Research · Updated 2026-07-02

U.S. Water Damage Statistics

The latest data on water damage claims, costs, causes, and flood risk — sourced from Triple-I, FEMA, EPA, and IICRC standards. Cite freely with attribution.

22.6%

Home insurance claims from water damage & freezing

Share of all U.S. homeowners insurance claims (2023 data, Triple-I 2025 report)

1 in 67

Insured homeowners filing water/freeze claims annually

Average frequency 2019–2023 (Triple-I)

$15,400

Average water damage insurance claim

2019–2023 average claim amount (Triple-I)

$25,000

Damage from 1 inch of floodwater in a home

FEMA / NFIP estimate for typical single-family home

$180B+

Annual U.S. flood damage costs

National aggregate (FEMA)

10,000 gal

Household water wasted by leaks annually

EPA WaterSense — average U.S. home

24–48 hrs

Mold colonization window after water damage

FEMA; IICRC S500 drying urgency standard

90%

Natural disasters involving flooding

NFIP — share of U.S. natural disasters with flood component

Water Damage Claim Trends (2019–2023)

Year	Share of All Claims	Avg Claim Value
2019	24.1%	$10,900
2020	23.8%	$11,800
2021	25.2%	$14,200
2022	23.5%	$15,100
2023	22.6%	$15,400

Source: Insurance Information Institute (Triple-I), 2025 report based on 2023 data.

National Restoration Cost Benchmarks

National average restoration project

$1,384–$6,384(avg $3,867)

Clean water (Category 1) per sq ft

$3.75–$4.25/sq ft

Gray water (Category 2) per sq ft

$4.1–$6.5/sq ft

Black water (Category 3) per sq ft

$7–$7.5/sq ft

Class 1 (partial room)

$150–$400

Class 2 (entire room, walls ≤12 in)

$500–$1,000

Class 3 (ceilings, walls, floors)

$1,000–$3,000

Class 4 (major structural / flood)

$20,000–$100,000

Use our free cost calculator for a personalized estimate by water category, square footage, and state.

Top Causes of Water Damage

Plumbing leaks & burst pipes29%

Appliance failures (water heater, washer, dishwasher)21%

Weather / storm-related (non-flood)18%

Roof leaks14%

HVAC / AC condensate8%

Sewer backup6%

Other4%

Expert Perspectives

“FEMA's estimate reflects the widespread damaging impacts that water can have on flooring, walls, insulation, furniture, and personal belongings. Water can damage drywall, warp floors, ruin electronics, and promote mold growth.”
— Michael Loik, Ph.D., Professor of Environmental Studies, UC Santa Cruz

“Most homes have at least some degree of flood risk, regardless of their location. FEMA says even with low or moderate flood risk, your home is still five times more likely to flood than experience a fire over the next 30 years.”
— Courtney Klosterman, Home Insights Expert, Hippo Insurance

“Clean water has a low to minimal contamination level. Gray water carries mild to moderate health risks. Black water has a high contamination level and carries severe health risks.”
— Juneseok Lee, Ph.D., Professor, Manhattan University

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Data licensed under CC BY 4.0. Primary sources linked below.

Primary Sources

Methodology: How HearthDry sources and updates data

Water Damage Statistics FAQ

: According to Triple-I data (2019–2023), approximately 1 in every 67 insured homeowners files a water damage or freezing claim each year. Water damage and freezing account for 22.6% of all homeowners insurance claims — the second-most common cause after wind and hail.
: The average water damage and freezing claim paid by insurers was approximately $15,400 over the 2019–2023 period (Triple-I). Out-of-pocket restoration costs for uninsured or partially covered events typically range from $1,384 to $6,384 nationally, with an average around $3,867.
: FEMA and the NFIP estimate that just 1 inch of water in a typical home can cause up to $25,000 in damage to flooring, drywall, insulation, furniture, and personal belongings.
: FEMA and IICRC S500 standards indicate mold spores can begin germinating within 24–48 hours under warm, humid conditions. Professional structural drying should begin within the first 24 hours to prevent mold colonization.
: Standard homeowners insurance typically covers sudden and accidental internal water damage (burst pipes, appliance failures) but excludes gradual leaks, poor maintenance, and flooding from external sources. Flood damage requires separate NFIP or private flood insurance.

Experiencing Water Damage Now?

1 in 67 homeowners file a claim each year. Don't wait — mold starts in 24–48 hours.

(888) 217-3503 Estimate Your Cost

Year

Share of All Claims

Avg Claim Value

2019

24.1%

$10,900

2020

23.8%

$11,800

2021

25.2%

$14,200

2022

23.5%

$15,100

2023

22.6%

$15,400

National Restoration Cost Benchmarks

National average restoration project

$1,384–$6,384(avg $3,867)

Clean water (Category 1) per sq ft

$3.75–$4.25/sq ft

Gray water (Category 2) per sq ft

$4.1–$6.5/sq ft

Black water (Category 3) per sq ft

$7–$7.5/sq ft

Class 1 (partial room)

$150–$400

Class 2 (entire room, walls ≤12 in)

$500–$1,000

Class 3 (ceilings, walls, floors)

$1,000–$3,000

Class 4 (major structural / flood)

$20,000–$100,000

Use our free cost calculator for a personalized estimate by water category, square footage, and state.

Expert Perspectives

“FEMA's estimate reflects the widespread damaging impacts that water can have on flooring, walls, insulation, furniture, and personal belongings. Water can damage drywall, warp floors, ruin electronics, and promote mold growth.”

“Most homes have at least some degree of flood risk, regardless of their location. FEMA says even with low or moderate flood risk, your home is still five times more likely to flood than experience a fire over the next 30 years.”

“Clean water has a low to minimal contamination level. Gray water carries mild to moderate health risks. Black water has a high contamination level and carries severe health risks.”

Water Damage Statistics FAQ

According to Triple-I data (2019–2023), approximately 1 in every 67 insured homeowners files a water damage or freezing claim each year. Water damage and freezing account for 22.6% of all homeowners insurance claims — the second-most common cause after wind and hail.

The average water damage and freezing claim paid by insurers was approximately $15,400 over the 2019–2023 period (Triple-I). Out-of-pocket restoration costs for uninsured or partially covered events typically range from $1,384 to $6,384 nationally, with an average around $3,867.

FEMA and the NFIP estimate that just 1 inch of water in a typical home can cause up to $25,000 in damage to flooring, drywall, insulation, furniture, and personal belongings.

FEMA and IICRC S500 standards indicate mold spores can begin germinating within 24–48 hours under warm, humid conditions. Professional structural drying should begin within the first 24 hours to prevent mold colonization.

Standard homeowners insurance typically covers sudden and accidental internal water damage (burst pipes, appliance failures) but excludes gradual leaks, poor maintenance, and flooding from external sources. Flood damage requires separate NFIP or private flood insurance.