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Preserving Potable Water: A Case of Steel Pipe Repair in a Service Reservoir
In the United States, thousands of water treatment facilities work tirelessly to provide clean, safe drinking water to millions. After treatment, the water is transported through an extensive network of pipes and stored in reservoirs. These reservoirs often include pumping stations that help move water between different locations and elevations. While many are above ground—like the familiar water towers—others are hidden underground, especially in hilly or mountainous regions.
Over time, the steel components inside these reservoirs are constantly exposed to moisture, leading to corrosion. This can cause leaks, water loss, and even contamination of the potable water supply. In one case, an underground service reservoir in the southwestern U.S. faced urgent repair needs when three outlet pipes began showing signs of pitting and leakage.
Approximately 5% of the pipes were affected by corrosion, a result of long-term exposure to both water and oxygen. In some areas, the corrosion had weakened the edges of the concrete tank, causing structural damage and leaks. The repair had to meet strict safety standards, specifically NSF-61 certification, to ensure the continued safety of the water supply. The reservoir could only be taken offline for a short period, making the project time-sensitive and requiring a quick yet effective solution.
To address this challenge, HJ3’s CarbonSeal Steel Pipe Repair System was selected. This system is UL-approved and meets ANSI/NSF Standard 61, ensuring it is safe for use with potable water. The installation was completed efficiently, allowing the reservoir to return to service without significant disruption.
The process began with thorough surface preparation, including abrasive blasting using NSF-61 approved media. Then, each pipe was patched, primed, wrapped with carbon fiber, and finished with a chemical-resistant topcoat. This method restored the pipes to their original strength while maintaining the integrity of the water system.
Thanks to HJ3’s CarbonSeal system, the three leaking outlet pipes were successfully repaired in just one day. The project met all safety and timeline requirements, proving that modern repair technologies can deliver fast, reliable results in critical infrastructure.
For more information about HJ3’s CarbonSeal steel pipe system and other NSF-61 compliant solutions, contact us via email or call 877-303-0453 today.
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