pollution from lawns, pet waste, and vehicle exhaust washes into nearby waterways. This sewage (sometimes treated, sometimes not) is often discharged into nearby bodies of water... receive high concentrations of urban waste that are high in nitrogen, phosphorus and other organic matter. Compounding the problem, municipal sewage is entering Bedford Basin from... from nearby towns, and waste from both a paper mill and nearby industrial park. Recent reports indicate the system is highly eutrophic and already many shellfish species have been...

fertilizers run off agricultural fields and leach into groundwater, and animal waste from concentrated livestock operations and fish farms (aquaculture) also find their way into water... practices in the area. In developing countries, basic sewage treatment and improved governance can help immensely. Point sources (pipes and waste outlets) are typically the most...