For more than 35 years, Environmental Systems Service, Ltd. (ESS) has provided contract operations and maintenance services (O&M) to the water and wastewater treatment industry. Providing services to a diverse range of industries has offered the opportunity for ESS to research different treatment plans and systems, and to become familiar with many solution options. With such background and experience, ESS is able to address each contract on an individual basis, and work closely with the clients to develop the most efficient and cost-effective solution for their facility.

In addition to standard O&M services, ESS provides:

  • Process Evaluations
  • Process Modifications
  • Plant Personnel Evaluations 
  • Plant Upgrades
  • Development of Standard Operating Procedures
  • On-Call Operators for Emergency Response
  • Permit Monitoring
  • System Start-Up Services

With today’s ever-increasing restrictions on industrial water and wastewater discharges, it is critical that facilities remain in compliance. ESS has successfully helped clients bring facilities with previous permit violations into compliance and assist with updating site BMP plans. With trained operators, project managers for each site, and experience with many types of treatment systems, ESS is prepared to operate your water/wastewater treatment plant.

ESS Corporate Office
218 North Main Street
Culpeper, VA 22701

Toll Free: 1-800-541-2116
Phone: 540-825-6660
Fax: 540-825-4961


ESS Laboratories
500 Stone Street
Bedford, VA 24523

Phone: 540-586-5413
Fax: 540-586-5530

Office Hours

Monday – Friday: 8am – 5pm
(Emergency Service Available)