Well Casing Service

Clean, reliable groundwater is the backbone of homes, farms, and businesses across Kenya, but behind every successful borehole sits an unsung hero: the well casing. Teko Engineering Ltd, a leading provider of affordable borehole drilling and water‑solutions services in Kenya, offers professional well‑casing services that ensure your borehole remains structurally sound, contamination‑free, and productive for years. Whether you are drilling a new borehole or rehabilitating an existing one, proper casing installation is a critical investment that protects your long‑term water security.

What is well casing and why it matters

Well casing refers to the installation of a rigid lining—usually steel or uPVC—inside a drilled borehole to support the walls and isolate the water‑bearing zone from unstable soil and contaminants. In Kenya’s varied geology, from loose sands in coastal and ASAL regions to fractured rock in the Rift Valley, an unlined borehole can easily collapse, silt up, or admit dirty surface water, leading to failure or costly repairs.

A well‑casing service therefore does three vital things:

• Prevents the borehole walls from caving in, maintaining a free‑flowing channel for water.

• Keeps soil, debris, and pollutants out of the aquifer, preserving water quality.

• Supports the installation of screens, grouting, and pumps so that extraction is efficient and sustainable.

For Teko Engineering Ltd, casing is never an afterthought; it is a core part of any borehole project, designed to match the site’s geology, yield, and intended use.

Teko Engineering Ltd’s well‑casing process

Teko Engineering Ltd follows a structured, field‑tested workflow to ensure that every well casing is installed correctly, safely, and in line with best‑practice guidelines. Their process typically includes the following stages:

1. Site assessment and geology profiling
   Before any drilling begins, Teko conducts a detailed site survey and hydrogeological assessment. This includes evaluating soil type, rock formations, and aquifer depth so that the right casing material, diameter, and thickness can be selected. In areas with loose sand or unstable rock, thicker mild‑steel casing may be preferred, while uPVC is often used in saline or corrosive environments.

2. Precision drilling and hole preparation
   Teko uses modern rotary or percussion drilling rigs capable of reaching significant depths while maintaining straightness and diameter accuracy. Once the target aquifer is identified and the borehole is fully drilled, the bore is cleaned and inspected to remove cuttings and ensure the sides are as smooth as possible for casing insertion.

3. Casing selection and configuration
   Teko’s team chooses from:

   • Mild‑steel casings (4.0–4.5 mm thick) for formations with boulders or unstable rock.

   • uPVC or PVC‑lined casings for sandy or saline environments where corrosion is a concern.

   • Continuous casing for non‑productuve zones and slotted/screened casing for aquifer sections to allow water entry while blocking fine sediments.

   All materials are selected to meet Kenyan and international standards for strength, durability, and water‑safety.

4. Casing installation and alignment
   The casing string is carefully lowered into the borehole using a rig and centralizers to keep it centered. Teko ensures that each joint is properly threaded and tightened to prevent leakage or misalignment. In deep wells, the team may use a combination of continuous casing above the aquifer and slotted sections at the screened zone so that water enters only through the designed entries.

5. Grouting and sealing
   After the casing is in place, Teko injects cement or bentonite grout around the upper sections of the casing to create a watertight seal between the borehole and the surrounding ground. This “seal” prevents surface contaminants—such as manure, sewage, or chemical runoff—from short‑circuiting down the outside of the casing and entering the aquifer.

6. Pump test and yield verification
   Finally, Teko runs a pump test to confirm that the cased borehole delivers the expected yield with minimal sand content or drawdown issues. Any adjustment to the screen or casing configuration is made before the well is handed over to the client.

By following this systematic approach, Teko Engineering Ltd ensures that every well casing job is tailored to the local conditions, not simply a generic “one‑size‑fits‑all” solution.

Benefits of Teko’s well‑casing service in Kenya

Working with Teko Engineering Ltd for well‑casing services brings several practical advantages, especially given their experience in drilling over 2,500 boreholes across Kenya since 2018.​

1. Extended borehole lifespan
   Proper casing can extend the life of a borehole by decades, reducing the risk of collapse, clogging, or contamination. Teko’s use of robust materials and correct installation techniques helps clients avoid frequent repairs or complete replacement of failed wells.

2. Improved water quality and safety
   A well‑sealed casing minimizes the chance of surface and shallow‑ground contaminants entering the aquifer. This is particularly important for schools, hospitals, and housing estates where clean drinking‑water compliance is critical. Teko’s grouting and sealing practices help deliver water that is safer, clearer, and more consistent.

3. Higher yield and efficiency
   With correctly sized and slotted casings, Teko ensures that water can enter the borehole freely while preventing fine sand from entering the pump column. This reduces sanding problems and pump wear, lowering maintenance costs and downtime for farms, factories, and large‑scale schemes.

4. Cost‑effective long‑term solution
   Teko is known for offering competitive local pricing and flexible “Malipo Pole Pole” financing options that make professional borehole and casing services accessible to small‑scale farmers, estates, churches, and small‑town businesses. By investing in quality casing upfront, clients often avoid much higher emergency‑repair bills later.​

5. Compliance and professional support
   Teko prepares the necessary hydrogeological reports and documentation that can support WRMA or NEMA‑related applications, helping clients meet regulatory requirements more smoothly. Their 24/7 emergency support also means that if casing‑related issues arise, technical help is available promptly.​

When to call Teko for well‑casing services

Well‑casing services are essential at three key stages:

• New borehole construction – Any newly drilled borehole should be properly cased before pumps are installed.

• Borehole rehabilitation – Old, failing, or sanded‑up wells often need re‑casing or spot‑casing to restore yield and stability.

• Preventive maintenance – Regular inspection and, where needed, additional casing or sealing can prevent future collapse or contamination.

Teko Engineering Ltd serves clients across Kenya, including Nairobi, Central Kenya, Rift Valley counties, and arid and semi‑arid lands (ASALs), making it possible to access skilled well‑casing services even in remote areas.

Behind every reliable borehole in Kenya is a well‑designed, professionally installed casing system. Teko Engineering Ltd (Teko.co.ke) combines modern drilling technology, sound hydrogeological understanding, and practical experience to deliver well‑casing services that protect your investment, your community, and your water security. Whether you are drilling for a home, a farm, an institution, or a commercial complex, choosing Teko for well‑casing in Kenya means choosing durability, safety, and value over time.