How to Clean a Cistern
- 1). Put on all safety equipment before getting into the cistern. Mix ¼ cup of chlorine bleach with 10 gallons of water in a clean bucket.
- 2). Scrub the entire surface of the cistern using the scrub brush and handle. Keep the brush saturated by dipping it into the bucket of bleach and water. Be generous with the cleaning solution. Clean the grating thoroughly and rinse it off.
- 3). Open the drain on the cistern. Spray the cistern out completely using the garden hose until you no longer small chlorine bleach. Repeat this procedure to clean the cistern at least every five years.