ISO 9001 + Lean Six Sigma = Sustainable Improvement 

Many organizations run Lean Six Sigma as a separate program, often with high costs and short-lived results. Others may hold ISO 9001 certification but lack the right tools to drive sustainable improvement. The LSS System is different — we embed Lean Six Sigma’s proven problem-solving tools inside the ISO 9001 Quality Management System, creating a unified, organization-wide framework that delivers measurable results and sustains them.

Why LSS System Works

• ISO 9001 provides the system — a structured, organization-wide quality framework that defines processes, roles, and accountability.

• Lean Six Sigma provides the tools — DMAIC, statistical analysis, and root cause problem-solving methods to drive breakthrough improvements.

• Together, they deliver sustained change — improvements become part of the business process, not isolated projects.

Some companies prefer to jump straight into Lean Six Sigma without implementing an ISO 9001 system; however, we recommend establishing a strong ISO 9001 foundation first for better, sustainable results. Here is why:

Lean Six Sigma delivers big improvements — but only if built on stable, well-managed processes. That’s where the LSS System shines by integrating ISO 9001 quality management with Lean Six Sigma.

• Stable processes ensure improvement efforts focus on real problems, not chaos.

• Reliable data from ISO systems drives smart, effective decisions.

• Risk management prevents costly firefighting and supports proactive improvements.

• Certification builds customer trust and credibility.

• Together, they create a sustainable culture of continuous improvement — results that last, not just quick fixes.

Case Study: Metal Hose Manufacturer — Inventory & Lead Time Reduction

A mid-sized metal hose manufacturer was ISO 9001 certified but lacked a structured continuous improvement culture. By integrating Lean Six Sigma with their existing QMS, they:

• Streamlined production flow using Lean tools, reducing WIP inventory by 27%

• Used Six Sigma DMAIC projects to identify root causes of lead time delays

• Improved on-time delivery performance by 15% within 9 months

• Embedded visual management and daily standard work for sustained gains

Result: Faster improvements with strong process control, leading to reduced costs and higher customer satisfaction.

Lean Six Sigma is powerful, but without a solid foundation, results won’t stick. The LSS System gives you that foundation and maximizes your success.