Topics A to Z

As part of NEHA's continuos effort to provide convenient access to information and resources, we have gathered together for you the links in this section. Our mission is "to advance the environmental health and protection professional for the purpose of providing a healthful environment for all,” as well as to educate and inform those outside the profession.

Book: Essentials of Environmental Health (Second Edition)Essentials of Environmental Health (Second Edition) provides a clear and comprehensive study of the major topics in environmental health.

Environmental threats are occurring on a worldwide scale. Dramatic pictures showing the devastating effects of natural disasters lead the nightly news. Stories of oil spills, contaminated groundwater, deforestation, and depleted fisheries appear in the pages of newspapers daily.

National and international policymakers are concerned about the potential impact on the health of the world’s population and, as a result, much progress has been made in informing the public and introducing regulations with the hopes of containing these hazards.

Robert H. Friis
Additional Topics A to Z: General Environmental Health

January 2010: a 7.0 earthquake hit Haiti, destroying its capital of Port-au-Prince, killing over 200,000 people. The recovery is ongoing. Tent camps were dismantled as citizens went back to some kind of home. But nearly 150,000 people still live in the shanty structures erected post disaster. Basic sanitation is a daily struggle. This talk will address the tragic reintroduction of cholera, share the ad hoc approaches to sanitation in Haiti, and the role EH professionals MUST play in disaster situations.


Presented at NEHA 2015 AEC

July 2015
Additional Topics A to Z: Wastewater

Article Abstract

The objectives for the study described in this article were to evaluate the fate and transport of onsite wastewater system (OWS)–derived phosphate from a residential system in Beaufort County, North Carolina, and to determine if current OWS setback regulations are sufficient to prevent elevated phosphate discharge to surface waters. Piezometers were installed in nests at different depths adjacent to drainfield trenches and up- and down-gradient of a residential OWS. Groundwater and septic effluent phosphate concentrations, temperature, pH, dissolved oxygen, and electrical conductivity were monitored every two months from February 2011 to October 2011 (five times). The mean groundwater phosphate concentration beneath the OWS (3.05 ± 0.74 mg/L) was not significantly different than septic effluent (2.97 ± 0.76 mg/L) and was elevated relative to background groundwater (0.14 ± 0.12 mg/L). Groundwater phosphate concentrations were inversely related (r2 = .83) to distance from the system. Onsite system setback regulations may have to be increased (>30 m) in some areas to ensure groundwater phosphate concentrations are reduced to background concentrations before discharge to surface waters. 

Jan/Feb 2014
76.6 | 28-33
Charles Humphrey, MS, PhD, REHS, Mike O’Driscoll, MS, PhD, Nancy Deal, MS, REHS, David Lindbo, MS, PhD
Additional Topics A to Z: Wastewater