Published online by Cambridge University Press: 06 January 2010
abstract The quality of the Hudson River estuary has been negatively impacted for many years by the discharge of untreated sewage. The abatement of these discharges due to construction and upgrading of wastewater treatment plants (WTP) in the Hudson valley from the 1930s to the 1990s has significantly reduced loadings of suspended solids, oxygen demanding organics, floatables, and pathogens, with lesser reductions observed for nitrogen and phosphorus. In response, water quality conditions have improved significantly. Dissolved oxygen has increased from critically low levels to summer averages that exceed 5 mg l−1 and pollution sensitive insects and marine borers have returned to the estuary. Sanitary quality has also improved with most of the Hudson today considered to meet swimmable water quality standards. Consequently, shellfish beds and bathing beaches have been reopened in New York/New Jersey Harbor and additional beaches are being considered throughout the river. Priorities for the future include: increased capital and operations and maintenance investments for WTPs, improved capture and treatment of combined sewer overflows (CSO), and investigation of the need for nutrient removal.
Introduction
The Hudson River south of the Federal dam at Troy comprises an approximately 240 km long estuarine system that has been subjected to an enormous loading of pollutants from a variety of sources for over three hundred years. Until relatively recently, this loading included the discharge of millions of liters of untreated sewage per day.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.