Client Waco Metropolitan Area Regional Sewerage System

Bull Hide Creek Wastewater Treatment Plant

Waco, TX

LAN provided engineering design services for this greenfield site 1.5-mgd wastewater treatment plant. All engineering services were provided in-house, including civil, structural, mechanical, electrical, architectural, and instrumentation design.

The A2O process for Biological Nutrient Removal (BNR) was incorporated to achieve the permitted effluent concentration limits. A secondary, alum-based chemical feed system was also provided to ensure permit compliance for phosphorus.

Other design components included an influent lift station, headworks structure equipped with an automated fine screen, washer compactor, manual bar screen, grit removal system and grit classifier, secondary clarifiers, RAS pump station, WAS/scum pump station, tertiary cloth media filtration, and UV disinfection. The design also called for biosolids generated at the plant to be thickened to approximately six percent through the use of a Rotary Drum Thickener (RDT), and subsequently hauled to the Waco Metropolitan Area Regional Sewerage System Central Wastewater Treatment Plant for digestion and dewatering. The project also includes 16,960 LF of sewer interceptor and future reuse pipeline.

LAN selected high speed turbo blowers to provide aeration and installed them adjacent to the above ground concrete aeration basins which acted as sound-reducing walls to reduce noise impact. In addition to reducing noise, special attention was placed on minimizing lighting and odors. The plant was designed with a reduced profile and includes a berm to minimize visual impacts. In addition, LAN evaluated various forms of odor control at the headworks and influent lift station, including absorption and biofilter units, to minimize odor impacts on the surrounding community. Adsorption units were ultimately selected and installed.

At a glance

$10 million construction

New greenfield site

1.5 MGD capacity

45 manholes (interceptor design)

100% of engineering services provided by LAN

16,960 LF of sewer interceptor


Concrete aeration basins are utilized as sound-reducing walls to minimize noise impacts of high-speed turbo blowers

Designed with a reduced profile and berms to minimize visual impacts

Odor control measures include adsorption units


Construction Mgmt & Inspection



Planning & Modeling

Wastewater Treatment


The plant's design takes into account local wastewater treatment needs for the next 25 years.


Waco Metropolitan Area Regional Sewer System (WMARSS) is a joint wastewater treatment effort by the Cities of Bellmead, Hewitt, Lacy Lakeview, Lorena, Robinson, Waco, and Woodway.


Dr. Pepper was invented in Waco, Texas in 1885.