Water Service Install & Backflow Prevention

Backflow prevention is essential to protect your drinking water from contamination. Without it, pollutants like fertilizers or chemicals from irrigation systems can reverse into your clean water supply during pressure drops. At C & L Sullivan, we install certified backflow preventers that act as one-way gates, ensuring only clean water flows into your property. Our technicians are state-certified to install, test, and maintain these devices, ensuring your water remains safe and your system remains compliant with local regulations.

Water service installation connects your property to the public water supply. It includes trenching, laying new HDPE or copper lines, and restoring the site afterward. At C & L Sullivan, we handle every step, from site inspection and permitting to excavation and final grading. Whether it’s a new build or a replacement of aging infrastructure, we ensure a smooth, code-compliant installation using modern materials and techniques like trenchless technology to minimize disruption.

Yes, most municipalities require permits for both water service installation and backflow prevention. These permits ensure the work meets safety and plumbing codes. Our team at C & L Sullivan manages the entire permitting process for you, including submitting plans and coordinating inspections. We make sure everything is approved and documented so you don’t have to worry about compliance issues.

If your property has an irrigation system, fire suppression setup, or any plumbing that could allow water to reverse direction, you likely need a backflow preventer. Local codes often mandate them for commercial and residential properties with potential cross-connections. C & L Sullivan conducts thorough site evaluations to determine risk levels and installs the appropriate device to protect your water supply and meet regulatory standards.

Backflow prevention devices must be tested annually to ensure they function properly. This testing is often required by local water authorities. At C & L Sullivan, our certified technicians perform these tests, provide official documentation, and handle any necessary repairs or replacements. We offer scheduled maintenance plans so you never miss a deadline or fall out of compliance.

Costs vary depending on the type of device, installation complexity, and site conditions. At C & L Sullivan, we provide transparent, itemized quotes upfront—no hidden fees. Our proposals outline every detail so you can make informed decisions with confidence.

There are several types, including Reduced Pressure Zone (RPZ) devices, Double Check Valve Assemblies, Pressure Vacuum Breakers, and Atmospheric Vacuum Breakers. Each is suited to different hazard levels and plumbing setups. Our experts at C & L Sullivan assess your system and recommend the best device for your needs, ensuring optimal protection and compliance with local codes.

Absolutely. As a full-service grading and excavation company, C & L Sullivan not only installs your water line or backflow device but also restores your property afterward. We backfill trenches, compact soil to prevent settling, and clean up the site so it looks as good, or better, than before. Our goal is to leave you with a fully functional system and a tidy, professional finish.