- Brazos River Authority
 - Develops and distributes water supplies, provides water and wastewater treatment, monitors water quality, and pursues water conservation through public education programmes. - Coastal Bend Bays and Estuaries Program (CBBEP)
- Local nonprofit organisation dedicated to protecting and restoring bays and estuaries in the 12-county region of the Texas Coastal Bend.
- Earthwave Society
- Educates people about the prudent utilization of our planet's natural resources through television and video.
- Ecology Action of Texas
- Environmental organisation operating a network of recycling centres in the Austin area.
- Endangered Species Media Project (ESMP)
- Producers of art shows, both professional and youth, illustrated books, and nature and museum tours for at-risk youth in Texas.
- For The Love Of The Lake
- Dedicated to making White Rock Lake Park a cleaner, more pleasent environment.
- Houston Audubon Society
- Works for the thoughtful conservation of the earth's natural resources by educating people to the value of the natural world.
- Lower Colorado River Authority (LCRA)@
- San Marcos River Foundation
- Dedicated to the conservation and preservation of the San Marcos River.
- Tarrant County Corporate Recycling Council
- Corporate recycling council advocating the reuse, reduction, and recycling of goods.
- Wetland Habitat Alliance of Texas
- Dedicated to the preservation, restoration, and creation of wetland habitat.
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