Indiana lawmakers introduced Senate Bill 4 on April 2, 2025, aiming to regulate the construction of long haul water pipelines within the state. The bill seeks to address concerns over water resource management, particularly in relation to projects that may impact the Great Lakes-St. Lawrence River basin.

The primary provision of Senate Bill 4 prohibits the construction of long haul water pipelines after June 30, 2025, unless a water utility obtains a certificate of public convenience and necessity from the Indiana Utility Regulatory Commission. This requirement is designed to ensure that any new pipeline construction is justified by public need and does not adversely affect local water resources.

Key definitions within the bill clarify what constitutes a "water utility" and a "withdrawal source," encompassing various types of public and private entities that provide water services. The bill also outlines the process for utilities to apply for the necessary certificates, which must detail the purpose and necessity of the proposed pipelines.

Debate surrounding Senate Bill 4 has highlighted concerns from environmental groups and local communities about potential risks to water quality and availability. Critics argue that the bill may not go far enough to protect vital water resources, while supporters contend that it strikes a necessary balance between infrastructure development and environmental stewardship.

The implications of this legislation are significant, as it could reshape how water utilities operate in Indiana, particularly in areas where water scarcity is a growing concern. Experts suggest that the bill may lead to increased scrutiny of water projects, potentially delaying future developments while ensuring that public interests are prioritized.

As the bill progresses through the legislative process, stakeholders from various sectors, including environmental advocates and utility companies, are closely monitoring its developments. The outcome of Senate Bill 4 could set a precedent for water management policies in Indiana and beyond, influencing how states approach the intersection of infrastructure and environmental protection.