Common Questions
How do you help prevent outdoor faucets and septic systems from freezing during Rapid City winters?
Rapid City's cold snaps are tough on plumbing. For outdoor faucets, we recommend and can install frost-free hose bibs, which are designed to shut the water off inside your home's warmer wall. We also show homeowners how to properly drain and disconnect hoses each fall. For septic systems, adding insulation over the tank and pipes is key, and we can assess your specific setup to recommend the best approach to prevent costly freeze-ups and ensure everything functions through the winter.
I'm dealing with a plumbing repair. As the owner, will you be the one doing the work and providing the estimate?
Yes, absolutely. When you call Black Flag Plumbing, you speak directly with me, the owner. I'll discuss the issue with you, provide a clear, upfront estimate with room to work with your budget, and I will be the one who shows up to complete the job. There are no middlemen or surprise charges. This direct approach is the core of my business—it ensures honesty, accountability, and that you're getting a fair deal from someone who cares about the quality of the work in your home.
What's included in your plumbing installation or replacement service for items like water heaters or sump pumps?
Our installation service is comprehensive. For a water heater, sump pump, or any major fixture, the job includes removing the old unit, proper installation of the new one according to Rapid City code, testing for leaks and operation, and cleaning up the work area. We handle all the connections, disposal of the old unit, and will walk you through the operation of your new appliance. Our goal is to provide a complete, worry-free installation so your system is reliable for years to come.
Company Background
Black Flag Plumbing is a Rapid City-owned and operated business built on a simple promise: fair, honest, and affordable plumbing service. After years in the trade, owner-operator [Your Name] realized that the biggest problem facing local homeowners wasn't the leak or the clog—it was the unexpected, often inflated bill that followed. Tired of handing customers estimates they couldn't afford when he knew there was a better way, he decided to start a business that puts people first. As the sole owner and employee, you deal directly with the person doing the work, ensuring clear communication, transparent pricing, and a personal stake in every job done right. From a dripping faucet in a Canyon Lake home to a full bathroom remodel in West Rapid, Black Flag Plumbing brings reliable, straightforward service to the Black Hills, treating every customer like a neighbor.
Core Services
- Gas line installation
- Faucet installation
- Sump pump repair
- Plumbing repair
- Toilet repair
- Sump pump installation
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |





