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Dallas Zoo Management, Inc.

Aquatic - Life Support Specialist


This position is responsible for the daily operation and maintenance of life support components and systems utilized by animals in aquatic feature habitats.


  • Collect data and complete water chemistry analysis for all aquatic support systems (LSS) in accordance with established timelines and procedures. Provides data interpretation of all water chemistry. Provides data interpretation of all water chemistry.
  • Conducts daily rounds of all filtration areas to inspect pumps, motors, generators, chillers, air handlers and other filtration equipment.
  • Log and report/communicate daily with curatorial/animal care staff with regard to LSS and water quality issues as they relate to animal health and exhibit/function issues.
  • Maintain efficient operation of backwash recovery system and water reclamation.
  • Works closely with co-workers to monitor and maintain nitrogen cycling in new and empty tanks, and to ensure all scheduled and unscheduled water changes, transfers and system-drop procedures are completed safely and efficiently.  This may include but is not limited to monitoring and performing the following analyses:  salinity, pH, temperature, ammonia, nitrite, nitrate, copper, sulfate, ORP, hardiness alkalinity, dissolved oxygen, phosphate, turbidity, chlorine, and other parameters as assigned by curators. 
  • Performs regular preventive maintenance, calibration, troubleshooting and repair to analytical instrumentation, probes and to mechanical equipment Conduct inspections, preventive maintenance, and repair of LSS equipment.
  • Use control systems to operate aquatic systems and monitor/record data.
  • Plan and execute related projects which may include installation, replacement, upgrade or refurbishing of equipment.
  • Utilize a work order system (FMX) to document repairs and maintenance on systems.
  • Recommend and maintain the stock of required spare parts, tools, and test instruments. 
  • Follow and maintain all safety policies and procedures.
  • Perform other duties as assigned.


  • Must have a high school diploma or GED. Candidates must have a minimum of two years’ experience operating and maintaining aquatic life support systems, a municipal water treatment plant, or a waste water treatment plant.
  • Thorough understanding of biological, mechanical, and chemical filtration systems including; ozone mechanics, ORP, chlorine injection, biological filters, rapid sand filters, and the ability to trouble shoot these types of systems required.
  • Must have the ability to diagnose and repair LSS equipment including but not limited to ozone generators, pumps, heat exchangers, air compressors, fractionators, UV Sterilizers, control systems, chemical injection, and filtration systems. 
  • Knowledge of spectrophotometers (e.g. HACH) and multiprobe mini-sonde (e.g. hydrolab, YSI) preferred
  • Maintain appropriate working knowledge of all life support systems for DZM so that the proper action can be taken to restore any abnormality.
  • Ability to troubleshoot and repair aquatic systems and water related equipment.
  • Ability to use control systems to operate aquatic systems and monitor/record data.
  • Must have a CPO, an AALSO certification is preferred.
  • Must be proficient in the use of proper testing equipment, hand tools and shop equipment.
  • Strong demonstrated knowledge of water chemistry and monitoring in an aquarium environment.
  • The position involves considerable physical exertion, such as regular climbing of ladders, lifting of heavy objects (up to 75 pounds) on a highly frequent basis and/or assuming awkward positions for long periods of time.
  • Must have a valid Texas driver’s license and reliable transportation.
  • Must be able to work nights, weekends, holiday, and have a flexible schedule.


While performing the duties employee is regularly exposed to wet or humid conditions; work near moving mechanical parts; work in high, precarious places; underground vaults; outdoor weather conditions. The employee can be exposed to fumes; airborne particles; moderate to loud noise levels.

How to Apply

Please follow this link to apply:

Dallas Zoo Management, Inc.
650 S. R.L. Thornton Frwy
Dallas, TX 75203

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