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Boston, MA · Suffolk County

Water Risk Profile — ZIP 02110

Flood risk, local cost data, climate factors, and insurance context for your ZIP code.

Flood Risk

Medium

Cost Range

$1,500–$8,500

Avg Response

42 min

NFIP

State participates

Local Climate & Risk Factors

Boston, Massachusetts water damage risk is shaped by its northeast coastal climate and aging housing stock. Boston and surrounding communities have some of the oldest housing in the U.S. — pre-1930 homes with original galvanized steel plumbing, clay tile drain systems, and minimal insulation create high pipe burst and water intrusion risk. Nor'easters from November through April deliver 2–4 inches of rain or equivalent snow with 50–70 mph winds that force water under roofing materials. Massachusetts' combined sewer overflow (CSO) system discharges sewage into basements in older communities during heavy rain. Ice dams form on every improperly insulated roof in Massachusetts — a preventable source of ceiling water damage.

Flood-prone areas: East Boston, with large portions at or near sea level adjacent to Boston Harbor, faces the city's most acute Nor'easter surge risk — FEMA flood maps show extensive AE and VE zones covering residential blocks in Orient Heights and around Maverick Square. Dorchester's lower streets near the Neponset River and South Boston's waterfront blocks regularly take on tidal and storm-surge water during major coastal storms, and Boston's sea level has already risen nearly a foot since 1950.

Insurance tip: Massachusetts Division of Insurance allows insurers to move coastal properties to the state-backed FAIR Plan when private carriers decline to cover them — but FAIR Plan homeowners policies carry no flood coverage, requiring a separate NFIP or private flood policy. Massachusetts has no mandatory inland flood insurance requirement, leaving many triple-decker owners uninsured despite routine basement flooding from the Charles and Neponset river corridors.

Water Category Cost Table — Boston, MA

Extraction & drying cost per square foot by IICRC water category

Water Category$/sq ft
Category 1 — Clean

Burst supply line, clean appliance overflow

$2.72–$6.74
Category 2 — Gray

Dishwasher, washing machine, toilet bowl (no feces)

$6.74–$8.16
Category 3 — Black

Sewage backup, floodwater, toilet overflow with feces

$9.59–$12.1

Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Boston market (3.211/sq ft range).

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