Mark Williams
Reviewing plumber · Washington · 21 years in the field
Every entry below was reviewed against current WA code before publication.
Entries reviewed by Mark Williams 9 entries
Frozen Water Line Replacement: Costs, Options, and When to Replace
When to replace vs repair a frozen water line, trenchless options, permits, and what water line replacement costs in Seattle. WA plumber reviewed with 21 years experience.
Grading: How to Slope Water Away From Your Foundation
What grading is, how much slope your foundation needs, and how to fix grading that drains toward your house. WA plumber reviewed with 21 years experience.
How Long Do Galvanized Pipes Last? A Realistic Assessment
Realistic galvanized pipe lifespan expectations, signs they're near the end, and when to replace vs. wait. WA plumber reviewed with 21 years experience.
Main Line Clog Symptoms: How to Know If Your Sewer Line Is Blocked
Signs your main sewer line is clogged, what causes it, how serious it is, and what it costs to clear. WA plumber reviewed with 21 years experience.
Old Toilet Replacement for Efficiency: When It Makes Sense
When replacing an old toilet saves water and money in Seattle, and what to expect for cost. WA plumber reviewed with 18 years experience.
Seattle Plumbing Permit Cost: What to Expect
What plumbing permits cost in Seattle and what work requires them. WA plumber reviewed with 24 years experience.
Water Backing Up in Toilet: Causes and What to Do
Why water backs up in the toilet, how to tell if it's a simple clog or sewer line problem, and what to do. WA plumber reviewed with 24 years experience.
Water Pressure Regulator: Signs It’s Failing and When to Replace It
Signs your PRV is failing, cost to replace it in Seattle, and whether you can DIY it. WA plumber reviewed with 21 years experience.
Well Water Contamination from Septic: Signs and Testing
Moderate · 10 min. How septic systems can contaminate well water in Washington, what the signs are, and how to test. WA plumber reviewed with 24 years experience.