Bacteria can contaminate shellfish and make them unsuitable for human consumption. Prohibiting boat sewage discharges in NDAs can reduce the risk of human illness from inadequately treated sewage. Excessive nitrogen can be a problem in poorly flushed embayments because it stimulates harmful algal growth and contributes to reductions in dissolved oxygen. Both of these conditions can decrease the survivorship and reproductive potential of marine life. Prohibiting MSD discharges in NDAs helps to reduce nitrogen inputs to sensitive waters.
Chemical products can be toxic to marine and estuarine life.
Using non-toxic deodorizers and pumping out wastes at designated facilities helps to keep toxic chemicals out of coastal systems. Complying with vessel sewage discharge regulations, and using pumpout facilities , are necessary steps toward protecting public health, water quality, and the marine environment. No Discharge Areas in New England .