Disinfection · Part No. C21044
BWI Chlorine Pellets
NSF/ANSI 60 certified 1-gram calcium-hypochlorite pellets used to sanitize wells, pumps, and storage tanks — and as replacement pellets for the Sentry I Dry Pellet Chlorinator.
Overview
Sanitize wells, pumps & storage tanks
BWI Chlorine is a 1-gram calcium-hypochlorite pellet used to disinfect and sanitize private wells, pumps, and storage tanks. The pellets dissolve to release chlorine for sanitizing and shock-treatment applications.
They also serve as replacement pellets for the Sentry I Dry Pellet Chlorinator, supporting consistent dosing in dealer-installed treatment systems.
Always read and follow the label and included instructions. Calcium hypochlorite is an oxidizer — store and handle accordingly.

At a glance
Product details
A simple, certified consumable for well-water sanitizing — whether you maintain your own well or service a Sentry I system.
Specifications
Key details
- Part No. C21044
- 1-gram calcium-hypochlorite pellets
- NSF/ANSI 60 certified
- Sanitizes wells, pumps & storage tanks
- Replacement pellets for the Sentry I Dry Pellet Chlorinator
- Made by Better Water Industries, USA
Where to buy
Buy BWI Chlorine Pellets
Related
Related products

Sentry I Dry Pellet Chlorinator
This product shines when your well water doesn’t. Commonly used for iron bacteria, light iron, and light rotten-egg odor, it provides the first stage of a well-water treatment system.
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Well Safe®
Well-sanitizing products for routine and post-service treatment.
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