Quick answer
For water damage in Knollwood, TX, shut off your main valve first, or turn off the well pump breaker if you are on a private well. Renters should report the leak to the owner or park office in writing. 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 Grayson County septic office and freeze data are on the Preston page, and the county flash flood table is on the Howe page.
- Shut off the water. Close the valve for your home or unit. If you rent, tell the owner or park manager right away and keep a written record of when you reported the leak.
- 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. About 39% of Knollwood's homes were built since 2010, and most are rented. Ask for moisture readings in shared walls and under the floor, and send photos to your landlord.
A boil water notice was issued in October 2026 for the city's water system in Knollwood Village Mobile Home Park. Follow the notice until officials say the water is safe.
What to know about water damage in Knollwood
764
Knollwood's 2020 census population, up from 205 in 1990. The city covers about 210 acres north of Sherman.
Sources: Knollwood, Texas, Handbook of Texas
Began as a park
Knollwood started as a mobile home park in 1970 and incorporated in the mid-1980s, with the Knollwood Village subdivision as its main development.
Source: Handbook of Texas, Knollwood
City water system
The state lists a City of Knollwood public water system. In October 2026 KXII reported a boil water notice for it in Knollwood Village Mobile Home Park.
Sources: Texas Water Development Board, KXII
Mostly renters
About 31% of Knollwood's homes are owner-occupied, and 34% are manufactured homes. The median home dates to 2007.
City office
The Texas Municipal League directory lists the City of Knollwood's phone as 903-868-9809.
Source: TML directory, City of Knollwood
Check your ZIP
Flash flood warnings in Grayson County
The National Weather Service issued 39 flash flood warnings that included Grayson County from 2016 through November 12, 2026. The year-by-year count is on the Howe page.
Cost and insurance in Knollwood
How much does water damage restoration cost in Knollwood?
Most jobs run $450 to $16,000 (Angi). Rain water that flows in from outside is a flood claim. Newer homes dry faster, but manufactured home floors still need checking.
Water removal and restoration in Knollwood
The company that answers handles leaks in rental units, water under manufactured homes, washer and water heater failures, and sewer backups, plus burst pipes, appliance leaks, drying, and septic backups.
Knollwood questions
Who pays for water damage in a rental in Knollwood?
The owner's policy usually covers the building. Renters insurance covers your belongings. Report the leak to the owner in writing right away.
How do I reach the City of Knollwood?
The Texas Municipal League lists the city's number as 903-868-9809.
Was Knollwood's water under a boil notice?
KXII reported one in October 2026 for the city's system in Knollwood Village Mobile Home Park.
Which ZIP codes does this page cover?
The Knollwood part of ZIP 75092. The ZIP also covers Sherman.
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: