Many lakes around the country - and the communities that rely on them for recreation and economic benefit - have begun to watch more closely what chemicals enter the water. Ammonia and phosphorus are just two of the chemicals causing concerns - but it’s one that is found in many everyday household cleaners. They can often be found in dish soap, laundry detergent and common multi-purpose cleaners. If too much phosphorus or ammonia enter a lake, it can cause health concerns for both humans and aquatic life. Both substances can increase nutrient pollution, which could lead to algae blooms and the depletion of oxygen in the water. Other chemicals and cleaning agents can be toxic and directly harm aquatic organisms or people who use a lake or river as a source for recreation activities. Some other chemicals to avoid include bleach, chlorine bleach, triclosan, petroleum solvents and phthalates. Always read product descriptions to check for these potentially harmful ingredients. When deciding what types of cleaners to use, check to be certain the product you use does not contain phosphorus - or any other chemical that may be banned by officials overseeing the waterbody. Find and use a biodegradable, phosphate-free cleaner with a neutral pH to clean your dock. Again, a good source for recommended safe products can be found at the EPA website.