Plumbing in Prosper, TX: Permits, Watering Zones and Who to Call

Who to call in Prosper

The Town of Prosper operates the water and sewer utility. It buys its treated water from the North Texas Municipal Water District, and wastewater is treated by NTMWD and the Upper Trinity Regional Water District (Public Works).

• Water emergency line: 972-569-1000
• After-hours on-call line: 972-832-5812
• Public Works office (7 a.m. to 3:30 p.m.): 972-347-9969
• Utility Customer Service: 972-569-1180, ucs@prospertx.gov

Those numbers come from the town's utility customer service page.

One exception: the Artesia subdivision. Artesia gets its water and sewer from the City of Celina (972-382-3345), not Prosper (utility service). If you live in Artesia, call Celina for anything at the meter or main, and follow Celina's rules for bills and watering.

Leaks and blockages: the town checks first

For a suspected leak or sewer blockage, Prosper's approach is to send a town employee to check whether the problem is in the town's line. If it isn't, the town will tell you to contact a plumber (Public Works). Calling the town first costs nothing and can save you a plumber's call-out fee when the problem is on the public side.

The town has been replacing older water meters at no cost to residents since spring 2025 (meter replacement program). If your usage suddenly looks different after a new meter goes in, compare a few weeks of readings before assuming a leak. Our high water bill guide shows how to test for one with the meter.

Prosper has adjustment request forms for bills affected by a defect or an unusually large bill, listed on its utility forms page. Keep the plumber's invoice for any leak repair; you'll need proof of the repair.

Permits: more than just water heaters

Prosper's homeowner permit page is specific. A permit is required for plumbing installations, including replacing a water heater and installing a water softener or whole-house water filtration system (homeowner permit requirements). That second part catches people out: a softener or whole-house filter often looks like an appliance purchase, but in Prosper it's permitted plumbing work.

• The town's FAQ notes that water heater replacements need a permit under state law, and that homeowners doing their own work must pull permits just like contractors (FAQ).
• Apply through the town's Citizens Self-Service portal.
• Building Inspections: 972-346-3502, option 2, permits@prospertx.gov (building inspections).
• Prosper enforces the 2021 International Codes for permits applied for on or after May 1, 2023 (inspection guidelines).

If you're comparing softener quotes, ask whether the price includes the permit. Our hard water guide covers whether a softener is worth it in the first place.

Water quality

Prosper's 2025 water quality report lists water from Lavon, Texoma, Bois d'Arc and Jim Chapman lakes, treated by NTMWD. Total hardness was 96 to 200 ppm from the Wylie plant and 96 to 144 ppm from the Leonard plant, roughly 6 to 12 grains per gallon. It's disinfected with chloramines, averaging 2.13 ppm, with a temporary switch to free chlorine each year (2025 water quality report; temporary change in disinfectant).

The town reported no lead service lines in the inventory it submitted to the state in 2024, and water loss of about 4.3% in 2025, low for a fast-growing system.

Watering zones and free sprinkler evaluations

Prosper assigns watering days by zone (water conservation):

• April 1 to October 31, twice a week: Zone I on Monday and Thursday, Zone II on Tuesday and Friday, Zone III on Wednesday and Saturday.
• November 1 to March 31, once a week: Zone I on Monday, Zone II on Wednesday, Zone III on Friday.
• Never between 10 a.m. and 6 p.m., and not in rain or freezing weather. No runoff onto streets or hard surfaces.

Town water customers can get a free sprinkler evaluation that checks for broken heads, pressure problems, leaks and whether the rain and freeze sensor works. Request one in the myProsper app or on 972-347-9969 (sprinkler evaluation program).

Backflow rules

Backflow assemblies in Prosper must be tested when installed and whenever work is done on or upstream of them, and certain assemblies need testing every year. Irrigation systems on properties with septic systems need a reduced pressure zone (RPZ) assembly (backflow information). The town's backflow inspector is on 972-310-9736.

Housing age

The median Prosper home was built in 2014, and only about 7% of homes predate 2000, according to Census estimates (American Community Survey 2020 to 2024). Most Prosper plumbing calls are about new-home issues: first water heater replacements, softener and filter installs, fixture parts and irrigation. See water heater lifespan.

Useful Prosper numbers

• Water emergencies: 972-569-1000
• After-hours on-call: 972-832-5812
• Public Works: 972-347-9969
• Utility Customer Service: 972-569-1180
• Building Inspections: 972-346-3502, option 2
• Artesia residents (City of Celina): 972-382-3345
• Gas smell: leave the building and call 911 or your gas utility from outside

These are official town and city lines, not plumbing referrals. We're not affiliated with the Town of Prosper or the City of Celina.

Getting a plumber in Prosper

The town's address uses the 75078 ZIP code, and Prosper sits northwest of McKinney along US 380 and the Dallas North Tollway. We accept requests from Prosper addresses. Each plumbing business sets its own travel area, so whether a particular plumber covers your street depends on the business, and we'll tell you if we can't find a match. For McKinney's own rules, see our McKinney service area page.