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| Do all polyethylene tanks meet NSF Standard 61 for potable water use? |
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| No. To meet NSF Standard 61, the tank manufacturer must have their products tested and approved by NSF as meeting or exceeding Standard 61 criteria. NSF Standard 61 states that tanks must not leach potential contaminants from the resins used in manufacturing the tank into the stored liquid, or that any leaching that does occur must not exceed acceptable public health levels. |
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| However, NSF Standard 61 is relatively new. Linear polyethylene tanks without NSF Standard 61 approval have been used to store potable water for years. The materials used in manufacturing these tanks comply with the U.S. Food and Drug Administration Regulation 117.1520. The criteria used in Regulation 117.1520 is very similar to that used in NSF Standard 61. Some states are now specifying that tanks must meet the actual NSF Standard 61 for potable water storage. Before purchasing a tank used for potable water storage, verify with your local regulatory agency which standard/regulation is accepted in your area. |
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| In addition, please note the following: |
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- Polyethylene tanks for potable water applications must be ordered in natural color (white) only.
- Crosslinked polyethylene tanks should NOT be used for food or potable water applications!
- Our USABlueBook polyethylene tanks from Snyder meet NSF Standard 61 compliance service.
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