
Professional Excavation, Septic Services & Water Well Drilling in San Tan Valley, AZ
🛠San Tan Valley, AZ
Professional Excavation, Septic Services & Water Well Drilling in San Tan Valley, AZ
When you need reliable excavation, septic services, water well drilling, or land clearing in San Tan Valley, AZ, Granillo Construction is the trusted local contractor for the job. We provide complete site preparation, underground utility installation, trenching services, well pump solutions, dirt road construction, and grading services for residential, commercial, agricultural, and rural properties.
Our experienced team uses professional equipment and proven methods to complete projects safely, efficiently, and on schedule. Whether you need a new septic system, water line installation, land clearing, or road grading, we deliver quality workmanship from start to finish.


🛠San Tan Valley, AZ
Excavation Services in San Tan Valley, AZ
Professional excavation is the foundation of any successful construction project. At Granillo Construction, we provide precise excavation services tailored to your property's needs.
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Residential and Commercial Excavation Solutions
Our excavation services support a wide range of projects, including home construction, building pads, utility installation, drainage improvements, and site development.
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We carefully prepare the land to ensure a stable and long-lasting foundation.
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Our excavation services include:
• Site preparation
• Building pad excavation
• Foundation excavation
• Drainage excavation
• Utility trenching
• Grading and leveling
Site Preparation and Land Development Services
Proper site preparation is essential before construction begins. We remove brush, debris, and obstacles while grading and leveling the land for new homes, shops, barns, commercial buildings, and agricultural projects throughout San Tan Valley.
🛠San Tan Valley, AZ
Septic Services in San Tan Valley, AZ
Property owners throughout San Tan Valley depend on properly installed septic systems for safe and reliable wastewater management. Granillo Construction provides complete septic installation and excavation services.
New Septic System Installation
Our team handles the excavation, trenching, grading, and installation required for residential and commercial septic systems.
We ensure every project is completed according to local requirements and industry standards.
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Benefits of a professionally installed septic system include:
• Reliable wastewater disposal
• Long-term system performance
• Lower maintenance costs
• Improved property value
Septic Excavation and Drain Field Preparation
The success of a septic system starts with proper excavation and site preparation. We carefully prepare drain fields, trenches, and system locations to help ensure optimal performance and longevity.


🛠San Tan Valley, AZ
Underground Utilities and Trenching Services in San Tan Valley, AZ
Installing underground utilities requires precision excavation and careful planning. Granillo Construction provides trenching services for water, electrical, and utility infrastructure projects.
Water Line Trenching and Installation
We install underground water lines for residential, agricultural, and commercial properties.
Proper trench depth and installation techniques help ensure long-term reliability.
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Our services include:
• Water line installation
• Utility trenching
• Water service connections
• Underground infrastructure upgrades
Electric Conduit Installation and Utility Excavation
Underground electrical conduit protects power lines while creating a cleaner appearance. Our trenching services ensure accurate conduit placement and compliance with project requirements.
Don't Let Poor Plumbing Cause a Messy Situation
With over 23 years in business and more than 100 years of combined experience, our family-owned company delivers precision, reliability, and honesty on every job.

🛠San Tan Valley, AZ
Dirt Road Grading, AB Installation, and Compaction Services in San Tan Valley, AZ
Properly graded roads improve accessibility, reduce erosion, and provide long-lasting performance for residential, agricultural, and commercial properties.
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Dirt Road Construction and Road Maintenance
We build and improve dirt roads, private roads, ranch roads, and access roads. Proper grading helps create smooth travel surfaces while improving drainage.
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Road construction services include:
• Dirt road building
• Access road construction
• Road reshaping
• Surface grading
• Drainage improvements
Aggregate Base (AB) Installation and Compaction
AB installation creates a strong foundation for roads, driveways, and access routes. Our compaction process helps maximize stability and durability.
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Benefits include:
• Stronger road surfaces
• Better load support
• Improved drainage
• Reduced maintenance expenses

