TS 5424

TS 5424 is a vocabulary standard that brings together definitions of terms used in the field of water quality. Standards of this kind support consistent language across laboratory reports, environmental monitoring work, and technical documentation, helping the same concept be understood in the same way in different contexts.

The technical role of water-quality terminology

Water quality is understood through a combined assessment of physical, chemical, biological, and in some cases microbiological characteristics. For that reason, clear terminology matters: it should be unambiguous whether a term refers to a parameter, a sampling result, or a property of the water body itself. Vocabulary standards help reduce confusion in environmental engineering, water management, treatment, monitoring, and scientific reporting.

What this document covers

• Definitions of terms related to water quality.
• Recognized as equivalent to ISO 6107-4:1984.
• Aims to harmonize the meaning of terms so that different uses of the same subject area remain consistent.
• Focuses on terminology rather than test methods, performance limits, or treatment requirements.

This TS 5424 edition has been withdrawn, but it remains relevant as a reference point for understanding the conceptual framework of water-quality language. In technical documents, consistent wording is especially important when interpreting sampling and analytical results, because it affects how data can be compared and discussed.

The definitions in this standard are intended to organize general water-quality vocabulary, so they are best read alongside current professional usage. That helps prevent the same concept from being interpreted differently by different institutions, laboratories, or reports.