§ 52.09  ACCURACY REQUIRED.
   (A)   A meter shall be considered accurate if when tested it registers not to exceed 2% more or 2% less than the actual quantity of water passing through it.
   (B)   If a meter registers in excess of 2% more than the actual quantity of water passing through it, it shall be considered “fast” to that extent. If a meter registers in excess of 2% less than the actual quantity of water passing through it, it shall be considered “slow” to that extent.