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

For Water meters, annex is Annex III (MI-001); condition is Q1 ≤ Q < Q2; maximum permissible error is ± 5 %, recorded from its source on 2026-08-05.

- **Instrument type:** Water meters
- **Annex:** Annex III (MI-001)
- **Condition:** Q1 ≤ Q < Q2 _(our reading, not quoted from the source)_
- **Maximum permissible error:** ± 5 %

## 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/).