# Master Plumbing & Mechanical Master Plumbing & Mechanical is a backflow tester with an address in Silver Spring, MD, United States. Master Plumbing & Mechanical appears on the DC Water register (Registered Backflow Prevention Assembly Service Provider), with an address in Silver Spring, MD. Services named in the source: backflow prevention assembly commercial installer, backflow prevention assembly commercial inspector, backflow prevention assembly residential installer, backflow prevention assembly residential inspector. ## Details - Address: 9232R Warren St, Silver Spring, MD, 20910, United States - Phone: [13016509100]() - Website: [www.masterplumbing.com]() - Source of the listing data: DC Water — Registered BPA Service Providers, https://www.dcwater.com/sites/default/files/engineering/bpa-service-providers.xlsx, fetched 2026-11-10. Website, street address, map pin from Overture Maps Places (CDLA-Permissive-2.0, release 2026-10-21.0). ## Questions ### Where is Master Plumbing & Mechanical? Master Plumbing & Mechanical is at 9232R Warren St, Silver Spring, MD, 20910, United States. ### How do I contact Master Plumbing & Mechanical? To contact Master Plumbing & Mechanical, call 13016509100 or visit https://www.masterplumbing.com. ## Source From [Backflow tester registers and portals](https://www.dcwater.com/sites/default/files/engineering/bpa-service-providers.xlsx), license Registers and portals: no specific reuse licence identified. See per-register terms in notes., checked 2026-11-11. Last updated November 11, 2026. ## Links - This backflow tester on the [web page]() - [Backflow installation in Silver Spring]() - [More backflow testers in Silver Spring]()