Waterford's Seismic Design Category, explained

Under the seismic model IBC and ASCE 7 use for new construction, Waterford is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Waterford in the 22th percentile nationally for seismic hazard - higher than 22% of the 4,875 US cities USGS was checked against here.

How Waterford compares

USGS's underlying values for Waterford: 0.042g peak ground acceleration, 0.085g at short period, 0.051g at 1 second. Within Wisconsin alone, Waterford ranks 17 of 157 cities by seismic hazard - the 90th percentile in-state. Waterford has a population of about 5,885.

Bracing and bolting: the actual cost

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Wisconsin specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Wisconsin.

Earthquake insurance for a Waterford home

A Waterford homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Waterford's figures come from

Waterford's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Waterford.