Latest from FOX

Planning for the Future: Assessing and Replacing Sanitary Sewer Infrastructure

If you have concerns about your city’s infrastructure, you are not alone.  However, being in good company isn’t helpful when it comes to the everyday challenges of managing expensive infrastructure and facilities for your utilities. Sanitary sewer infrastructure doesn’t exist in isolation; it is a component of an entire system of conveyance and treatment. It […]

The Fate of Nutrients: How do Nitrogen and Phosphorus Affect Biosolids Production, Treatment, and Handling?

If you are a major municipal utility with average wet weather wastewater flows greater than one (1) million gallons per day, or a minor municipal facility planning to increase design loads, the letters N and P could greatly influence your treatment process, biosolids handing, and city budget. How? These letters represent nutrients present in wastewater […]

Life Cycle Cost Analysis

For Water and Wastewater Treatment Facilities, this Analysis Can Result in Lower Costs and Higher Quality Projects Undertaking large capital projects like water and wastewater treatment plants can be intimidating. These projects often involve large sums of money, long term financing, and increased rates to pay for the improvements. With a desire for fiscal responsibility, there […]

Is Reverse Osmosis the solution to your water quality problems?

Pilot testing may be the only way to answer this question. Over the past year, FOX Engineering assisted the Iowa communities of Grimes, Washington and State Center with pilot testing of reverse osmosis (RO) systems to determine whether this technology is a feasible option for providing their communities with safe, clean, drinking water. What is […]

Metals: You might need a Strategy for that too!

You’re hearing a lot of talk about Iowa’s Nutrient Strategy. If you haven’t already, you could receive your new NPDES permit in the coming months.  It may contain requirements for dealing with nutrients and many other things, not the least of which is metals. NPDES permits now incorporate stringent water quality standards for setting effluent […]

A Story about Copper: Water vs. Wastewater, Part 3

Last June (2014), we expanded on an earlier newsletter article (June 2013) regarding the extremely low limits for copper on many wastewater plant effluents. For more than five years, we have been working with IDNR staff to enable the utilization of the Biotic Ligand Model by POTWs with very low copper NPDES limits. The following […]

A Story about Copper: Water vs. Wastewater, Part 2

A year ago, we described a situation in New Hampton where the copper in the city’s drinking water, which is well below the recommended drinking water limit, will cause the wastewater effluent to violate its discharge permit. Now, as DNR is steadily re-issuing NPDES permits, it appears that New Hampton is not alone; a number […]

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