1. Plumbing Codes
Key exam domainIdentify weak areas and improve with focused review.
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Free TX-MP Practice Test
Pass the Texas Master Plumber License Exam exam with confidence.
Start with a free TX-MP practice test and build exam-ready confidence for the Texas Master Plumber License Exam exam.
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Study by domain
Practice the TX-MP exam by domain
2. Plumbing Codes, specific to water heater installation
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing3. Occupational Safety and Health Administration (OSHA) Code Federal Regulations
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing4. Texas Accessibility Standards (TAS), as they apply to plumbing fixture installations
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing5. Liquefied Petroleum Gas piping installation
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing6. Plumbing Related Mathematics
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing7. Plumbing License Law and Board Rules
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing8. Fuel Gas Pipe Sizing chart
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing9. Water Pipe Sizing chart
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing10. Gas Fueled Appliance Vent Sizing chart
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing11. Drainage System Pipe Sizing chart
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing12. design of a three story sanitary drainage and vent system for sixteen (16) plumbing fixtures
Key exam domainIdentify weak areas and improve with focused review.
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Frequently asked questions
Straight answers about the TX-MP exam, the questions, pricing, the free trial, and how this fits your prep.
The TX-MP exam spans 12 domains - Plumbing Codes, Plumbing Codes, specific to water heater installation, Occupational Safety and Health Administration (OSHA) Code Federal Regulations, Texas Accessibility Standards (TAS), as they apply to plumbing fixture installations, Liquefied Petroleum Gas piping installation, Plumbing Related Mathematics, Plumbing License Law and Board Rules, Fuel Gas Pipe Sizing chart, Water Pipe Sizing chart, Gas Fueled Appliance Vent Sizing chart, Drainage System Pipe Sizing chart, and design of a three story sanitary drainage and vent system for sixteen (16) plumbing fixtures. Every practice question maps to one of them, so you train on exactly what's tested.
The Texas Master Plumber License Exam (TX-MP) exam has 308 questions and is completed in 6 hours. Our timed practice tests mirror that length and pacing, so exam day feels familiar.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the TX-MP exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. TX-MP Exam Prep is an independent study resource for Texas Master Plumber License Exam (TX-MP). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 12 TX-MP domains - Plumbing Codes, Plumbing Codes, specific to water heater installation, Occupational Safety and Health Administration (OSHA) Code Federal Regulations, Texas Accessibility Standards (TAS), as they apply to plumbing fixture installations, Liquefied Petroleum Gas piping installation, Plumbing Related Mathematics, Plumbing License Law and Board Rules, Fuel Gas Pipe Sizing chart, Water Pipe Sizing chart, Gas Fueled Appliance Vent Sizing chart, Drainage System Pipe Sizing chart, and design of a three story sanitary drainage and vent system for sixteen (16) plumbing fixtures. You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Yes - the bank is maintained against the current exam outline, and questions are revised when the exam changes.
No honest practice platform can guarantee a pass. What realistic practice does is show you - before exam day - exactly which domains are weak, and give you the repetitions to fix them. That's the difference between hoping you're ready and knowing where you stand.
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
The free sample shows you the question quality. Paid plans unlock the full 1,000+ question bank, exam-style practice modes, mistake review, and - on Fast Track and Pass Confidence - progress analytics that show your readiness by domain.
No. Every plan is a single one-time payment for a fixed access window - 48 hours, 7 days, or 6 weeks. There is no auto-renewal and no recurring billing.
Match it to your exam date: Final Review (2 days) for an exam in the next day or two, Fast Track (7 days) for an exam this week, Pass Confidence (6 weeks) for a structured run-up.
For most countries, the price you see is exactly what you pay - tax is already included. Where local law requires it to be added separately, it's shown clearly at checkout before you pay, so there are never any surprise fees.
Access is instant after payment and runs for your plan's full window from that moment. When the window ends, your local progress stays on your device - you can buy another window any time and pick up where you left off.
Yes - the whole platform is mobile-first: practice, mistake review, and analytics all work on any phone, tablet, or laptop with a browser. Nothing to install.
Every answer feeds your per-domain accuracy, readiness score, and weak-area list. Instead of re-reading everything, you drill the domains that are actually costing you points - that's what moves a score in days, not months.
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Make sure you're signed in with the same email you used at checkout - access activates within a minute of payment. If it still doesn't appear, email us from the contact link in the footer and it'll be sorted out.
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Trusted by TX-MP candidates
Real feedback from TX-MP candidates on Reddit.
"put off studying for the drainage and vent design section way too long. almost didnt take the test in time. ended up cramming with the practice problems on txmpexam.com the last two weeks and it clicked. passed first try, still kinda shocked."
"honestly wasnt sure a website could actually prep you for something like the TX master exam. the water heater install questions on this site were closer to the real thing than i expected. missed a few but passed with room to spare."
"24 years in the trade and the gas pipe sizing chart stuff still gets me. worked thru a bunch of practice sets on this site every night after work for like a month. wasnt exciting but it got me thru the exam. done, moving on with my life."