EHPLE Environmental Health key terms

The branch of public health concerned with how physical, chemical, biological, and social factors in the surroundings affect human health, and with preventing or controlling those exposures.

The process of deciding how land, infrastructure, and resources will be used and developed so that environmental quality and community health are protected over time.

A structured procedure that predicts the potential health effects of a proposed policy, plan, or project before decisions are made, and recommends ways to reduce harms and enhance benefits.

A formal decision-support process that identifies, predicts, and evaluates the likely environmental consequences of a proposed project, and sets out mitigation before approval is granted.

The range of personal, social, economic, and environmental conditions that together influence a population's health status, including housing, income, air quality, and access to services.

Conditions of birth, growth, living, working, and ageing, plus the wider systems shaping daily life, that explain avoidable differences in health between population groups.

The principle that no population group should bear a disproportionate share of environmental hazards or be excluded from decisions about environmental conditions affecting them.

A decision rule holding that where serious or irreversible harm is plausible but scientific evidence remains uncertain, protective action should not be postponed pending further research.

Meeting present needs without compromising the ability of future generations to meet theirs, balancing environmental integrity, economic viability, and social equity in long-term planning decisions.

The maximum population or level of activity an area can support indefinitely without degrading the natural systems, infrastructure, or services on which that population depends.

The deliberate allocation of land to housing, industry, transport, agriculture, and open space, used to separate incompatible uses and shape population exposure patterns.

A legal instrument that divides land into districts and specifies permitted uses and densities, thereby influencing where people live relative to pollution sources and amenities.

A designated strip of land separating a hazard source from sensitive receptors such as homes or schools, intended to reduce exposure through distance and sometimes vegetation.

Locations or population groups, such as children, the elderly, hospitals, and schools, that are more vulnerable to environmental insult and therefore weigh heavily in siting decisions.

Groups at elevated risk of harm from environmental exposures because of age, pre-existing illness, pregnancy, low income, occupation, or limited access to healthcare and information.

The combined effects on health or the environment of multiple exposures, sources, or projects acting together over time and space, including past, present, and reasonably foreseeable actions.

The measurement or estimation of how much of an agent reaches a person, by which route, and for how long, forming the bridge between emission sources and health risk estimates.

The first step of risk assessment, determining whether an agent has the intrinsic capacity to cause adverse effects in humans or ecosystems based on toxicological and epidemiological evidence.

The quantitative association between the amount of an agent received and the magnitude or probability of the resulting adverse effect in an exposed population.

The systematic scientific process of identifying hazards, characterising dose-response, estimating exposure, and combining these to describe the likelihood and severity of harm.

The decision-making and policy stage that weighs risk assessment findings against costs, benefits, and public values to select and implement control measures.

The interactive exchange of information about hazards, risks, and control options among experts, decision-makers, and affected communities, aimed at informed understanding rather than persuasion alone.

How lay people judge the seriousness and acceptability of a hazard, shaped by factors such as voluntariness, dread, familiarity, and trust in the institutions managing it.

An estimate of a daily oral exposure to a substance that is likely to be without appreciable risk of adverse effects over a lifetime, derived by dividing a no-effect level by uncertainty factors.

Numerical divisors applied to experimental toxicity data to account for animal-to-human extrapolation, inter-individual variability, and gaps in the study database when deriving safe exposure levels.

The measurement of a chemical or its metabolite in human tissues or fluids, such as blood or urine, to estimate total internal dose from all exposure routes combined.

A measurable indicator in biological samples reflecting exposure, early biological effect, or individual susceptibility, used to link environmental contact with health outcomes.

An individual's or group's heightened responsiveness to an exposure because of genetic traits, nutritional status, age, disease, or prior exposure history.

A standardised scale that converts monitored pollutant concentrations into simple categories and health messages so the public can adjust behaviour on polluted days.

Airborne solid and liquid particles classified by size, with fine and ultrafine fractions penetrating deep into the lung and linked to cardiovascular and respiratory disease.

The systems and facilities for safe management of human excreta, wastewater, and associated hygiene, fundamental to preventing faecal-oral disease transmission in communities.

Regulatory limits or narrative criteria specifying permissible concentrations of contaminants in drinking water or receiving waters, set to protect designated uses and human health.

The highest concentration of a contaminant legally permitted in drinking water supplied to the public, set as close to health-based goals as treatment technology and cost allow.

Measures that reduce populations of organisms transmitting disease, such as mosquitoes or rodents, through habitat modification, biological agents, or targeted pesticide use.

A tiered strategy combining biological, cultural, physical, and chemical controls, applying pesticides only when monitoring shows they are needed, to limit resistance and exposure.

Traces of a pest-control substance or its breakdown products remaining on food, water, or surfaces after application, regulated through tolerance limits and monitoring programmes.

The planned sequence of collection, transport, recycling, treatment, and disposal of discarded materials, designed to protect health and limit soil, water, and air contamination.

An engineered disposal site with a liner, leachate collection, and gas control that isolates waste from groundwater and air, unlike an open dump.

Liquid that has percolated through waste and dissolved or suspended contaminants, requiring capture and treatment to prevent groundwater pollution.