City of Colleyville - Drainage Department FAQs

Drainage Department FAQs

Stormwater discharges are generated by runoff from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events that often contain pollutants in quantities that could adversely affect water quality.

Most stormwater discharges are considered point sources and require coverage by an NPDES permit. The primary method to control stormwater discharges is through the use of best management practices. These practices inlcude:

Maintenance and Inspection of Facilities
Storm inlets and outfall facilities are inspected twice a year before the projected heavy rain season (normally March and August). Debris is removed from inlet boxes and any repair work necessary is scheduled to be accomplished as soon as practical. During routine inspections the department also does water quality testing at the outfall source. This data is collected, and an annual report is submitted to the Texas Commission of Environmental Quality.

Storm Drain Marking Program
The storm drain marking program is part of the city's public education and outreach method for storm water pollution. We have the assistance of our homeowner associations in the installation markers on the storm drain inlets citywide. Our goal is to install 100-200 markers per year for the first five permit years to be in compliance with our MS4 Storm Water Permit.

Street Sweeping Program
The city is divided into four quadrants or zones so every curb street in the city can be swept each month.

West Nile Virus Program
West Nile (WN) virus has emerged in recent years in temperate regions of Europe and North America, presenting a threat to public, equine, and animal health. For information on the city's mosquito control program, West Nile Virus, and control measures that can be instituted by homeowners, click here.

Thursday, July 24, 2008