Ground Penetrating Radar (GPR) for Manila water Infratech Services

Client: Manila water infratech services. 

Location: Nuvali, Laguna

Ground Penetraing Radar (GPR) Survey requested for Nuvali Pipe Upgrade Project to prevent costly mistakes before drilling.  With Nuvali, Laguna experiencing a sharp population surge — over 414,000 residents as of 2020 — pressure on existing infrastructure has reached critical levels. Source: Philatlas

Nuvali Geographical map. Source: Google Maps

The demand for reliable water supply has spiked due to a boom in housing developments. In response, a 56-kilometer pipe upgrade project is underway to replace aging water distribution lines and improve service to this fast-growing urban center.

However, excavation in a densely developed area like Nuvali is high-risk. The underground landscape is a complex network of power lines, telecom boxes, and other critical utilities. Accidental damage during excavation can lead to major service interruptions, safety hazards, project delays, and costly penalties for the contractor.

Groundsolv Team is facilitating the training for using the GPR Survey Machine for Manila Water.

To mitigate these risks, our client requested a Ground Penetrating Radar (GPR) Survey — a non-invasive, high-precision scanning technique designed to detect buried infrastructure before construction begins. In an area spanning just 54.84 square kilometers but with a population density of 7,564 people per square kilometer, a proactive survey isn’t just advisable — it’s essential.

Groundsolv team is performing a field test of the GPR survey machine for Manila Water.

Our team went to the field to execute the GPR survey objectives. Led by Engr. Kristian, a geotechnical specialist with over a decade of experience, our team conducted an on-site GPR survey and technical training for the client’s field staff. Using advanced radar technology, we scanned and analyzed the target pipeline routes to help prevent excavation-related utility strikes.

Groundsolv team is conducting a field survey of the GPR survey machine for Manila Water in the target location.

GPR provides several key advantages for underground water pipeline detection:

1. Versatile Detection Across Pipe Types

Unlike traditional electromagnetic methods, GPR can detect both metallic and non-metallic pipes (e.g., PVC, concrete, plastic), making it ideal for identifying a broad range of utility types buried underground. Source: GPradar

2. Non-Invasive and Safe

GPR emits high-frequency radio waves into the ground and captures reflections to map subsurface structures. This allows teams to locate utilities without any surface disruption or risk of damage.

3. Leak and Anomaly Detection

GPR can detect water saturation or voids around pipelines, helping identify leaks and structural damage. This is especially useful for maintenance planning and preventing future failures.

4. Accurate Depth and Location Mapping

With modern GPR systems, we’re able to estimate pipe depth and position with high accuracy — typically within 20–25 centimeters in urban settings. Real-time 3D imaging improves interpretation and trench planning.

Manila Water Team using the GPR Survey Equipment with assistance form Groundsolv Team.

Deliverables and Outputs from the GPR Survey

Our survey produced a full suite of outputs to guide safe and efficient execution of the pipe laying project:

• Subsurface Utility Maps (2D & 3D): Show the horizontal and vertical positions of all detected utilities.

• Depth Profiles: Assist engineers in designing proper trench depths and avoiding existing pipes.

• Pipe Material and Condition Indicators: Help distinguish between metallic and non-metallic lines; potential leaks or voids are highlighted.

• Polyline Traces and Buffer Zones: Used to visualize pipe paths and safety clearances during excavation.

• Anomaly Reports: Flag unusual reflections that may indicate pipe blockages, deterioration, or unknown buried objects.

• GIS/CAD Integration: All data is compatible with GIS and CAD platforms for seamless planning and project coordination.

• Real-Time Visualization: GNSS-enabled devices allow instant, geo-referenced data review on site — supporting fast, informed decisions during construction.

Groundsolv team together with Manila water checking on the field data gathered real time.

GPR is a smart investment. In a project of this scale and complexity, preventing mistakes is far less expensive than correcting them. GPR provides the visibility needed to plan confidently, avoid service disruptions, and protect critical assets underground. As Nuvali continues to grow, this level of foresight and precision will be essential for delivering infrastructure upgrades on time, on budget, and without incident.

This is just the beginning. Let's collaborate to ensure a sustainable water future for all. If you need any further modifications or additional information, feel free to let me know.