State of the Art Water Treatment with Management from the Cloud

Aug. 12, 2020

The Client

Roxborough Water & Sanitation District (RWSD) serves a fast-growing area located SW of Denver, Colorado, servicing 4,000 customers and treating up to 6 MGD of drinking water.

The Client’s Needs

RWSD was operating a facility originally constructed in 1958 that was no longer structurally repairable, could not keep up with the water demand, and too costly to repair. A new solution was needed, not only to provide high quality drinking water, but also to bring management further in step with the digital future.

The Solution

RWSD selected ACTIFLO®, a high-rate water clarification process, as the heart of the new treatment facility based on its ability to remove over 99% of turbidity, iron, discolorations and the other contaminants from the raw water source.

The new treatment facility is capable of producing 6 MGD per day and the (3) ACTIFLO® units themselves can treat up to 12 MGD. The small process footprint also allowed RWSD to save an estimated 30% on the total installed cost. The new RWSD facility has the distinction of being the first CO drinking water facility to receive 100% of their primary disinfection credits using UV, allowing for a reduction in disinfection by-products.

RWSD’s ability to effectively manage their system is enhanced by the use of the AQUAVISTA™ Portal and Assist platforms, Veolia’s smart water management systems providing greater insight into system performance and access to Veolia’s process expertise with a cloud-based solution.

The Benefits

  • ACTIFLO® saves 30% cost over conventional treatment
  • AQUAVISTA™ allows for proactive management
  • Roxborough gains deeper understanding of their process

Process Description

ACTIFLO® utilizes the combination of coagulation, flocculation and sedimentation using microsand as a seed for floc formation. The microsand provides surface area that enhances flocculation and acts as a ballast to enable rapid settling of coagulated material. 

With AQUAVISTA’s advanced remote monitoring from any web-enabled device, not only does RWSD have more visibility into their plant, but they can tap into the expertise within Veolia to help keep things running smoothly. The AQUAVISTA™ Portal provides a user-friendly dashboard to view and compare process trends, track maintenance tasks, access O&M manuals and maintenance videos and generate customizable reports. With AQUAVISTA™ Assist, a Veolia Process Engineer maximizes the value of such easy access to data and automated reporting by providing regular reviews and recommendations.


The ACTIFLO® system has performed extremely well, with effluent turbidity ready for final filter polishing of < 2.0 NTU and operation and management of the facility has been further enhanced through the AQUAVISTA™ Portal and Assist services. “I like the reports, they are very useful from a management standpoint. I have taken the information provided in the reports and implemented some operational changes and strategies that should help rotate the equipment on a more even basis.” Mike Marcum, Director of Operations.

Editor's Note: Scranton Gillette Communications and the SGC Water Group are not liable for the accuracy, efficacy and validity of the claims made in this piece. The views expressed in this content do not reflect the position of the editorial teams of Water & Wastes Digest, Water Quality Products and Storm Water Solutions.

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