Swimming pools contaminated with wastewater
There are two options for cleaning contaminated swimming pools.
Option 1
Empty, clean and re-fill the pool. Ensure emptied water is not directed to the stormwater system.
Option 2
- Remove all visible material with a scoop.
- Add a flocculant or clarifier, dispersing and mixing it over the entire pool.
- Turn the filter off for 8 hours, to allow for solid materials to settle to the bottom of the pool.
- Vacuum settled materials to waste (not via the filter).
- Backwash the filter.
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Super chlorinate the water at 10 milligrams per litre (maintained), for more than 24 hours, by adding:
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- more than 14grams of granular chlorine (75%) per 1000 litres of water.
- more than 80 milligrams of liquid chlorine (13%) per 1000 litres of water.
This should meet the minimum concentration and time value to super chlorinate an un-stabilised pool.
Stabilised pools should be circulated for more than 52 hours (at 10mg/lRoutinely check the concentration of chlorine throughout the super chlorination process and add the required dosage to maintain desired level.
- Check the pH level is 7.2 – 7.6, adjusting if necessary.
- Operate the filter for 24 hours.
- Backwash the filter.
- Ensure that the water is clear and chlorine level is between 1 to 5 milligrams per litre prior to pool use.
- Repeat the flocculation process if the water is still turbid (cloudy)