# 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 Lower zone (Q1 to Q2 excluded), any water temperature; maximum permissible error is 5 %; scope or member state option is MI-001. Volume measurement, lower zone, recorded from its source on 2026-08-05.

- **Instrument type:** Water meter
- **Annex:** III
- **Accuracy class:** N/A (single class)
- **Condition:** Lower zone (Q1 to Q2 excluded), any water temperature _(our reading, not quoted from the source)_
- **Maximum permissible error:** 5 % _(verified: appears in the quote below)_
- **Scope or member state option:** MI-001. Volume measurement, lower zone. _(our reading, not quoted from the source)_

## What the source says

> The MPE, positive or negative, on volumes delivered at flowrates between the minimum flowrate (Q 1 ) and the transitional flowrate (Q 2 ) (excluded) is 5 % for water having any temperature.

## 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/).