Katy vs Missouri City
How do stormwater management rules compare between Katy, TX and Missouri City, TX?
Katy and Missouri City have similar restriction levels.
Katy, TX
Fort Bend County
Katy requires a stormwater pollution prevention plan and TPDES coverage for any construction site disturbing one or more acres, including post-construction BMPs maintained by the property owner.
View full Katy rules →Missouri City, TX
Fort Bend County
Missouri City regulates stormwater discharges and construction site runoff under its drainage and stormwater ordinance, requiring controls to protect the municipal storm sewer system.
View full Missouri City rules →Key Facts Comparison
| Fact | Katy | Missouri City |
|---|---|---|
| Threshold | 1 acre disturbed | - |
| Required permit | TPDES TXR150000 | - |
| Plan | SWPPP plus post-construction | - |
| Maintenance | Owner responsibility | - |
| Contact | Stormwater 281-391-4876 | - |
| Illicit discharges | - | Prohibited |
| SWPPP threshold | - | 1 acre disturbed |
| Post-construction controls | - | Required for new sites |
| Drainage maintenance | - | Owner responsibility |
Highlighted rows indicate differences between cities.
Katy FAQ
Does my single-lot home build need a SWPPP?
Only if it disturbs at least one acre or is part of a larger common plan of development. Smaller standalone lots typically don't trigger TPDES coverage in Katy.
Who maintains BMPs after construction?
The property owner is solely responsible for the operation and maintenance of structural and non-structural BMPs installed on their site, per Katy's stormwater article.
What if my project crosses the one-acre threshold mid-build?
You must stop, prepare and obtain SWPPP approval, and file TPDES coverage before continuing. Operating without coverage is a city and state violation.
Missouri City FAQ
Can I wash my car in the driveway in Missouri City?
Occasional residential car washing is generally allowed, but commercial washing operations and discharges containing soap or pollutants to storm drains are prohibited under the stormwater ordinance.
Do small home projects need stormwater permits?
Most small projects do not need a stormwater permit, but any earth disturbance must avoid sediment runoff to streets and storm inlets to comply with city rules.
Compare other topics
See how Katy and Missouri City compare on other ordinance categories.
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