You probably know that failing to maintain your septic tank could cost you thousands of dollars in repairs - just ask Jack and Greg from "Meet the Parents." But did you know that excess nitrogen, phosphorus and other toxins from leaky septic tanks can be washed into our waterways and oceans, where they can sicken and even kill fish, shellfish and other marine animals? Failing septic systems leach nitrogen into your backyard soil - and that nitrogen can reach groundwater or surface waters. When these nutrients reach larger bodies of water, they spawn unpleasant algal blooms that decompose and deplete the dissolved oxygen that aquatic animals need to survive. Some overgrowths of cyanobacteria - blue-green algae - can create toxins that are harmful to plants, animals and even humans if we ingest contaminated shellfish or swim in polluted waters.
Viewer Tip: Since faulty septic tanks can contribute nutrient pollution that reaches our waterways, it's important to keep them properly maintained. Following proper guidelines will help prevent expensive repairs and keep the environment clean. Here are some helpful tips for keeping your septic tank in check:
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(Sources: U.S. Environmental Protection Agency, “A Homeowner’s Guide to Septic Systems”; World Resources Institute, “Sources of Nutrient Pollution”; Chesapeake Bay Program Phase 4.3 Watershed Model; Image courtesy of EPA.)
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