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Article
Clean Water Grow: Go or No Go?
oikos case collection
  • Simon Ngawhika, Portland State University
  • Scott Marshall, Portland State University
Document Type
Article
Publication Date
1-1-2014
Subjects
  • Social responsibility of business -- Case studies,
  • Sustainable development,
  • Factory and trade waste -- Management,
  • Sewage -- Purification,
  • Sewage -- Purification -- Technological innovations
Abstract

The $43 billion US wastewater treatment industry is a landscape in which the high costs of capital construction and the need for economies of scale feature prominently. The US Environmental Protection Agency estimates that between 2004 and 2024, over $200 billion will need to be spent upgrading and expanding America’s wastewater infrastructure.

One significant challenge in maintaining treatment infrastructure is the build-up of struvite. Struvite accumulates inside treatment facility pipe networks, reducing capacity and increasing operating and maintenance costs. But discharging the components of struvite – the nutrients nitrogen and phosphorous – into the environment also has negative consequences. Concentrated amounts can cause significant harm to aquatic ecosystems.

Clean Water Services (CWS) is the public wastewater utility for Washington County, Oregon USA, providing sewage and stormwater treatment services to more than 500,000 homes and businesses. Responsible for the health and management of a public good – the 83-mile long Tualatin River – CWS is subject to regulations over the temperature and quality of the water it discharges into the natural environment.

This case follows Clean Water Services in its pilot test of a home garden fertilizer product that is linked to the environmental benefits and operational efficiencies gained through an innovative treatment technology. In 2009, CWS implemented a groundbreaking solution to the challenge of struvite; one that also had the potential to turn a waste stream into a revenue stream. An advanced 'nutrient recovery technology' removes the nutrients that form struvite and pollute the environment if discharged, recycling them into an effective, safe to handle garden fertilizer. In mid 2012, the CWS Board gave the green light to produce Clean Water GROW™, its own brand of fertilizer, and test its commercial viability in the local consumer market.

The case educates students on the challenge of finding innovative ways to operate and maintain wastewater infrastructure in the face of population growth and increased pressure on natural systems. It provides detail on the development and commercial pilot of the GROW fertilizer product, and the packaging, pricing and distribution options that were analyzed. It asks students to conduct the crucial steps of analyzing the implications of marketing mix options in terms of break-even quantity and return on investment, and recommending a 'go' or 'no go' decision to the CWS board.

Description

This case study was awarded 2nd place in the 2014 OIKOS Global Case Writing Competition - Corporate Sustainability.

Copyright © 2014 by the Authors. All rights reserved. This case was prepared by Simon Ngawhika and Scott Marshall as a basis for class discussion rather than to illustrate the effective or ineffective handling of an administrative situation. No part of this publication may be reproduced, stored in a retrieval system, used in a spreadsheet, or transmitted in any form by any means without permission.

This case is accompanied by a teaching note, available to faculty only. Please send your request to pdxscholar@pdx.edu.

The article can be found online at: http://oikos-international.org/publications/clean-water/

Persistent Identifier
http://archives.pdx.edu/ds/psu/16340
Citation Information
Simon Ngawhika and Scott Marshall. "Clean Water Grow: Go or No Go?" oikos case collection (2014)
Available at: http://works.bepress.com/scott-marshall/3/