Questions and Answers
My DC home has old cast iron drain pipes that are frequently clogging. What solutions do you offer?
We frequently address this common issue in Washington, DC's older homes. Our approach involves a thorough inspection to assess the condition of your cast iron pipes. For partial blockages or minor corrosion, we can often perform professional drain cleaning to restore flow. If sections are severely compromised, we recommend and perform precise pipe replacement using durable, modern materials to prevent future problems and protect your home's foundation.
What is included in your plumbing installation or replacement service for fixtures?
Our installation service is comprehensive. For any fixture—be it a toilet, sink, water heater, or shower—we handle the complete job. This includes the safe removal of the old unit, checking and preparing the existing connections, installing the new fixture according to code, testing for leaks, and ensuring optimal operation. We clean up the work area, so you're left with a fully functional upgrade and peace of mind.
How quickly can you respond to a plumbing emergency like a major leak?
We prioritize emergency calls for DC residents and businesses. When you call with an urgent issue, our team aims to provide clear guidance over the phone immediately and dispatch a plumber as quickly as possible. Our reputation is built on fast, reliable response times to contain damage, diagnose the problem—whether from an aging fixture or a burst pipe—and implement a lasting repair.
Business Background
Diamond Plumbing Services is a family-operated business with over 14 years of dedicated service to Washington, DC. Founded and led by certified plumber Matteo Ferrari, our team brings a decade of hands-on experience to every job. We specialize in a comprehensive range of plumbing services, from emergency repairs and water heater replacements to complete bathroom and kitchen installations. Known for our fast response, especially during urgent situations, we approach every project—whether a simple faucet fix or a complex sewer line installation—with precision and a client-centered focus. Our reputation is built on reliability, skilled workmanship, and a deep commitment to ensuring the comfort and satisfaction of our neighbors throughout the DC area.
Core Services
- Sewer repair
- Water heater installation
- Sump pump installation
- Bathtub installation
- Drain installation
- Toilet installation
- Shower installation
Business Location & Hours
| Mon: | 12:00 AM - 11:45 PM |
| Tue: | 12:00 AM - 11:45 PM |
| Wed: | 12:00 AM - 11:45 PM |
| Thu: | 12:00 AM - 11:45 PM |
| Fri: | 12:00 AM - 11:45 PM |
| Sat: | 12:00 AM - 11:45 PM |
| Sun: | 12:00 AM - 11:45 PM |

















