Tier 4


The US Environmental Protection Agency’s (EPA) Clean Air Act sets out emission reduction standards for diesel engines. The standards demand a reduction in the six common criteria pollutants – particulate matter (PM), ozone, sulfur dioxide, nitrogen oxides (NOx), carbon monoxide and lead. Implementation of the standards has occurred in stages, or tiers, with the deadline for compliance under the final stage – Final Tier 4 (FT4) – now looming.

Diesel engines in every industry, in every application, from large-scale marine engines to small landscape equipment engines, are subject to these regulations. While deadlines are contingent on engine size, FT4 engine requirements will be fully implemented for all off road diesel engines by the end of 2018. 

Whether you work in construction, mining, municipal wastewater or at an industrial plant, the emission reduction technologies on Final Tier 4 (FT4) diesel engines for portable pumps are no doubt on your mind. Xylem is here to help. 

To learn more, click here to download our Field Guide. In this guide, our experts explain how we balance diesel power generation with maintenance efficiency, safety and environmental responsibility to continue our commitment to meet peak performance and a green industry.