Stormwater Management: Grand Prairie vs Irving
How do stormwater management rules compare between Grand Prairie, TX and Irving, TX?
Irving has fewer restrictions than Grand Prairie.
Grand Prairie, TX
Dallas County
Grand Prairie requires all development to comply with the City Drainage Design Manual and erosion control standards. The Stormwater and Engineering Department reviews drainage plans and issues Clearing and Grubbing/Earthwork permits.
View full Grand Prairie rules →Irving, TX
Dallas County
Irving regulates stormwater quality through its Municipal Separate Storm Sewer System (MS4) permit and the city's Stormwater Management Program. The Irving Code of Ordinances Chapter 34 (Utilities) addresses stormwater discharge prohibitions. Construction sites disturbing one or more acres must obtain a Texas Pollutant Discharge Elimination System (TPDES) permit and implement a Stormwater Pollution Prevention Plan (SW3P).
View full Irving rules →Key Facts Comparison
| Fact | Grand Prairie | Irving |
|---|---|---|
| Review | Drainage plans for all permits | - |
| Earthwork Permit | Required before clearing | - |
| Standards | City Drainage Design Manual | - |
| Department | Stormwater & Engineering | - |
| Code Section | - | Irving Code Ch. 34 — Utilities |
| Permit Type | - | MS4 TPDES permit |
| Construction Threshold | - | 1+ acre requires SW3P |
| Illicit Discharge | - | Prohibited to storm drain system |
| Enforcement | - | Irving Stormwater Management |
Highlighted rows indicate differences between cities.
Grand Prairie FAQ
What stormwater permits are needed in Grand Prairie?
Clearing and Grubbing/Earthwork permits are required. All development drainage plans are reviewed by the Stormwater and Engineering Department.
What standards apply?
The City Drainage Design Manual and city erosion control standards. All development must comply.
Irving FAQ
Can I wash my car and let water flow into the gutter?
Residential car washing on a pervious surface is generally acceptable. However, discharging water with significant soaps, chemicals, or pollutants to the storm drain system is prohibited under Irving's stormwater ordinance.
What is a SW3P?
A Stormwater Pollution Prevention Plan (SW3P) is required for construction sites disturbing one or more acres in Texas. It outlines erosion controls, sediment barriers, and inspection schedules to prevent pollutants from entering stormwater runoff.
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