What Type of Water Is Safe for Filling a Commercial Swimming Pool?


Water from your Municipality’s potable water delivery system and well water can be acceptable sources for filling your pool and topping up from evaporation and splash out water loss. Whatever your source of water, it is important that you ensure it does not contain heavy metals such as iron, copper, or manganese. These metals can cause discoloration of the membrane. If your water has a high concentration of calcium (hard water), you should take appropriate measures to reduce lime and calcium to acceptable levels, avoiding damage to the surface of the membrane.

Recommendation: depending on your region, source water can vary from season to season. Having your water tested for the presence of heavy metals twice a year will help identify any seasonal changes.

Water used to fill or top up a commercial swimming pool should be free from heavy metals such as iron, copper, and manganese, which can discolor the pool membrane and cause long-term staining.

Poolside by CGT emphasizes proper source water evaluation to prevent long-term staining and membrane damage.