Plumbing scams to avoid: cheap drain specials, needless sewer digs and scare tactics

Updated November 10, 2026 · KeystoneProGuide editorial team

What is the most common plumbing scam in Pennsylvania right now?

The one with the best recent evidence is the cheap drain special that turns into a sewer replacement. In October 2026 the Pennsylvania Attorney General announced a settlement with a plumbing and heating company and two former technicians, resolving allegations that they misled consumers into paying for unnecessary work, particularly sewer pipe replacements, and used scare tactics. The consent order includes $700,000 in consumer restitution, and the two technicians are barred from the plumbing industry for five years. The office notes that a settlement is not an admission of breaking the law.

How did that scheme work, according to the lawsuit?

In four steps, as the Attorney General described them.

1. The bait. Customers with sewer backups were drawn in by an advertised clog-clearing special: $93, or free if it failed.
2. The switch. Once on site, technicians told many of them the clog could not be cleared with a snake, only by costly excavation. The lawsuit alleged the digging was unnecessary and the lines could have been cleared without it.
3. The phantom defect. Many customers were told their sewer pipes had physical defects needing replacement, and later found the defects did not exist.
4. The fear. Some were told they had gas leaks or cracked heat exchangers, diagnoses later discredited by third parties including their gas utilities.

The court had already found, on summary judgment in August 2023, that the company failed to honor three-day cancellations, made false or misleading advertising claims, and misrepresented its flat-rate pricing.

How do you protect yourself from that kind of upsell?

Use the settlement's own terms as your checklist. The order requires the company to document the defects behind any sewer replacement it recommends, to make several attempts to open a line with a snake before selling excavation, to tell customers they may get a second opinion, and to have any gas leak diagnosis confirmed by the gas provider before selling a repair. Ask any plumber for the same: the camera footage or photos, the attempts made, and time to get a second quote.

The stakes justify the pause. This Old House puts the average sewer line replacement at $3,320, and Angi gives a typical sewer line repair of $1,100 to $4,100. A second camera inspection costs a fraction of that: $100 to $500, according to This Old House.

What are the general warning signs of a home repair scam?

The Federal Trade Commission lists six tactics: a contractor who knocks on your door because they are "in the area", who has materials left over from another job, who pressures you for an immediate decision, who wants everything paid up front or only in cash, who asks you to get the building permits, or who steers you to a lender they know. Its page is about home improvement in general, not plumbing, but every one of those tactics fits a plumbing call.

The FTC also warns about loan scams in which a contractor arranges financing, rushes the homeowner into signing papers, and leaves a high-interest home equity loan behind with the work unfinished. Never sign a document with blank spaces.

What happens after a freeze or a storm?

Emergency demand brings out what the Better Business Bureau calls storm chasers: contractors who travel to areas hit by severe weather, go door-to-door offering their services, and disappear after taking the money. The BBB says to avoid anyone using "today only" offers or demanding full payment up front, to get a written contract with all pricing and scope, and to get written receipts. It also suggests checking your insurance policy for plumbing emergencies before you hire.

Pennsylvania law does relax the paperwork for genuine emergencies, but only within limits. The Attorney General's office says work under the emergency provisions of the consumer protection law falls outside the home improvement law only when the emergency meets that law's criteria and the contractor gets the emergency waiver it requires. Read anything you are asked to sign during a crisis.

What about water testing and treatment pitches?

Penn State Extension is blunt about two of them. It says not to rely on in-home testing by water treatment vendors, to use a certified lab instead, and that despite claims to the contrary, no single treatment device removes every contaminant. On softeners, it says the idea of softening as purifying has been spread largely by exaggerated advertising, that softening only removes hardness minerals, which are not a health threat, and that a free hardness test from a softener company is no substitute for an independent lab test that "will protect you from being oversold."

What about unlicensed or unregistered plumbers?

Check for them before anything else. The Attorney General's office says an unregistered home improvement contractor may not offer or perform the work and faces civil penalties of $1,000 or more, and that registration, even when valid, is not an endorsement of honesty or quality. In Philadelphia, the city's contractor page links to a list of plumbers whose licenses were revoked or suspended and a way to report unlicensed work.

Where do you report a plumbing scam?

• The Pennsylvania Attorney General's Bureau of Consumer Protection, through its online complaint forms. Unregistered contractors can also be reported on 1-888-520-6680.
• Your county consumer office, where there is one. The county guides list them.
• The contractor, in writing first. The FTC suggests following phone calls with a certified letter, return receipt requested, and keeping copies.

How to choose a plumber and questions to ask before you hire set out the checks that keep most of these from starting, and plumbers serving the region are on the plumbers directory page.

Sources

1. AG Sunday Obtains Settlement Requiring Home Improvement Group to Pay Consumer Restitution and Undergo Robust Technician Certification Programs, Pennsylvania Office of Attorney General
2. How To Avoid a Home Improvement Scam, Federal Trade Commission
3. BBB Tip: Hiring a plumber during winter storms, Better Business Bureau
4. BBB Tip: Hiring a trusted and verified plumber can save you time and heartache, Better Business Bureau
5. Private Water Systems FAQs, Penn State Extension
6. Water Softening, Penn State Extension
7. Frequently Asked Questions: Home Improvement Contractor Registration, Pennsylvania Office of Attorney General
8. Home Improvement Contractor Verification, Pennsylvania Office of Attorney General
9. Submit a Complaint, Pennsylvania Office of Attorney General
10. Find a licensed contractor and contractor information, City of Philadelphia
11. Sewer Line Replacement or Repair Costs, Angi
12. How Much Does Sewer Line Replacement Cost? (2026 Pricing), This Old House