Check your city’s current watering guidance before setting a schedule — it changes year to year.
Bountiful irrigation problems are usually slope problems wearing a different hat. When a single zone runs from the bottom of a bench lot to the top, the heads at the top are working against the elevation and the heads at the bottom are getting more pressure than they were designed for, and the result is a lawn that is dry in one band and soggy in another no matter how long the zone runs. Add irrigation systems that in the older neighborhoods may be several decades old, and mature trees whose roots have had forty years to find the laterals, and most of what we get called about here is infrastructure rather than programming.
Water pressure drops as water climbs. Every foot of elevation gain costs pressure at the head, so a zone that spans a real slope delivers noticeably less water at the top than at the bottom. The visible result is the pattern homeowners describe as the system not covering: brown at the top of the slope, saturated at the bottom, and running the zone longer makes the bottom worse without fixing the top.
The fixes are specific rather than general. Pressure-regulating heads even out the delivery across the zone. Matched-precipitation nozzles make sure heads of different arcs put down water at the same rate. Where the elevation change is large, splitting the slope into separate zones top and bottom is the real answer, because it lets each run for the time it actually needs.
Scheduling helps too, and it is free. Three short cycles with soak time between them put the same water down with far less running off a slope than one long cycle does. If a Bountiful slope is losing water down the driveway, cycle-and-soak is the first thing to try before anybody digs.
On a sloped property, when a zone shuts off, the water left in the pipe runs downhill and out through the lowest head on the line. That is low-head drainage, and it is why the lowest part of a bench lawn can be waterlogged while the rest of it is fine. It is not a leak and it is not a valve failing to close; it is gravity doing what gravity does.
The remedy is check valves — either heads with built-in check valves or in-line checks on the lateral — which hold the water in the pipe instead of letting it drain out at the bottom. It is a modest fix with an obvious result, and it also means the zone pressurizes faster at the next start because the pipe is already full.
The reason it matters beyond a wet patch is what the standing water does over years. A soggy area at the foot of a slope next to a foundation, a driveway or a retaining wall is a drainage problem with consequences, and it is worth dealing with as a structural issue rather than a lawn complaint.
In the established parts of Bountiful an irrigation system may date back several decades, and over that span the pipe materials, the fittings and the wiring conventions all changed. A system that has been repaired piecemeal for thirty years is often a mix of generations spliced together, which is why a leak in one place is frequently followed by a leak somewhere else within the same season.
Two things make a real difference on an old system. The first is finding out where everything is: valve box locations, how many zones there actually are, and whether any zones have been abandoned in place. The second is wire condition, because a decaying splice buried in soil is the most common cause of a zone that works intermittently and the hardest to find if nobody knows where to look.
Mature trees are the other factor. Roots do not puncture pipe so much as surround and crush it, and they go where the water is — which on a lawn means along the irrigation laterals. A repair near an established tree needs to account for the roots rather than cutting through them, and that is a conversation worth having before a trench is opened.
Because a single zone spanning a real elevation change delivers less water at the top than the bottom — every foot of climb costs pressure at the head — so running it longer only makes the bottom worse. Pressure-regulating heads and matched-precipitation nozzles help, splitting the slope into separate top and bottom zones fixes it properly, and cycle-and-soak scheduling costs nothing and reduces runoff immediately.
More likely low-head drainage. On a slope, when the zone shuts off the water left in the pipe runs downhill and exits through the lowest head on the line. Check valves — either in the heads or in-line on the lateral — hold the water in the pipe and stop it. Worth fixing beyond the wet grass, because standing water at the foot of a slope next to a foundation or retaining wall causes real damage over time.
On an older system the usual culprit is a wire splice that has decayed in the soil, which makes and breaks contact depending on moisture and temperature. It is the most common cause of an intermittent zone and the hardest to find without knowing where the valve boxes and splices are. Establishing what is actually buried — zone count, box locations, abandoned zones — pays for itself on a system that has been repaired piecemeal for decades.
Describe the symptom and we will match you with an irrigation contractor who traces the actual cause before replacing anything.
Get an Irrigation Pro OutA rough description is plenty — we will follow up to narrow it down before anyone comes out.
