Lining to improve water quality in old pipes

November 5, 2025

The technique of pipe lining offers an innovative solution for repairing damaged pipes without the need for complete replacement. It involves introducing a resin liner inside damaged pipes, forming a new, durable and hermetic lining.

This process is particularly advantageous for improving the quality of water circulating in old pipes.

In the remainder of this article, we'll explain the link between old pipes and water quality, how pipe lining works and the steps involved. A case study is also presented to highlight the advantages of this technique, demonstrating how it can renovate your wastewater networks without requiring major work or incurring major expenditure.

Understanding the link between old pipes and water quality

Pipes play a crucial role in the distribution of drinking water and the evacuation of wastewater. However, they deteriorate over time, which can affect water quality.

Here, we explore the consequences of pipe degradation on water, and the associated health and environmental risks.

Effects of pipe degradation on water

Several factors can lead to pipe degradation, including corrosion, cracking, fouling and root intrusion. These problems can lead to leaks, ruptures, blockages and contamination.

The effects vary according to the type and material of the pipes:

Lead pipes, still present in some old buildings, can release lead into the water, posing risks of neurological, kidney or blood disorders.
Cast-iron or steel pipes, often used in sewer systems, can corrode, allowing wastewater to seep into the ground or water tables and causing environmental pollution.
PVC, used for both drinking water and wastewater, can break under pressure, frost or ground movement, leading to leaks or flooding.

Health and environmental risks

Deteriorating pipes can have harmful consequences for public health and the environment. Contaminated water can cause infectious diseases, digestive disorders, dermatitis and allergies.

The presence of contaminants such as bacteria, viruses, parasites or nitrates in water can cause illnesses such as gastroenteritis, hepatitis, amoebiasis and even cancer.

In addition, water pollution can harm aquatic species, disrupt ecosystems, reduce biodiversity, or encourage the proliferation of harmful algae. The discharge of untreated wastewater into watercourses, for example, can cause eutrophication, suffocating aquatic life through lack of oxygen.

Pipe lining as a solution to the problem

Pipe lining offers an effective, long-lasting solution to problems of pipe deterioration and water quality. This trenchless rehabilitation method repairs pipes from the inside out, without the need for replacement. Let's explore the principle of pipe lining, its benefits for water quality, and how it compares with other rehabilitation methods.

Lining principle

This technique involves inserting a resin liner, made of fiberglass fabric impregnated with epoxy or polyester resin, into existing pipes. Introduced by a robot or pneumatic system, the liner is then inflated and heated to perfectly match the shape of the pipe. Once hardened, it creates a new, solid, watertight lining inside the old pipe, without significantly reducing the diameter.

Benefits for water quality

Lining offers several advantages for water quality:

Repairs cracks and leaks, reducing water contamination by pathogens or toxic substances.
Improves pipe resistance to corrosion, fouling and root intrusion.
Prevents the formation of new obstructions, thus avoiding problems such as backflow, flooding or pressure loss.

These benefits help improve the quality of drinking water and protect the environment by preventing pollution of groundwater and watercourses.

Comparison with other rehabilitation methods

Lining is simple, fast and cost-effective. Unlike other methods, there's no need to dig trenches or demolish structures. Access is simply via manholes or drains. The duration of the intervention varies from a few hours to a few days, and the cost ranges from 50 to 200 euros per linear meter, depending on the complexity of the project. This solution is more economical and less invasive than traditional replacement methods, and outperforms other trenchless rehabilitation techniques in terms of strength, watertightness and adaptability.

Case study : Improving water quality through pipe lining

Pipe lining is a proven and effective method for renovating water networks. Below, we share several success stories and positive feedback from municipalities and users who have adopted this technology.

Concrete examples of success

These case studies highlight the positive impact of pipe lining on water quality:

Renovation of an old sewer system: A municipality modernized its 1950s sewer network, which was suffering from cracks, intrusive roots and collapses, using lining. This approach reduced leakage, health risks and ecological impact, while saving time and money compared with more conventional methods.
Lining versus replacement : Comparing lining with total replacement over 500 meters of wastewater pipes, one municipality found that lining was more advantageous in terms of cost, durability and environmental impact. This method avoids the need for major worksites, the inconvenience to residents and traffic, and the production of waste.
A practical guide to pipe lining: A private individual undertook to line his leaking drinking water pipe himself, following a detailed guide. After preparing the pipe, inserting the resin liner and using a steam generator for curing, he obtained a like-new, leak-free and corrosion-resistant pipe, without calling in a professional.

Feedback from municipalities/users

Feedback on pipe lining is generally positive:

"We chose the liner for our wastewater network with Docteur Canalisation. We were fully satisfied with the result, which enabled us to repair without digging up the road. The service was fast, professional and environmentally friendly. We recommend this method for the renovation of water networks.

"The website SOS CANALISATION website introduced me to pipe lining. Faced with a leak in my drinking water pipe and wanting to avoid major costs, I contacted a pro. The result was astonishing: the pipe was repaired quickly, without replacement, improving water quality and pressure. I recommend this method to anyone who wants to save money.

To remember

This article has introduced you to pipe lining, a revolutionary method of repairing pipes without replacing them. You've explored the crucial relationship between the condition of old pipes and water quality, grasped how pipe lining works and its benefits, and discovered instances where the technique has proved effective.

Testimonials from municipalities and individuals who have adopted this solution with satisfaction were also shared.

If you're planning to improve the quality of water flowing through aging pipes, it's advisable to call in a qualified expert. He or she will be able to provide you with a tailor-made quotation and carry out a pipe lining that complies with the relevant standards. This will guarantee better water quality, a stronger pipe network and lower costs.

Improve your water quality with Docteur Canalisation's pipe lining service!

Faced with the problems posed by old pipes and their impact on water quality, it's crucial to find a solution that's both effective and economical. Docteur Canalisation's pipe lining service is an innovative solution that meets your needs without requiring the complete replacement of your pipes. To find out more about this revolutionary service, consult our page dedicated to pipe lining rates.

Why opt for lining your old pipes?

Direct improvement in water quality: By renovating the inside of your pipes with a resin liner, lining eliminates the risk of contamination and restores the integrity of your pipes.
Cost-effective, less intrusive solution: Avoid the cost and inconvenience of heavy replacement work. Lining is carried out without major excavations, minimizing the impact on your daily life and your environment.
Durability and efficiency: With extended service life and increased resistance to corrosion, fouling and root intrusion, lining is a long-term investment in the health of your infrastructure and your water.

The lining process at Docteur Canalisation:

Precise diagnosis: An initial camera inspection determines the condition of the pipes and pinpoints any areas requiring attention.
Preparation and cleaning: Before lining, a thorough cleaning is carried out to ensure optimum resin adhesion.
Liner installation: The resin liner is inserted and molded to the existing structure, forming a new, solid, watertight inner layer.
Final inspection: A post-intervention check confirms the quality and effectiveness of the new coating.

For those faced with water quality problems due to old pipes, lining offers a solution that's not only quick and clean, but also durable and reliable. To get started, schedule an assessment of your pipe system in the PACA regionregion, where our experts will determine the best approach to revitalizing your pipes.

Act now to protect and improve your water system! Visit Docteur Canalisation to find out how our lining solutions can restore the integrity of your pipes and significantly improve the quality of your water. Don't let old pipes compromise your health and your environment.

Contact us today for a customized solution that meets your needs and expectations.