What Pipes Does My Home Have? (Free Pipe Material Identifier)

Last updated: March 2026

By the Plumbing Price Guide Team

Answer a few questions about your home and we will identify the pipe materials most likely in your plumbing system, assess their risk level, and tell you exactly what to do. This tool uses the same logic a plumber follows when evaluating a home's plumbing. It takes about 60 seconds.

Understanding Your Home's Pipe Materials

Lead Pipes (Pre-1950s)

Lead pipes are dull gray, soft enough to scratch with a coin or key (leaving a shiny silver mark), and do not attract a magnet. They were used for water service lines connecting homes to city water mains and, in very old homes, for some interior supply pipes. Lead is a neurotoxin. Children under 6 and pregnant women are most vulnerable.

If you suspect lead pipes, test your water (most utilities offer free kits), flush cold water 2 minutes before drinking, use an NSF-certified filter rated for lead removal, and plan for replacement ($3,000-$8,000 for the service line). Federal Bipartisan Infrastructure Law funding is available in many cities. See our city guides for Columbus, Pittsburgh, Philadelphia, Memphis, St. Louis, Richmond, and Baltimore for city-specific lead programs.

Galvanized Steel (1920s-1960s)

Galvanized pipes are dull gray metal with threaded joints. They are magnetic (a magnet sticks to them, unlike lead). After 60+ years, galvanized pipes corrode from the inside, creating a layer of rust and mineral buildup that progressively restricts water flow. Symptoms include low water pressure throughout the house, rust-colored water (especially when first turning on a faucet), and pinhole leaks. Where galvanized connects to copper, galvanic corrosion accelerates failure at the connection point.

If you have systemic symptoms (low pressure and rust water throughout the house), spot repairs are a waste of money because the corrosion is inside all the pipes. Whole-house repiping with PEX ($3,000-$12,000) is the permanent solution.

Copper (1960s-2000s)

Copper pipes have a green patina (oxidized) or bright copper color with soldered joints. They are not magnetic. Copper is generally reliable with a 50-70+ year lifespan, making it the longest-lasting common supply pipe material. However, in hard water areas (Las Vegas 278 ppm, Phoenix 200-350 ppm, Austin 180-280 ppm, San Antonio 200-300 ppm), pitting corrosion from mineral interaction can cause pinhole leaks after 20-30 years. A water softener prevents pitting and extends copper pipe life significantly.

Polybutylene (1978-1995)

PB is gray flexible plastic, 1/2" to 1" diameter, sometimes stamped "PB2110" or branded "Qest" or "Vanguard." Blue PB was used for outdoor and well lines. Look under sinks, at the water heater, and in the crawl space or basement. A class action settlement (Cox v. Shell Oil, over $1 billion) was reached, but it did not remove PB from homes. States with highest concentration: NC, SC, GA, FL, TX, AZ, NV, VA, MD. See our city guides for Jacksonville, Tampa, Nashville, Charlotte, Raleigh, and Las Vegas for city-specific PB information.

PEX (2000s-Present)

PEX is red (hot), blue (cold), or white (either) flexible plastic with push-fit or crimp fittings. It is the modern standard for residential supply lines: 40-50+ year expected lifespan, resistant to freezing (expands without bursting), scale, and corrosion. Very low risk. California did not approve PEX until 2010, so older CA homes have copper or CPVC instead.

Cast Iron (Pre-1975 for Drains)

Cast iron drain pipes are dark gray/black and very heavy. After 50+ years, internal tuberculation (rocky rust growths) narrows flow and catches waste, while external corrosion weakens the pipe wall. Cast iron fails faster in humid environments: Tampa, Jacksonville, New Orleans, and the Gulf Coast see significantly shorter cast iron lifespans than dry-climate cities. Camera inspection ($100-$500) assesses condition. Replacement with PVC costs $3,000-$15,000.

Orangeburg (1940s-1974, Sewer Only)

Orangeburg is only visible via camera inspection (black/dark brown, may look deformed or egg-shaped). States with highest concentration: CA (Sacramento), MO (St. Louis), OR (Portland), and any area with heavy post-WWII suburban construction.

Clay/Vitrified Clay Pipe (Pre-1970, Sewer Only)

Clay sewer laterals are tan/brown with visible joints every 2-3 feet (only visible via camera). They are brittle, crack from soil movement, and their joints allow root intrusion. Common in pre-1970 homes throughout the Midwest (Kansas City, St. Louis, Cincinnati, Columbus) and Southeast (Atlanta, Charlotte). Camera inspection every 2-3 years for homes over 50 years old. CIPP lining or replacement for permanent fix.

PVC and ABS (1970s-Present)

PVC (white rigid plastic) and ABS (black rigid plastic) are modern drain and sewer materials with 50-80+ year expected lifespans. Very low risk. Minor concerns: extreme heat can cause thermal expansion in exposed PVC, and UV degrades PVC if exposed to direct sunlight.

Pipe Material Quick Reference

How Pipe Materials Affect Insurance

Polybutylene: Many insurers in NC, FL, TX, AZ, NV, and other states refuse to insure homes with PB supply lines or require exclusions for PB-related water damage. Some mandate replacement within 1-2 years of purchase. When selling a home with PB, buyers' lenders may require replacement before financing.

Cast iron drains (Florida): Many Florida insurers require cast iron pipe inspections for homes over 40 years old. Some exclude water damage from cast iron failure or require replacement. Particularly impactful in Tampa and Jacksonville.

Lead: Not an insurance issue per se, but a disclosure issue. Sellers must disclose known lead pipes in many states. Buyers should test water and factor replacement cost into negotiations.

How Pipe Materials Affect Resale Value

Polybutylene: Can reduce a home's value by $5,000-$15,000+ or make it harder to sell. Savvy buyers and inspectors flag PB immediately. FHA and VA lenders may require replacement before approving financing. Sellers increasingly repipe before listing to avoid negotiations.

Galvanized supply lines: Buyers' inspectors will note them. Not a deal-killer like PB, but expect buyers to request a credit of $3,000-$10,000 for anticipated repiping.

Orangeburg sewer: If discovered during a buyer's sewer camera inspection, expect a $4,000-$15,000 credit request. Increasingly standard for buyers to request camera inspections in competitive markets.

PEX repipe as a selling feature: "New PEX plumbing throughout" is a genuinely valuable selling point, similar to "new roof" or "new HVAC."

The Real Cost of Waiting

How to Hire a Plumber for Pipe Replacement

• Get 3 quotes minimum for any repipe or sewer replacement project.
• Ask what material is being installed (PEX is preferred for supply, PVC for sewer).
• Ask what is included: wall patching? painting? permit? inspection? old pipe disposal?
• Ask how long the project takes and whether you will have water at night.
• Verify licensing with your state licensing board.
• Ask for references from similar projects (PB repipe, cast iron replacement).
• Ask about warranty: 1-5 years on labor, 25+ years on pipe materials is standard.

For general plumbing costs, use our cost calculator. Not sure what is wrong? Try our plumbing diagnostic tool. For pipe repair and repiping pricing, see pipe repair costs and water line replacement costs.

Frequently Asked Questions