TS 5423

TS 5423 is a vocabulary standard for water quality terminology. It establishes consistent definitions for the terms used when describing the physical, chemical, and biological condition of water, helping professionals use the same concepts in laboratory reporting, environmental monitoring, and technical communication.

What this vocabulary standard addresses

The subject of the standard is the definition of water-quality terms, not test methods or acceptance limits. In practice, that means it serves as a common reference for the words and concepts used in water assessment, water treatment, environmental protection, and health-related documentation, so that similar terms are interpreted in the same way across different contexts.

In general technical usage, water-quality vocabulary often relates to dissolved substances, suspended solids, turbidity, pH, oxygen balance, pollutant loading, and ecological status. A vocabulary standard like this helps distinguish whether a term refers to a measured property, a water body condition, or a broader environmental concept, which is important when reading monitoring data, analytical reports, or regulatory-style documents.

• Provides a common terminology base for water-quality concepts.
• Supports consistent language in environmental engineering, monitoring, and analysis reporting.
• Focuses on definitions rather than prescribing procedures or numerical requirements.
• TS 5423 is treated as equivalent to ISO 6107-3:1985.