The only mention of lawns in the article is this: > Water pollution is caused in large part by runoff from farms, urban lawns, and even septic tanks. When it r

The only mention of lawns in the article is this: > Water pollution is caused in large part by runoff from farms, urban lawns, and even septic tanks. When it rains, excess phosphorus, nitrogen, and other chemicals wash into lakes and rivers. That does not say that lawn run off out weights anything else. Did _you_ read the article?