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Environmental Health

Hazard in Public Health

A hazard carried by the environment, mosquitoes and ticks, toxic blooms and invasive species, whose range shifts with the climate and the water.

Includes: Vector-Borne Disease Outbreak, Harmful Algae Bloom, Invasive Species

  • Vector-Borne Disease Outbreak. A seasonal health hazard spread by mosquitoes and ticks, with a range that is shifting as the climate warms.
  • Harmful Algae Bloom. A water-quality hazard of toxic blooms that close lakes, threaten drinking water and harm pets, livestock and wildlife.
  • Invasive Species. A slow-moving ecological hazard that damages crops, forests, waterways and infrastructure once established.
See a sample briefBook a walkthroughAll 31 hazards →

Sample brief

The first page of a Environmental Health brief: likelihood, impact and readiness on your own scale, with each figure sourced.

Evidence brief for Cedar Ridge County (example)

September 14, 2026

Environmental Health

Hazard in Public Health, on the established threats & hazards list

Impact
5432112345

Likelihood

Likelihood
2

Unlikely — Possible but infrequent — roughly once in 50 to 100 years (1–2% chance in any year).

Impact
2

Minor — Limited effects — few injuries, damage confined to a small area, brief localized disruption of services.

Readiness
4

High — The organization has a well-developed capability to manage this threat or hazard. Plans, personnel, resources, and skills are largely in place, and the capability has been meaningfully tested or demonstrated. Remaining gaps are unlikely to significantly impair performance.

  • 2source documents
  • 58verified mentions
  • —federal declarations
  • —NRI risk score
Worked example: Cedar Ridge County is fictional. The scores illustrate the format and are nobody's decision. Open a full sample brief →

The national record

FEMA’s National Risk Index doesn’t model Environmental Health. Your team fills it with local evidence, and Hazzard shows the gap rather than a zero.

How it maps

The same hazard in the vocabularies your plan and FEMA already use.

FEMA National Risk Index
Not covered
FEMA declaration incident type
Not covered
NOAA Storm Events type
Not covered
Hazzard category
Public Health, disease and living systemsincludes Vector-Borne Disease Outbreak, Harmful Algae Bloom, Invasive Species

The national record

What the federal data says about Environmental Health: nothing yet

No federal dataset scores Environmental Health or files declarations under it. That's common for threats and emerging hazards, and it's why a brief for Environmental Health is built from your own plans, exercises and records. Hazzard shows the gap instead of inventing a number.

In your plan

What a Environmental Health profile needs, and where each part comes from

A local hazard mitigation plan profiles each hazard the same way (44 CFR 201.6). Here is how Hazzard fills each part for Environmental Health.

  1. Location

    44 CFR 201.6(c)(2)(i)

    Your documents

    No national layer maps Environmental Health. We draw the geographic extent from your plans, studies and annexes, cited to the page.

  2. Extent

    44 CFR 201.6(c)(2)(i)

    Your documents

    The magnitude your plans use for Environmental Health (a scale, a depth, an acreage, a duration), read from your documents and cited, so the profile states the strength you plan for.

  3. Previous occurrences

    44 CFR 201.6(c)(2)(i)

    Your documents

    FEMA files no declaration type for Environmental Health. The history comes from your after-action reports, incident records and plans.

  4. Probability of future events

    44 CFR 201.6(c)(2)(i)

    Your team decides

    No national dataset gives a frequency for Environmental Health. Your team scores likelihood on your scale from the evidence we organize.

  5. Vulnerability and impacts

    44 CFR 201.6(c)(2)(ii)

    Your documents

    The Census population profile and HHS emPOWER counts for context; the consequences themselves come from your plans and exercises.

  6. The assessment itself

    Your team decides

    Likelihood, impact and readiness for Environmental Health are drafted with every source attached, and a person on your team accepts each one. Hazzard never records a score on its own.

How we can help

How we’d help you prepare for Environmental Health

  1. 1

    We pull who is most exposed

    HHS emPOWER counts, the Census population profile and any biological declarations for your county.

  2. 2

    We read health and emergency plans together

    Your public-health emergency plan next to the EOP, so what each says about Environmental Health is cited side by side.

  3. 3

    You leave with a cited brief

    Likelihood, impact and readiness for Environmental Health on your own scale, with each figure tied to its source. It is ready for your planning team or council.

Also in Public Health

Preparing for Environmental Health

Prepare for Environmental Health with health and emergency plans in one place.

Health emergencies are planned by one office and answered by several. We read both sides so your community's readiness is assessed as a whole. We reply within one business day.

Book a walkthrough

Takes about two minutes. A person reads each request.

Or start by marking your area on the map