristics. You can
find your monitoring requirements for your particular system on-line
in our water system Sentry Internet database.
View or download your system's WFI. Look on page 2 of your WFI in
sections 33. and 34. for your system's monitoring schedule for Coliform and
Nitrates.
Example
Only:
Box 33. contains
an example system's monitoring schedule for Coliform
and box 34. shows an example Nitrate schedule for each
active source. Download your most recent
WFI from Sentry Internet database
to see your requirements.
How to collect and submit Coliform and Nitrate samples to a
certified laboratory:
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)
For More Information
If you need more information, contact
your Regional Office. The Regional
Office Map outlines counties in each region.
Northwest Regional Office - Kent
Main Office: 253-395-6750Southwest Regional Office
- Olympia
Main Office: 360-236-3030
Eastern Regional Office - Spokane
Main Office: 509-329-2100 |
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