An article in Mail On-line says that stagnant water is the perfect breeding ground for bacteria, including the legionella bug, so diseases can spread through everyday objects such as windscreen wash bottles, hand dryers, shower heads, sandpits and even religious communion cups. Ron Cutler from the SBCS says: “I would advise anyone to run their shower for 30 seconds before exposing themselves to any stagnant water… Uncovered sandpits are a real health hazard because of roaming cats defecating in them. Sandpits trap water and contain plenty of air and other matter which bacteria and other harmful parasites need to survive and multiply.”