Decatur City Council Approves Water Source Study

The city moves to evaluate the sustainability of local water supplies to support ongoing industrial development needs.

Updated on Oct. 29, 2026 in Utilities

Bold flat-color editorial illustration of industrial water piping, evoking the sustainability of municipal water infrastructure. — The Decatur City Council approved a $72,948 contract with the University of Illinois to study sustainable water yields for future industrial growth. AI Illustration. Upload story photo >

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Should cities prioritize industrial growth over resident water conservation during drought conditions?

Decatur City Council has approved a $72,948 contract with the University of Illinois Board of Trustees to conduct a comprehensive water source study. The Illinois State Water Survey will lead the research, which aims to ensure long-term water availability for the city.

Why it matters

The study aims to determine the sustainable yield of current water sources to effectively support economic development and industrial growth. With corn and soy milling accounting for 60% of total usage, securing stable water access remains critical for the local economy.

The city pumped 456 million gallons from its DeWitt wellfield during the 2025 drought, successfully keeping Lake Decatur levels four inches higher than they would have been otherwise. Corn and soy milling operations currently consume 60% of the city's total water output.

The players

Decatur City Council

This is the primary legislative body responsible for governing the city of Decatur and managing its public utility contracts.

University of Illinois Board of Trustees

This governing body oversees the University of Illinois system, which includes the research institutions conducting this water survey.

Illinois State Water Survey

As a division of the Prairie Research Institute, this organization provides scientific data on the water resources of Illinois.

The details

The Illinois State Water Survey will evaluate the yield, costs, and community impacts of current sources, including Lake Decatur, the DeWitt County wellfield, and a site near Harristown. The city previously relied on the Mahomet Aquifer to maintain water levels during drought periods.

In 1988, a significant drought prompted city leaders to purchase land for water resources.
In November 2025, Decatur residents were asked to conserve water due to drought conditions.
On October 19, 2026, Decatur City Council approved the water study contract.
By May 2027, the water source study is expected to be completed.

Market Landscape

The city’s reliance on intensive water users like the corn and soy milling industry mirrors broader Midwestern municipal strategies to balance agricultural sector needs with residential demand. This study marks a return to resource planning strategies first implemented following the 1988 regional drought.

Residents may face future water management policies or conservation requirements based on the final findings of this multi-year study. The results will dictate how the city balances industrial water demand with the needs of local households and taxpayers.

The takeaway

Securing a reliable water supply is essential for maintaining the city's heavy reliance on the corn and soy milling sector. Residents should prepare for evolving water usage policies as the city works to balance industrial output with environmental sustainability.