Plumbing companies in Plano, TX
Quick answer
2 plumbing companies have a local office in Plano, TX on 1-800Deals: Benjamin Franklin Plumbing of Dallas and Roto-Rooter Plano, TX. Plano is one of the 13 member cities of the North Texas Municipal Water District, which supplies its drinking water. Each spring NTMWD temporarily changes its disinfectant, and in 2026 the change ran from March 2 to March 30.
Last updated September 28, 2026. Sources are linked below.
Plumbing companies serving Plano and nearby Collin County communities, with the services and service areas each one lists. We list 2 companies with a local office here:
- Benjamin Franklin Plumbing of Dallas, 1100 Jupiter Rd, Plano. Services include sinks, sink installation, sink repair, toilets, toilet installation, toilet repair; serves Addison, Allen, Argyle, Arlington, Bedford, Carrollton, Celina, Colleyville, Coppell, Dallas and more.
- Roto-Rooter Plano, TX, 903 E 18th St, Ste 216, Plano. Services include drain cleaning, emergency plumber, water heater repair, water damage, commercial plumbing, hydro jetting; serves Addison, Ennis, Balch Springs, Carrollton, Duncanville, Farmers Branch, Cedar Hill, Rockwall, Sachse, Murphy and more.
What to know about plumbing in Plano
Lavon Lake water for Plano taps
Plano is one of the 13 member cities of the North Texas Municipal Water District, which supplies its drinking water. Lavon Lake in Collin County was the first reservoir the U.S. Army Corps of Engineers built to serve NTMWD communities, and it remains the district's largest source, backed by Bois d'Arc Lake, Lake Texoma, Jim Chapman Lake, Lake Tawakoni and the East Fork Water Reuse Project. The district serves more than 2.4 million people across 2,200 square miles. If a plumber recommends filtration or softening equipment, ask that it be sized from NTMWD's published water quality data rather than a generic test strip. Source: North Texas Municipal Water District: Water System
March chlorine maintenance period
Each spring NTMWD temporarily changes its disinfectant, and in 2026 the change ran from March 2 to March 30. During that window the district suspends its usual use of ammonia, so free chlorine instead of chloramine keeps the water disinfected through the system, a step it says protects water quality before hotter temperatures raise the potential for bacterial growth in pipes. Some people notice the chlorine taste, smell or skin contact more, and the district flags the change for dialysis centers and fish and amphibian owners. A stronger chlorine taste in March points to this scheduled maintenance rather than a problem inside your home's pipes. Source: North Texas Municipal Water District: Annual System Maintenance
Backflow rules for softeners and dishwashers
The City of Plano's backflow prevention information sheet calls for a reduced pressure backflow assembly (RPZ) on water softeners and an air gap fitting on the drain line of residential-type dishwashers, with the loop option prohibited. Water heaters need an air gap of at least 2 inches on the temperature and pressure relief drain line, and irrigation systems need a double check, pressure vacuum breaker, spill-resistant vacuum breaker or RPZ. Testable assemblies must be tested by a tester registered with the city's Utility Operations Backflow Division, with the report due within 10 calendar days. When getting a softener quote, confirm the RPZ is included; Building Inspections is at 972-941-7140. Source: City of Plano: Backflow Prevention Information Sheet
Check the license
Texas plumbers are licensed by the Texas State Board of Plumbing Examiners (TSBPE). Before work begins, get the plumber's license number and confirm it shows as active in the board's public license search. Source: official licensing page
Frequently asked questions
Why does Plano's water taste like chlorine in March?
The North Texas Municipal Water District, which supplies Plano, switches temporarily from chloramine to free chlorine each spring to maintain water quality before summer. In 2026 that maintenance period ran from March 2 to March 30.
Does a water softener in Plano need backflow protection?
Yes. The City of Plano's backflow information sheet lists a reduced pressure backflow assembly (RPZ) as the required protection for water softeners, and that assembly must be tested by a tester registered with the city.
How can I check a plumber's license in Plano?
Plumbers in Texas are licensed by the Texas State Board of Plumbing Examiners. Ask for the license number and look it up in the board's public license search to confirm it is active.
1-800Deals lists companies based on the information they publish; a listing is not an endorsement. Before hiring, check licensing, insurance, reviews and a written estimate.
