Looking for a Phase I ESA in Castroville, TX? Describe your project once and up to five environmental consultants who work in Castroville and Medina County get back to you with a quote. It's free and there is no obligation.
Castroville is home to about 3,201 people (2024 Census Bureau estimate), a growing community (+7.9% since 2020). With 903 people per sq mi, it is a semi-rural area. Commercial sales and loans here routinely require a Phase I, especially for former industrial, gas station and dry cleaning sites.
Castroville at a glance
- Population (Census Bureau estimate, 2024)
- 3,201 (+7.9% since 2020)
- Rank in Texas
- 478th of 1,224 cities and towns
- Land area
- 3.5 sq mi
- Population density
- 903 people per sq mi (semi-rural)
- Type
- City (Castroville city)
- Main county
- Medina County
What to check before hiring in Castroville
- Qualifications: the report is signed by an Environmental Professional under the EPA All Appropriate Inquiries rule; some states also license environmental consultants.
- Lender requirements: check whether your lender has its own scope or reliance letter requirements.
- Timing: order early: records requests and the site visit take time.
- Price drivers: property size and history, number of buildings and turnaround.
Useful official resources
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EPA: brownfields
All Appropriate Inquiries and brownfields programs.
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ASTM International
Publisher of the E1527 standard.
Services available in Castroville
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Phase I Environmental Site Assessment
Records review, site visit and interviews to ASTM E1527 by an Environmental Professional, for a purchase or a loan.
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Phase II Environmental Site Assessment
Soil, groundwater or vapor sampling when a Phase I identifies a recognized environmental condition.
Frequently asked questions in Castroville
How much does a Phase I ESA cost in Castroville, TX?
It depends on the size and history of the property and the turnaround. Describe the property: consultants who serve Castroville send a proposal.
How long does it take?
Often two to three weeks; rush service is usually available.
What if the Phase I finds something?
A Phase II may be recommended to sample soil or groundwater and assess the extent.
Which environmental consultants will contact me?
Up to five independent environmental consultants who serve Castroville 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.