A common question from engineering and water companies is whether water and wastewater process development can qualify as research and development for the federal R&D tax credit under Section 41. The short answer is that water and wastewater process development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about treatment performance. Routine treatment operation generally is not qualified research. This page explains the framework in general terms. It is educational and is not individualized advice. For the foundational framework, see our page on qualified research.
When Process Development May Warrant Review
Water and wastewater process development may warrant review when the work involves a genuine technical uncertainty and a process of experimentation. Under the four-part test, the work must be for a permitted purpose, be technological in nature, be intended to eliminate uncertainty, and be conducted through a process of experimentation.
Common scenarios that may warrant review include:
- New treatment — evaluating alternative treatment approaches to resolve uncertainty about whether a new treatment can achieve the required water quality.
- New contaminant — testing alternative approaches to resolve uncertainty about whether a process can remove a new contaminant.
- New scale — evaluating alternative approaches to resolve uncertainty about whether a process can achieve the required performance at a new scale.
- Process optimization — testing alternative approaches to resolve uncertainty about whether a process can achieve a new performance target.
Routine Operation vs. Process Development
A central distinction is between routine treatment operation and process development:
- Routine operation — operating a treatment process using established methods and known parameters. There is no technical uncertainty. This is operation, not research.
- Process development — developing new treatment processes where there is a technical uncertainty about whether the process can achieve the required performance, and evaluating alternatives to resolve that uncertainty. This may warrant review.
Hypothetical Example
Consider a company that is developing a new wastewater treatment process to remove a new contaminant and is uncertain whether any available approach can achieve the required removal efficiency. The company evaluates alternative approaches, tests each, and systematically varies the approach to resolve the uncertainty. This systematic evaluation of alternatives may warrant review as qualified research.
By contrast, if the same company operates an existing treatment process using established methods, that is routine operation, not research.
This example is illustrative only and does not state that the activity definitely qualifies.
Documentation That May Help
Records that can help support process development claims include process development records identifying the uncertainty and alternative approaches, water-quality test results, and records of how results informed process decisions. For more, see our page on R&D tax credit documentation.
Key Takeaway
Water and wastewater process development may constitute qualified research when the work evaluates alternative approaches to resolve a technical uncertainty about treatment performance. Routine treatment operation generally is not qualified research. Because the distinction is fact-specific, professional review is appropriate before claiming the credit.