Wastewater Department

The Wastewater Treatment Plant (WWTP) is responsible for the collection and treatment of domestic and industrial wastewater within the City of Diboll. We are staffed by two operators and one supervisor. 

The plant was expanded in 2000 from 1.098 million gallons per day capacity to 2.0 millions gallons per day. The city added two clarifiers, an additional chlorine contact chamber, raised the walls on the race track, replaced two old lift stations and did some collection system repairs.

Monthly, the City of Diboll WWTP must report the quality of the effluent, i.e. the water leaving the plant, to the Texas Commission on Environmental Quality (TCEQ). The standard is set by the TCEQ.

Permit requirements:

  • 10 CBOD
  • 2.0 Nitrogen Ammonia
  • 15 TSS


Permitted flow is 2 million gallons per day with an 8 million gallon 2 hour peak. Average annual flow is approximately 650,000 gallons per day.

The City of Diboll WWTP is also capable of recycling its effluent. It can be used at the treatment plant as process water or wash water. It can also be used by Temple Inland, Inc. as cooling water or process water at its facilities.

City of Diboll
Wastewater Treatment Plant
709 Corrine Drive
Diboll, TX 75941
936-829-4431