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Government institution · Accra · Ghana

Environmental Protection Agency

In research, Environmental Protection Agency stands highest in Physical Sciences (#7,767 of 12,888 worldwide) and Environmental Science (#2,611 of 3,551 worldwide), 2022–2025. Relative to its size it is most specialised in Environmental Science — Environmental Science is 11.1× its share of world research.

epa.gov.gh/epaROR OpenAlex
World rank, 2022–2025
#13,798
of 28,054 · #12,571 all time
Rank in Ghana
#32
of 50
Research works
935
▲ 30% vs 2013–17
Citations
25k
26.6 per fractional work
Top-10% rate
18.7%
record average 16.5%
Open access
34%
world 28%

What is Environmental Protection Agency known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #7,767 of 12,888 17.3%96 #8666
Environmental ScienceField #2,611 of 3,551 17.5%72 #1948

Each strip is that field’s whole ranked pool, with the notch where Environmental Protection Agency sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does Environmental Protection Agency specialise in?

Where its research is concentrated relative to its size: Environmental Science takes 11.1× the share of its output that it takes of world research.

  1. Environmental ScienceField · 72.3 works11×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 1.06× its world share, 7 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.71× its world share, 5 worksBiochemistry, Geneti…Immunology and Microbiology: 0.17× its world share, 0 worksImmunology and Micro…Neuroscience: 0.12× its world share, 0 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.72× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 0.79× its world share, 0 worksChemical EngineeringChemistry: 0.81× its world share, 2 worksChemistryComputer Science: 0.17× its world share, 2 worksComputer ScienceEarth and Planetary Sciences: 4.45× its world share, 9 worksEarth and Planetary …Energy: 0.90× its world share, 1 worksEnergyEngineering: 0.41× its world share, 8 worksEngineeringEnvironmental Science: 11.14× its world share, 72 worksEnvironmental ScienceMaterials Science: 0.21× its world share, 1 worksMaterials ScienceMathematics: 0.26× its world share, 0 worksMathematicsDentistry: 0.05× its world share, 0 worksDentistryHealth Professions: 0.68× its world share, 2 worksHealth ProfessionsMedicine: 0.28× its world share, 7 worksMedicineNursing: 1.17× its world share, 1 worksNursingVeterinary: 3.27× its world share, 1 worksVeterinaryArts and Humanities: 0.09× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 0.26× its world share, 1 worksBusiness, Management…Decision Sciences: 0.68× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 0.86× its world share, 2 worksEconomics, Econometr…Psychology: 0.14× its world share, 1 worksPsychologySocial Sciences: 0.41× its world share, 7 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Environmental Science, 11.1×. Every wedge is a field page.

Who are the top researchers at Environmental Protection Agency?

Ranked on the composite score, D. F. Stewart and H. Valk lead among researchers whose main affiliation is Environmental Protection Agency.

  1. 1 D. F. Stewart Ghana · #974,647 worldwide 19 citations · 20 works
  2. 2 H. Valk Ghana · #1,185,673 worldwide 25 citations · 15 works
All ranked researchers at Environmental Protection Agency

Which keywords describe research at Environmental Protection Agency?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Climate Change, Health Effects, Water Quality, Environmental Impact, Eutrophication, Toxicity, Global Warming and Environmental Exposure.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Climate Change23▲ 6.5×47 topics
  2. Health Effects12▲ 15×17 topics
  3. Water Quality11▲ 22×12 topics
  4. Environmental Impact10▲ 4.3×32 topics
  5. Sustainability7▲ 2.1×25 topics
  6. Eutrophication6▲ 47×4 topics
  7. Toxicity6▲ 11×10 topics
  8. Global Warming6▲ 11×10 topics
  9. Oxidative Stress6▲ 2.6×10 topics
  10. Environmental Exposure6▲ 40×3 topics
  11. Global Distribution5▲ 64×2 topics
  12. Renewable Energy5▲ 2.7×17 topics
  13. Wastewater Treatment5▲ 17×7 topics
  14. Public Health5▲ 2.6×12 topics
  15. Bioaccumulation4▲ 38×3 topics
  16. Land Use Change4▲ 11×4 topics
  17. Harmful Algal Blooms4▲ 39×2 topics
  18. Invasive Species4▲ 6.9×7 topics
  19. Mortality4▲ 4.8×2 topics
  20. Microbial Ecology4▲ 16×2 topics
  21. Environmental Monitoring3▲ 6.9×9 topics
  22. Particulate Matter3▲ 17×2 topics
  23. Global Burden of Disease3▲ 10×4 topics
  24. Sediment Transport3▲ 15×4 topics
  25. Hydrological Modeling3▲ 10×4 topics
  26. Exposure Pathways3▲ 57×2 topics
  27. Pollution3▲ 12×3 topics
  28. Polycyclic Aromatic Hydrocarbons3▲ 43×2 topics
  29. Environmental Impacts3▲ 7.9×5 topics
  30. Water Resources3▲ 8.8×4 topics
  31. Air Pollution3▲ 16×3 topics
  32. Perfluoroalkyl Substances3▲ 118×1 topic
  33. Polyfluoroalkyl Compounds3▲ 118×1 topic
  34. Water Treatment3▲ 17×3 topics
  35. Aryl Hydrocarbon Receptor3▲ 56×1 topic
  36. Brominated Flame Retardants3▲ 56×1 topic
  37. Carcinogenicity3▲ 22×3 topics
  38. Fisheries Sustainability3▲ 23×2 topics
  39. Genotoxicity3▲ 46×2 topics
  40. Freshwater Biodiversity2▲ 32×2 topics

Which research topics does Environmental Protection Agency publish most on?

By volume in 2022–2025: Per- and polyfluoroalkyl substances research, Toxic Organic Pollutants Impact, Water Treatment and Disinfection and Air Quality and Health Impacts.

Per- and polyfluoroalkyl…3Per- and polyfluoroalkyl substances research: 3 fractional worksToxic Organic Pollutants…3Toxic Organic Pollutants Impact: 3 fractional worksWater Treatment and Disinfection: 2 fractional worksAir Quality and Health I…2Air Quality and Health Impacts: 2 fractional worksSoil and Water Nutrient …2Soil and Water Nutrient Dynamics: 2 fractional worksMarine and coastal ecosystems: 2 fractional worksHydrology and Watershed Management Studies: 2 fractional worksHeavy metals in environm…2Heavy metals in environment: 2 fractional worksAquatic Ecosystems and Phytoplankton Dynamics: 2 fractional worksUrban Stormwater Management Solutions: 2 fractional works
Environmental ChemistryHealth, Toxicology and MutagenesisOceanographyWater Science and Technology2 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Per- and polyfluoroalkyl substances research Environmental Chemistry 3 works
  2. 2 Toxic Organic Pollutants Impact Health, Toxicology and Mutagenesis 3 works
  3. 3 Water Treatment and Disinfection Health, Toxicology and Mutagenesis 2 works
  4. 4 Air Quality and Health Impacts Health, Toxicology and Mutagenesis 2 works
  5. 5 Soil and Water Nutrient Dynamics Environmental Chemistry 2 works
  6. 6 Marine and coastal ecosystems Oceanography 2 works
  7. 7 Hydrology and Watershed Management Studies Water Science and Technology 2 works
  8. 8 Heavy metals in environment Pollution 2 works
  9. 9 Aquatic Ecosystems and Phytoplankton Dynamics Environmental Chemistry 2 works
  10. 10 Urban Stormwater Management Solutions Environmental Engineering 2 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available34.2%not open65.8%

World: 28% of research is openly available.

with international co-authors77.8%domestic only22.2%

World: 19% is written across borders.

How has Environmental Protection Agency's research output changed?

Output in 2018–2022 was 30% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Accra

All research institutions in Accra

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.