Definition of Potable Water
Water that is suitable for human consumption, bathing, laundry, and personal hygiene.
Definition of Colilert/Colisure
Test used to detect total coliform and Ecoli in the potable water.
Definition of Total Coliform
Group of closely related mostly harmless bacteria that lives in soil, water, and the guts of animals.
What is E. Coli?
Type of fecal coliform bacteria commonly found in the testines of animals and humans.
What is NAVSEASYSCOM responsible for?
- The design, construction, and Maintenace of shipboard potable water systems.
- This includes treatment facilities and processes to ensure that safe drinking water is available at all times.
What is NAVFAC in charge of?
Promulgating instructions for ship-to shore potable water connections.
What is the MDR responsible for as it pertains to water testing?
- BACTI Testing
- Daily Halogen Testing
What are minimum usage requirements for water aboard ships?
50 Gallons per man per day
What are “Water Hours”?
No less than 2 gallons/man/day
* Occurs when troop carry ships are loaded beyond their water-producing capacity.
What are some instances that you would want to avoid making water?
- Harbors or from polluted seawater
- When ships are opearting in close formation
- When stripping or discharging waste or bilge water forward of the saltwater intakes.
What should type of water should not be filled in the potable water tanks unless it is neccessary for the survival of the ship?
Ballast tank water
What color should filling lines be?
Dark blue.
Potable water hoses are what color?
Dark Blue.
What color are the handles of the risers?
Dark Blue.
What the minium halogen residual from an approved source?
0.2 ppm
What the minimum halogen residual from an unapproved source?
2.0 ppm
When are halogen residual checks conducted?
- Daily
- In conjunction with bacterial analysis
- Prior to receipt of potable water
How often are bacteriological test conducted on potable water on the a ship?
Weekly
What number of samples do you need for a crew of 400 or less?
No less than 4 samples.
What is the number of samples for a ship with 400-800 personnel?
8 samples.
A Colilert of yellow indicates what?
Total coliform
A Colilert of flurescent indicates a postive presence of what?
Fecal Coliform (also known as e-coli).
Who maintains the potable water log and for how long?
The MDR and 2 years.
What does the potable water log contain?
- Time and date of each water sample
- Location of the ship
- Sampling site
- Source
- Halogen Residual
