Looking for a sinkhole investigation in Colwyn, PA? Describe your project once and up to three geotechnical engineers who work in Colwyn and Delaware County get back to you with a quote. It's free and there is no obligation.
Colwyn is home to about 2,483 people (2024 Census Bureau estimate), a stable community (+0.4% since 2020). With 9,613 people per sq mi, it is a densely built-up area. Karst geology makes sinkhole activity a real concern for some properties here.
Colwyn at a glance
- Population (Census Bureau estimate, 2024)
- 2,483 (+0.4% since 2020)
- Rank in Pennsylvania
- 376th of 1,013 cities and towns
- Land area
- 0.3 sq mi
- Population density
- 9,613 people per sq mi (densely built-up)
- Type
- Borough (Colwyn borough)
- Main county
- Delaware County
What to check before hiring in Colwyn
- License: in Pennsylvania, investigations are signed by a licensed engineer or geologist.
- Insurance: read your policy's sinkhole and ground collapse wording before you file.
- Report: ask for radar results, boring logs and clear conclusions.
- Price drivers: site size, number of borings and testing.
Useful official resources
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USGS: sinkholes
Official information and guidance.
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Florida Office of Insurance Regulation
Official information and guidance.
Services available in Colwyn
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Sinkhole investigation
Geotechnical investigation with ground penetrating radar and borings, and an engineer's report.
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Sinkhole repair design
Engineering design and oversight of grouting or underpinning repairs.
Frequently asked questions in Colwyn
How much does a sinkhole investigation cost in Colwyn, PA?
It depends on the site and the testing. Describe your property: engineers who serve Colwyn reply with a quote.
How long does it take?
Often a few weeks including field work and report.
Can a sinkhole be repaired?
Often yes, by grouting or underpinning designed by an engineer.
Which geotechnical engineers will contact me?
Up to three independent geotechnical engineers who serve Colwyn and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.