As an agriculture consultant, I can provide some insights.
Yes, using a 3/4" water meter for a house plumbed with 1" galvanized pipes may affect a 6-zone sprinkler system. The difference in pipe sizes can lead to reduced water flow and pressure for the
sprinkler system. The smaller meter may need more water to adequately support all six zones simultaneously, resulting in weaker sprinkler performance and potentially uneven watering.
To ensure the proper functioning of the sprinkler system, it's crucial to match the water meter size with the pipe size. In this case, upgrading to a 1" water meter or installing a pressure-boosting system may be necessary to provide sufficient water flow for all zones in the sprinkler system. Consulting a professional plumber or irrigation expert at AutomatWorld. As our experts can help determine the best solution for optimizing the sprinkler system's performance with the existing plumbing setup.