1.   Both cities have large numbers of maquiladora assembly plants that regularly send large amounts of untreated toxic wastes into rivers that flow into California.

2.   Factories feed the sea a buffet of nickel, cadmium, sulfur and untreated human waste.

3.   In those years, cities and towns routinely discharged untreated human waste into the river, converting it into a putrid sewer.

4.   The streets flood during heavy rains and the houses drain untreated waste into Hook Creek.

5.   The untreated wastes were dumped into natural drainage areas and carried away from more densely populated areas.

6.   Today, not a single city in the United States deposits untreated waste directly into urban waterways, and most American harbors are dramatically cleaner than in decades past.

7.   Township enterprises on the Jiangsu side of the lake, on the other hand, cheerfully dump untreated waste into the water.

8.   Worn-out sewage treatment plants at Yellowstone dump untreated waste into nearby streams and lakes.

9.   In developing countries, groundwater contamination by untreated wastes, diffuse pollution and leaking sewage systems has resulted in fatalities.

10.   The dumping of untreated waste by several industries and local authorities.