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Bill to curb Legionnaires disease wins broad technical support but utilities warn of costs
Summary
HB 204 would require minimum disinfectant residuals in public water distribution systems, mandated monitoring and ASHRAE‑188‑based building water‑management plans; public‑health experts and building owners backed the approach but utilities and building groups raised concerns about scope, testing capacity and potential treatment costs.
Delegate Nick Allen told the Environment and Transportation Committee that HB 204 is a technical, science‑based response to a rise in Legionnaires disease in Maryland and nationwide. "Legionnaires disease is now widely recognized as the deadliest waterborne disease in the United States," Allen said, adding that many cases are sporadic and tied to low disinfectant residuals or system disruptions.
The bill would require public water systems to maintain minimum disinfectant residuals across…
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