Which pipe, what it costs, how to fix it — explained plainly.
The independent guide to plumbing pipe for US homeowners. No jargon, no guesswork — just researched answers.
Serving homeowners since 1998. This site began as the ABS pipe class-action claim resource — rebuilt as an independent pipe authority. Every guide is researched, dated and reviewed.
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Five libraries covering every pipe question a homeowner asks.
Pipe Guides
Materials, comparisons, identification and sizing — the core of everything we publish about plumbing pipe.
Browse →Plumbing Cost Guides
What plumbers charge and what projects really cost — verified price ranges for US homeowners.
Browse →DIY Plumbing Repairs
Step-by-step fixes you can do yourself, with the honest limits of DIY called out.
Browse →Home Inspection & Pipe Problems
Failing pipes, inspection checklists and the history behind this site — built for homeowners and inspectors.
Browse →Calculators & Tools
Reference charts and simple tools for pipe sizing and project planning.
Browse →Plumbing Cost Guides
The highest-value content on this site — verified 2026 price ranges before you call a plumber.
Repiping a House
Full-home repipe costs by size and material — PEX vs copper compared.
See cost guides →Sewer Line Replacement
Trench vs trenchless sewer line costs and what drives the price.
See cost guides →Latest Guides
Fresh from the editorial team.
ABS Pipe Lawsuit Explained: What Homeowners Should Know (2026 Update)
The ABS pipe class-action lawsuit explained: the $73.6M settlement, which pipe was affected, and what homeowners with 1980s black pipe should do in 2026.
Read guide →ABS Pipe Sizes Chart: Dimensions for Every Diameter
ABS pipe sizes chart with OD, ID and wall thickness for every DWV diameter, 1-1/4" to 6". Plus how to measure pipe size and choose the right diameter.
Read guide →ABS vs PVC Pipe: What's the Difference and Which Should You Use?
ABS vs PVC pipe compared: material, joining, cost, code, noise and durability. Find out which drain pipe is right for your project in 2026.
Read guide →Can You Mix ABS and PVC Pipe?
You can mix ABS and PVC pipe in one drain system with the right transition fittings. Here are the code rules, correct joining methods, and mistakes to avoid.
Read guide →How to Connect ABS to PVC Pipe
Connect ABS to PVC pipe the right way with a shielded transition coupling. Step-by-step install, sizing tips, and mistakes that cause leaks and failed inspections.
Read guide →How to Glue ABS Pipe: Step-by-Step
Learn how to glue ABS pipe the right way: tools, one-step cement technique, dry-fit routine, cure times, and the 7 mistakes that make joints fail.
Read guide →