BlueTech Chart of the Month – Number Comparison: US Municipal Treatment Plants by Flow

Stefan Urioc Posted by Stefan Urioc on Wednesday, April 30th, 2014 at 2:16 pm

BlueTech Chart of the Month shows the number of US municipal wastewater treatment plants. The chart compares the total number of wastewater treatment plants (with flows above 0.001 mgd) with the number of plants with flows above 10 mgd. As a general rule of thumb, industry experts agree that the economics for Anaerobic Digestion AD and combined heat and power CHP generally stack up more favourably in plants with flows over 10 mgd (corresponding to 100,000 P.E). This is a general rule, and as each plant is different the economics must be analysed on a case-by-case basis to investigate the financial viability of installing AD. Nonetheless using this as a guide, the map shows instances where, even though the total number of plants in some states is larger or smaller than in others, the situation reverses when looking at the number of plants with a flow greater than 10 mgd, indicating potential markets for anaerobic systems.

US Municipal Wastewater Treatment

The most notable example is the shift that takes place between Texas, which has the highest total number of wastewater treatment plants in the US, and California, which has the highest number of wastewater treatment plants with flows over 10 mgd. Another shift appears in the Midwestern states, Nebraska, Kansas, Oklahoma, Iowa, Missouri, which have a high total number of wastewater treatment plants, but have a small number of wastewater treatment plants with flows over 10 mgd compared to other states. The Eastern part of the US shows another shift, the chart showing a notable difference when comparing the total number of wastewater treatment plants with the number of wastewater treatment plants with flows over 10 mgd. This situation is seen especially in New York, New Jersey, Massachusetts, Virginia, and Florida.