# Water meter — Accuracy classes and maximum permissible errors for trade measuring instruments (EU MID)

For Water meter, annex is III; accuracy class is N/A (single class); condition is After durability test, lower zone (Q1 to Q2); maximum permissible error is Variation not exceeding 3 % of metered volume; scope or member state option is MI-001. Durability test variation, lower zone, recorded from its source on 2026-08-05.

- **Instrument type:** Water meter
- **Annex:** III
- **Accuracy class:** N/A (single class)
- **Condition:** After durability test, lower zone (Q1 to Q2) _(our reading, not quoted from the source)_
- **Maximum permissible error:** Variation not exceeding 3 % of metered volume
- **Scope or member state option:** MI-001. Durability test variation, lower zone. _(our reading, not quoted from the source)_

## What the source says

> 3 % of the metered volume between Q 1 included and Q 2 excluded;

## Source

- https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32014L0032

Last verified: 2026-08-05. Review by: 2027-08-05.
Part of [Accuracy classes and maximum permissible errors for trade measuring instruments (EU MID)](https://referencesource.org/legal-metrology-accuracy-classes/).