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Washington Metropolitan Area Transit Authority, Pollution, MD 2010

The Washington Metropolitan Area Transit Authority (WMATA) faced federal charges and ultimately pleaded guilty to negligent pollution of the Washington Suburban Sanitary Commission (WSSC) sewer system, according to court documents unsealed this week. The incident, stemming from a 2003 failure at WMATA’s Branch Avenue Rail Yard, resulted in the discharge of highly corrosive wastewater containing hydrofluoric acid.

On October 1, 2003, a critical neutralization system malfunctioned, allowing wastewater from hand-wash operations—measuring below a pH of 5.0—to flow unchecked into the WSSC’s sewer lines via an overflow pipe. For five days, between October 2nd and October 7th, WMATA continued to negligently discharge the corrosive substance, violating established federal pretreatment requirements designed to protect public wastewater treatment facilities and the environment. The extremely low pH levels posed a threat to the integrity of the sewer system and potentially impacted treatment processes.

The Environmental Protection Agency (EPA), in conjunction with the WSSC, investigated the incident and brought charges against WMATA on October 28, 2009. The charges specifically cited a violation of the Clean Water Act, specifically 33 U.S.C. 1319(c)(1)(A), which prohibits the negligent discharge of pollutants into waterways without proper permits or adherence to pretreatment standards. WMATA admitted to the negligent violation in its guilty plea.

Sentencing and Remedial Measures

On November 25, 2009, WMATA was sentenced to 18 months of probation and ordered to pay a total of $212,000 in fines and assessments. This included a $200,000 fine, plus a $125 special assessment. Beyond financial penalties, the court mandated quarterly inspections of the Branch Avenue Rail Yard by both the EPA and the WSSC to ensure future compliance. Crucially, WMATA was also directed to publicize details of the criminal violation internally to all employees, aiming to prevent similar incidents through heightened awareness and improved operational procedures.

Ongoing Concerns & Systemic Issues

While WMATA has reportedly complied with the terms of its sentence, the incident raises questions about the maintenance and oversight of industrial wastewater treatment systems within large public transit authorities. Experts suggest that aging infrastructure and potential cost-cutting measures could contribute to similar failures if preventative maintenance is not prioritized. The WSSC has stated that they are working with WMATA to review and improve pretreatment protocols at all WMATA facilities connected to the sewer system.

Key Facts

  • Defendant: Washington Metropolitan Area Transit Authority (WMATA)
  • Crime: Negligent discharge of corrosive wastewater in violation of the Clean Water Act
  • Location: Branch Avenue Rail Yard, Maryland
  • Year: 2003 (incident), 2010 (resolution)
  • Statute Violated: 33 U.S.C. 1319(c)(1)(A)
  • Penalty: $200,000 fine, $125 special assessment, 18 months probation, quarterly inspections, internal employee notification.
  • Pollutant: Wastewater with a pH below 5.0, containing hydrofluoric acid.

GrimyTimes will continue to follow this case and report on any further developments regarding WMATA’s environmental compliance and the effectiveness of the implemented corrective measures.


Source: EPA ECHO Enforcement Case Database

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