New Jersey legionella compliance has taken a major step to reduce Legionnaires’ disease outbreaks with the passage of P.L. 2024, c.66. This legislation targets sources of Legionella—from cooling towers and whirlpools to potable water systems—and mandates stricter water management programs. In this article, we’ll break down the key points of the new law, explain who’s affected, and outline how to stay compliant.
Legionnaires’ disease cases in the state have spanned multiple sources. Cooling towers, plumbing fixtures, and other water systems that produce aerosols have all been linked to infections. With no federal law governing Legionella prevention, New Jersey decided to enact its own rules to protect public health.
Effective March 2026
Effective Date: September 12, 2025
By December 2026, certain facilities must have a water management program (WMP) that follows ASHRAE 188 guidelines. This includes:
Under P.L. 2024, c.66, buildings subject to the new rules must:
Non-compliance can be costly. Owners face fines up to $2,000 for a first offense and $5,000 for subsequent ones. If a violation leads to serious injury or death, penalties can reach $10,000. These measures underscore the high priority New Jersey places on preventing Legionnaires’ disease.
Experts recommend that building owners and managers monitor updates from the Department of Health and DEP. As other states watch New Jersey’s approach, more legislation could follow nationwide. Staying proactive is crucial to avoid fines, protect occupants, and ensure water safety.
With cases of Legionellosis on the rise, New Jersey’s new legislation offers a clear path to safer water systems. By adopting ASHRAE 188 best practices, maintaining disinfectant residuals, and implementing robust water management programs, property owners and utilities can significantly reduce Legionella risks. Act now to meet these deadlines and keep your facility on the right side of compliance. If you’re unsure where to start, consult water treatment experts or local health authorities for guidance.
Nick Piskura is the Marketing and Web Development Specialist at ChemREADY who utilizes expertise in digital marketing strategies to provide knowledgeable insights in each segment of our business. Nick provides insights through web development and multimedia resources that support ChemREADY’s full range of services, including Legionella management, ANSI/AAMI ST108 compliance, boiler and cooling tower treatment, wastewater processing, and industrial water quality solutions.
