Engineering design, DEP submissions, and backflow prevention plans that protect NYC's drinking water and keep your property compliant.
Precision Engineering provides comprehensive cross connection control and backflow prevention services for commercial, industrial, institutional, and residential properties throughout New York City.
Per NYC DEP, a wide range of facilities — including auto repair shops, commercial kitchens, medical and dental offices, schools, laundromats, car washes, hotels, and buildings with irrigation systems, pools, boilers, or multiple water services — are required to install and maintain backflow prevention devices to safeguard the public water supply.
Our team handles every step of the process: site evaluation and hazard assessment, engineering design, DEP plan preparation and submission, self-certification reviews, record drawings, and ongoing annual compliance support. We coordinate closely with Licensed Master Plumbers and certified backflow testers to deliver a turnkey path from notice to approval.
Whether you’re opening a new business, renovating a building, responding to a DEP backflow notice, or installing a new water service, we provide code-compliant designs and end-to-end project management — with fast turnaround and clear communication across all five boroughs.
Protecting the public water supply. Keeping your property DEP compliant.
Solutions we provide.
Engineering planning from A to Z — with no headaches in between.
Mechanical Systems Design
HVAC systems designed for optimal comfort and energy efficiency in any climate.
Electrical Systems Design
Safe, reliable electrical systems tailored to your building's unique requirements.
Plumbing Systems Design
Efficient water and waste systems built to code with sustainability in mind.
Fire Alarm & ARCS Design
Comprehensive fire alarm system design focused on life safety, code compliance, and seamless system integration
Fire Protection Design
Advanced fire protection systems designed to protect lives, property, and critical operations.
Cross Connection Control
Engineering design, DEP submissions, and backflow prevention plans that protect NYC's drinking water and keep your property compliant.
NYC DEP Site Connection (SD1 & SD2)
Site connection design, stormwater management, and DEP filing services for new developments and building expansions across NYC.