11.   They also documented dysfunctional sewage treatment plants that illegally discharge millions of gallons of partially treated sewage into the Chattahoochee during rainstorms.

12.   And some U.S. border communities get their share of negative environmental impact from Mexico, in the form of poorly treated sewage spilling into border watersheds.

13.   And perhaps most importantly, the standards control the discharge of treated sewage and wastewater from showers, sinks and kitchen galleys.

14.   As a result, Congress passed a law prohibiting cruise ships from discharging treated sewage within a mile of any Alaskan port.

15.   Environmentalists are urging the United Arab Emirates and other countries in the arid Arabian peninsula to boost recycling treated sewage to increase scarce water supplies.