Sprinkler System Water Pressure Calgary โ€” Too High, Too Low, and How to Fix

Water pressure problems cause more Calgary irrigation failures than any other single factor. Calgary Water delivers municipal pressure between 65-85 PSI โ€” which is actually too high for many residential irrigation systems (most are designed for 40-55 PSI). This guide explains how pressure affects your system and what to do.

Pressure Symptoms and Fixes โ€” Calgary Irrigation

Problem Symptom Cause Fix
Too-high pressure Heads mist (atomize), fogging effect Calgary muni pressure 65-85 PSI, system needs 40-55 Install pressure regulator ($80-$200)
Too-high pressure Heads blow off, fittings pop Pressure surge or no regulator Install PRV or zone regulators
Too-low pressure Heads barely pop up, weak spray Too many heads on one zone, partially closed shutoff Reduce heads per zone or open shutoff fully
Pressure varies by zone Some zones strong, others weak Unbalanced zone design or partially closed valve Zone flow control adjustment or re-design

Calgary tip: J.G. Irrigation installs pressure-regulated spray heads (which have a built-in 30 PSI regulator in the body) on all new Calgary systems โ€” eliminating the misting problem without a separate PRV at the backflow preventer. Call 587-433-4795 for a pressure assessment.

What is the correct water pressure for a sprinkler system in Calgary?

Most residential sprinkler heads are designed to operate at 30-45 PSI at the head. Calgary Water delivers 65-85 PSI at the meter โ€” too high for sprinklers without regulation. A pressure-reducing valve (PRV) set to 50-55 PSI before the irrigation connection, or pressure-regulated heads with built-in 30 PSI regulators, are the two solutions. J.G. Irrigation designs all new Calgary systems with appropriate pressure regulation. Call 587-433-4795.

Irrigation Pressure Assessment โ€” Calgary

Call 587-433-4795Book Assessment