Drinking Water - Regulation - Control and Prevention of Waterborne Disease
HB0204 establishes a new set of drinking-water and public-health requirements aimed at preventing Legionella growth and other waterborne disease risks in Maryland’s public water systems and certain buildings. The bill requires suppliers of water to maintain minimum detectable disinfectant residual levels in active parts of public water systems, conduct regular residual testing, and comply with future regulations on nitrification plans, construction-related monitoring, and potentially stronger disinfectant or testing standards. It also directs the Department of the Environment to investigate failures to meet residual requirements and to create procedures for notices, reporting, and possible use of third-party investigators.
The bill further requires water suppliers to notify affected customers when disruptions in the distribution system could increase Legionella risk, and to report those disruptions to the Department within 24 hours. The Maryland Department of Health must investigate reported Legionnaires’ disease cases, test identified exposure points when appropriate, maintain a public registry of de-identified case data, and notify the Department of the Environment so water systems can be sampled and tested. Owners or operators of covered buildings must implement water management programs consistent with ASHRAE Standard 188-2018, and the Department of Health must launch a public awareness and consumer education campaign focused on Legionnaires’ disease prevention and vulnerable populations. The bill also requires annual reporting to the Governor and General Assembly on disease cases, violations, and possible further legislative recommendations.
HB0204 would amend the Environment Article by adding a new Part III on control and prevention of waterborne disease, while also expanding enforcement provisions and penalties for noncompliance. It changes the penalty structure so violations of the new waterborne-disease requirements are expressly enforceable, and it redirects penalties collected for violations of the new Part III to a special fund in the Maryland Department of Health rather than the Maryland Clean Water Fund. The bill would impose new operational, reporting, and notice duties on public water suppliers, new investigative and data-sharing duties on the Department of Health and the Department of the Environment, and compliance obligations on owners and operators of covered buildings.
The bill appears to be framed as a public-health and infrastructure-safety measure, with an emphasis on preventing Legionnaires’ disease and improving transparency around water-system disruptions. Because no committee transcript or vote record is provided, there is no direct evidence of floor or committee sentiment, but the bill text itself suggests a proactive regulatory approach intended to strengthen monitoring, notification, and disease investigation. The overall tone of the legislation is preventive and consumer-protective rather than punitive.
The main points of potential contention are likely to be the new compliance burdens and enforcement exposure placed on public water suppliers and covered-building operators. Water utilities may object to the minimum disinfectant residual requirements, frequent testing, mandatory notices, and rapid reporting obligations, especially where system conditions or treatment changes are complex. Building owners and operators may also view the required water management programs and disclosure obligations as costly or administratively burdensome. Another possible point of debate is the bill’s expanded public reporting and registry provisions, including de-identified case data and location information, which may raise privacy, implementation, or data-management concerns even though the bill attempts to limit identification of individuals.