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Circuit Rider Program
Through Oregon's Drinking Water State Revolving Fund (DWSRF), contracts have been established with drinking water Circuit Riders to provide on-site technical services for community water systems serving populations under 10,000, as well as not-for-profit transient and non-transient water systems. For these water systems, services are free.

Types of Services and Assistance
These services are designed to address short-term operational problems and are limited to 10 hours per issue (unless otherwise approved by Drinking Water Services management staff). Types of services and assistance include (but are not limited to) the following:
  • Jar testing assistance
  • Coagulant dosage optimization
  • Corrosion control implementation
  • Chemical feed math instruction
  • Turbidimeter calibration
  • CT tracer studies
  • Chemical feed pump calibration
  • Filter troubleshooting
  • Reporting and record keeping
  • Sampling requirements
  • Valve adjustments
  • Minor changes to improve treatment and operation
  • Funding application assistance
  • Financing options and strategies
  • Pump sizing
  • Cross-connection assistance
  • Sampling plan assistance
  • Storage/distribution problems
  • Supply problems and water rights
  • Research/investigation of alternatives
  • Recommendations for surface water treatment
  • DBP reduction
  • Filter media replacement
  • Filter backwash rule compliance
  • Disinfection assistance
  • Well repair/abandonment assistance
  • Stage two monitoring requirements

Additional Services Available
When recommended or required by Oregon Health Authority (OHA), the Consultant shall assist water systems with data collection, which may include the physical collection of source samples, associated with the evaluation of Groundwater Under Direct Influence (GWUDI) rule and Bank Filtration (i.e., alternative treatment technology). The Consultant shall provide technical assistance regarding additional treatment techniques options to be installed if a GWUDI determination results in a source being subject to the Surface Water Treatment Rule.

Surface Water
When recommended or required by OHA, services also include assisting water systems using surface water with their sampling protocol for the Long Term 2 Enhanced Surface Water Treatment Rule, conducting Cryptosporidium source water sampling as required, performing initial bin classification and providing technical assistance regarding additional treatment modalities to be installed, if required by initial bin classification.

Contact the Circuit Rider
For communities utilizing surface water or groundwater, the circuit rider is HBH Consulting Engineers, Inc. To contact, please call Robert Henry at 503-554-9553 or 866-669-6603, or email

More Information
Additional information about the SDWRLF can be found at Business Oregon's Infrastructure Finance Authority Web site. For more information about Circuit Riders and DWSRF, please contact Drinking Water Services.