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Technical
Bulletin |
#8-C |
Re-Filling Water Storage
Containers Safely
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The following is a guideline for safely re-filling water storage containers after
a period of storage (or if the cleanliness of a container is unknown or questionable).
These guidelines apply only to containers recommended for water storage. For container
guidelines, see 7C's Bulletin No. 7, choosing a Water Storage Container.
INSPECT THE CONTAINER: Empty old water from the drum,
WaterCube™ or other container and inspect for contamination.
- Using a flashlight if necessary, visually inspect inside of
the container and check for any sign of algae, residues or discoloration.
- Feel the inside surface with your finger and check for any
slime on the inside surface.
INSPECT AND/OR REPLACE THE
CLOSURES:
DRUMS: Inspect all bungs, caps and
gaskets and ensure they are in good condition. Look for worn, cut, deformed or brittle
gaskets and replace them before reusing the container.
WATERCUBES: Do not reuse tamper-evident caps. Tamper-evident caps are designed
for one use only and must be replaced. (Note: tamper-evident cap liners are printed
"sealed for your protection" and will stick to the container opening when cap is
removed.)
- Carefully remove all remains of any old tamper seal from the opening of the
WaterCube™. If necessary, try scraping with the edge of a plastic credit card. Do not
cut or damage the sealing surface around the opening.
- Discard old cap and purchase new standard or tamper-seal caps from your WaterCube
dealer. Standard (non-tamper) WaterCube™ caps may be re-used if inspected and found
in good condition. Replacement of standard caps is recommended after 5 years.
DISINFECT THE CONTAINER: Disinfection is recommended when
re-filling any container after storage, or if the cleanliness of a new container is not
known. If any of the conditions in item 1. above are present, the container must be
disinfected in the following manner:
- Prepare a solution of 1/2 cup of plain liquid household bleach to each 1 gallon of
water. Pour a quantity of the solution into the container. (Use approx. 1/2 cup or more of
the solution per gallon of container volume. For example: use about 1 gallon of solution
in a 55-gal. drum, or approx. 1 cup in a 2.5 Gal. WaterCube™).
- Replace all bung plugs and caps tightly, and then rotate container in all directions to
wet all inside surfaces. Let stand for 30 minutes or more.
- Empty container and rinse thoroughly 2-3 times with clean water.
- Re-inspect the container. Repeat steps (a), (b) and (c) above, if any residues remain.
RE-FILL: Follow the entire standard filling procedure, precautions, and
container specification guidelines included in the Water Preserver™ package.
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