WE AT METRO are leaders in controlling water-borne infections in building environments. Metro delivers comprehensive programs that promote safer building environments and responsible working conditions for the benefit of building engineers, hospital and healthcare managers, and the general population. All programs and services are tailored to meet the specific and varied needs of diverse workplace environments. As a result, Metro’s environmental water infection control programs are extremely comprehensive. The Metro Group provides environmental cleaning and sanitation services for both domestic and HVAC water systems to ensure safe water and reduce risk factors of proliferation of Legionella sp. and other pathogenic organisms. We also provide environmental care consulting, disinfection equipment and water hygiene quality monitoring and control services.

Metro has brought together a wide range of complementary product and service offerings to yield the most comprehensive water care program in the industry. Metro provides:

– Cooling system assessments
– New construction water treatment
– Reverse osmosis
– Inspections
– Environmental consulting
– Water disinfection
– Potable water testing and cleaning
– Microbiological testing
– Cooling tower cleaning
– Disinfection programs
– Domestic water quality compliance programs
– Chlorine Dioxide treatment regimens
– Laboratory services
– Green water treatment services
Legionella sp. testing, control, and treatment

Our programs help reduce the risk of cooling tower failure and bring cooling systems into compliance with OSHA guidelines. The following links are relevant reference sources:

New York City Health Code and Building Codes

Includes links to:

NYCH Code 141.03 (water tanks)
NYCH Code 141.05 (system flushing and record keeping)
NYCH Code 141.07 (water treatment permits)
NYCB Code P107.8 (house and suction tanks)
NYCB Code P107.26 (temperature regulations)
NYCB Code P107.27 (potable water system upstart)

Information Regarding the OSHA ACT 1970:

Currently, there are no specific OSHA standards or directives for Legionnaire’s Disease. However, OSHA has issued citations for violations of gross contamination by Legionella sp. in poorly maintained water systems. This code discusses:

Employer duties
Employee duties
Compliance regulations
Penalties for violations

National Drinking Water Standards

Provides the standards for drinking water. Primary Standards (PS) are legally enforceable standards, designed to protect public water systems and reduce risks to public health. Secondary Standards (SS) are guidelines regulating contaminants that may cause skin or tooth discoloration that may affect taste, odor, color, or public acceptance. They may be legally enforceable.

OSHA Technical Manual, Section lll: Chapter 7 (Legionnaire’s Disease):

Includes subsections on:

Cooling tower water systems
Frequency of cleaning
Wisconsin Protocol
Record keeping
Domestic hot water systems
Domestic cold water systems
HVAC systems

ASHRAE Guideline 12-2000, Minimizing the Risk of Legionella Associated with Building Water Systems:

This guideline is intended for use with non-residential buildings and centralized systems in multifamily residential buildings. In addition, this guideline is intended for use with ships, cooling towers, fluid coolers, evaporative condensers, whirlpools, heated spas, waterfall systems, misters, air washers, humidifiers, and metalworking systems. It discusses recommended treatment and monitoring for Legionella sp.