Agat Sewage Treatment Plant: Impact of secondary treated effluent on Guam coastal waters
Tsuda RT and Grosenbaugh DA. 1977. Agat Sewage Treatment Plant: Impact of secondary treated effluent on Guam coastal waters. Water Resources Research Center Technical Report 3. University of Guam. Mangilao, Guam
The purpose of the study was to obtain long-term information on the impact of a secondarily treated sewage effluent on Guam coastal waters. Water samples were analyzed from the effluent in the treatment tank as well as from the receiving marine waters. The marine biota, especially the benthic algae and zooplankton, were quantified in the vicinity of the outfall. The results of the study in the treatment plant reveal that nutrient levels are high. The effluent discharged from the outfall pipe rises immediately to the surface. In the absence of significant swells and wind velocity, the effluent moves on the surface in sluggish eddies, eventually drifting offshore. The additional nutrient input from the sewage to the marine environment has little effect on the benthic biota, since the nutrients are carried immediately to the surface.
- Type
- Published Report
- Authors
- Tsuda, Roy; Grosenbaugh, Deborah
- Date of Issue
- 1977-10
- Publisher
- University of Guam
- Units
- WAPA
- Keywords
- Agat Guam, Benthic algae, Coastal Regions, Coliform, Ecology, Marine Pollution, phosphates, Sewage, Zooplankton