Quick answer
For water damage in Seis Lagos, TX, shut off your main valve first, or turn off the well pump breaker if you are on a private well. Call the Seis Lagos Utility District at 972-442-6875 and follow the prompts after hours. Then call a water damage restoration company; drying should start within 24 to 48 hours. Texas insurers must acknowledge your claim within 15 days.
Do this first
Local water and septic lines.
The Collin County flash flood table is on the Parker page.
- Shut off the water. Close the valve at your meter box, then call the Seis Lagos Utility District. After hours, follow the phone prompts for water or wastewater emergencies to reach the on-call field technician.
- Make it safe and document it. Cut power to wet rooms from a dry spot, photograph the damage, then report the claim.
- Start drying within 24 to 48 hours. Most homes in Seis Lagos date to the 1990s and 2000s, with a median value near $753,600. Large homes hide leaks under wood and stone floors, so ask for readings in every room near the leak.
In heavy rain, never drive into water over a road. Six inches of moving water can knock a person down.
What to know about water damage in Seis Lagos
6
Lakes built into the rolling land of Seis Lagos, which means Six Lakes in Spanish. The 2020 census counted 1,450 people.
Source: Seis Lagos, Texas
Southfork's developer
Joe Duncan, the original owner of Southfork Ranch, built his family home there in 1970; it was later featured on the TV show Dallas. In Seis Lagos his first phase built 199 homes, 57 more came in 2001, and a third phase added 71 homesites on 55 acres.
Source: Seis Lagos, Texas
Outside city limits
Seis Lagos is in Lucas's extraterritorial jurisdiction, bordered by Lucas on three sides, 29 miles northeast of central Dallas.
Source: Seis Lagos, Texas
2026 main break
A water main broke at about 2:10 a.m. on October 2, 2026, and the state required a boil water notice for all district customers.
Source: Seis Lagos Utility District
Homes in Seis Lagos
Nearly all are owner-occupied, the median home dates to 2000, and about 25% were built since 2010.
Freezes and rain
The NOAA weather station at Lavon Dam, about 3.2 miles away, averages 44.4 nights a year at or below 32°F and 5.4 at or below 20°F. In half of years the first freeze comes by November 19 and the last one after March 10. Pipes in outside walls, attics, and pier-and-beam crawlspaces are the first to split. It also averages 39.79 inches of rain a year, with about 11.9 days of an inch or more.
Check your ZIP
Flash flood warnings in Collin County
The National Weather Service issued 61 flash flood warnings that included Collin County from 2016 through November 12, 2026. The year-by-year count is on the Parker page.
Cost and insurance in Seis Lagos
How much does water damage restoration cost in Seis Lagos?
Most jobs run $450 to $16,000 (Angi). Lake or creek water that flows in from outside is a flood claim. Hardwood, stone, and large rooms need more equipment.
Water removal and restoration in Seis Lagos
The company that answers handles supply line and ice maker leaks, water heater failures in attics and garages, sewer backups from district lines, and burst pipes in hard freezes, plus burst pipes, appliance leaks, drying, and septic backups.
Seis Lagos questions
Who do I call about a water leak in Seis Lagos?
The Seis Lagos Utility District, 972-442-6875. After hours, follow the prompts for an emergency and an on-call technician will respond.
What should I do during a Seis Lagos boil water notice?
During the October 2026 notice, the district said to boil water for two minutes before drinking or cooking, throw out ice made since the break, and turn off automatic ice makers until the notice is lifted.
Is Seis Lagos part of Lucas?
No. It is a census place inside Lucas's extraterritorial jurisdiction, with its own utility district, public water system TX-0430057.
Which ZIP codes does this page cover?
The Seis Lagos parts of ZIPs 75098 and 75002. Those ZIPs mainly cover Wylie and Allen.
Related guides
Other Texas towns- Sewage backup: what to do first
- Water mitigation vs. restoration
- Burst pipe repair cost
- Texas insurance claim deadlines, in plain English
- Frozen and burst pipes: what to do
- Does homeowners insurance cover water damage?
- How long water damage takes to dry
Local phone numbers checked November 2026: