C P Humphrey

Summary

Affiliation: East Carolina University
Country: USA

Publications

  1. ncbi request reprint Phosphate treatment by onsite wastewater systems in nutrient-sensitive watersheds of North Carolina's Piedmont
    Charles Humphrey
    East Carolina University, Greenville, NC, USA E mail
    Water Sci Technol 74:1527-1538. 2016
  2. doi request reprint Groundwater and stream E. coli concentrations in coastal plain watersheds served by onsite wastewater and a municipal sewer treatment system
    Charles Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Building, Greenville, NC 27858, USA E mail
    Water Sci Technol 72:1851-60. 2015
  3. doi request reprint Evaluation of on-site wastewater system Escherichia coli contributions to shallow groundwater in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Bldg, Greenville, NC 27858 4353, USA
    Water Sci Technol 63:789-95. 2011
  4. pmc Onsite wastewater system nitrogen contributions to groundwater in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, USA
    J Environ Health 76:16-22. 2013
  5. doi request reprint Controls on groundwater nitrogen contributions from on-site wastewater systems in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Bldg, Greenville, NC 27858 4353, USA
    Water Sci Technol 62:1448-55. 2010

Detail Information

Publications5

  1. ncbi request reprint Phosphate treatment by onsite wastewater systems in nutrient-sensitive watersheds of North Carolina's Piedmont
    Charles Humphrey
    East Carolina University, Greenville, NC, USA E mail
    Water Sci Technol 74:1527-1538. 2016
    ..This research provides important information that is absent from the published literature concerning PO4-P contributions to water resources from OWS in clay soils...
  2. doi request reprint Groundwater and stream E. coli concentrations in coastal plain watersheds served by onsite wastewater and a municipal sewer treatment system
    Charles Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Building, Greenville, NC 27858, USA E mail
    Water Sci Technol 72:1851-60. 2015
    ..coli concentrations were higher for the OWS in relation to MWS watersheds on each sampling date. Water quality could be improved by ensuring OWS are installed and operated to maintain adequate separation distances to water resources. ..
  3. doi request reprint Evaluation of on-site wastewater system Escherichia coli contributions to shallow groundwater in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Bldg, Greenville, NC 27858 4353, USA
    Water Sci Technol 63:789-95. 2011
    ..The results indicate that increasing the required vertical separation distance from drainfield trenches to seasonal high water table could improve shallow groundwater quality...
  4. pmc Onsite wastewater system nitrogen contributions to groundwater in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, USA
    J Environ Health 76:16-22. 2013
    ..This was a pioneering effort to better understand the link of onsite systems, the fate of nitrogen in the environment, and public health...
  5. doi request reprint Controls on groundwater nitrogen contributions from on-site wastewater systems in coastal North Carolina
    C P Humphrey
    Environmental Health Sciences Program, East Carolina University, 3408 Carol Belk Bldg, Greenville, NC 27858 4353, USA
    Water Sci Technol 62:1448-55. 2010
    ..5 mg/L higher. On-site systems in group I and II soils are prone to groundwater nitrogen loading with separation distance often controlling the nitrogen speciation in groundwater near on-site systems...