Irrigation repair, drip conversion and yard drainage

The five things that drive a high water bill

When someone calls us about a bill that has doubled, it is almost always one of these, and four of the five are cheap to fix.

• A valve that is not closing fully, usually debris on the diaphragm. The zone weeps continuously and you never see it run.
• Broken or sunken heads spraying the sidewalk, the fence or a wall. Ten to twenty percent losses are typical and invisible during the day, because most systems run at 4 a.m.
• Overspray and mismatched precipitation rates: rotors and spray heads on the same zone, so one half of the lawn is drowned to keep the other half alive.
• A controller still running a January schedule in October, or a rain sensor that failed years ago.
• Excessive pressure. Above about 60 psi at the head, spray atomises into mist and drifts away. Pressure-regulating heads fix this for a few dollars each and typically cut zone usage by fifteen percent.

Retrofits worth doing

Converting spray heads to high-efficiency rotary nozzles is the single best value retrofit for a lawn. They apply water at a much lower precipitation rate in a thick stream instead of a mist, so almost nothing is lost to wind and evaporation and far less runs off clay soil. It is a nozzle swap, not a re-pipe.

Converting beds to drip is the other one. Shrub beds on spray heads waste water on mulch and leaves and encourage weed germination between plants. Inline drip tubing or point-source emitters put water at the root zone. Every drip zone needs a filter and a pressure regulator. Skipping those is why drip retrofits clog.

A weather-based smart controller ties it together. Rachio, Hunter Hydrawise and Rain Bird ESP-TM2 with a wireless weather link all work well. They adjust run times daily against local evapotranspiration and skip cycles when it rains. Real-world savings are usually fifteen to thirty percent, more if the old schedule was set once and never touched. Many local agencies offer a rebate on the controller itself.

Watering rules in North County

Most retail agencies in our area, including the Vista Irrigation District, Carlsbad MWD and the City of Oceanside, have permanent water waste rules independent of any drought declaration. In general terms that means no runoff onto hardscape or into the gutter, no irrigating within 48 hours of measurable rain, and restrictions on the time of day you can run spray irrigation.

Rules and any active day-of-week limits vary by agency and change with conditions, so check your provider's current page. What is consistent everywhere is the runoff rule, and the practical fix for it is cycle-and-soak: instead of one twelve-minute run, three four-minute runs thirty minutes apart. Clay soil here has a very low infiltration rate, and anything past the first four or five minutes is running down the driveway.

Drainage: where the water actually goes

We get 13 inches of rain a year and we get a lot of it in a handful of atmospheric river events. A yard that drains fine in a drizzle can put four inches of standing water against a slab in a real storm.

• French drains: perforated pipe in washed rock wrapped in filter fabric, for intercepting subsurface water and slope seepage. Fabric orientation matters; done wrong it silts up in two seasons.
• Catch basins and solid pipe: for surface water at low points, tied together and daylighted at the curb or the property line.
• Channel drains: at garage thresholds, patio edges and anywhere a slope runs at a doorway.
• Downspout tie-ins: the highest-value drainage work there is. Roof water dumped at the foundation is the cause of most of the wet-crawlspace and settling problems we see.
• Dry creek beds and swales: surface conveyance that looks like landscape rather than infrastructure, and handles far more volume than most people expect.

What a diagnostic visit looks like

Ninety minutes, flat rate, and you get a written findings sheet whether or not you hire us for the repair. We run every zone, map and photograph the head layout, pressure test at the point of connection and at the far head of each zone, locate buried valves with a wire tracer, and check the controller programme against current evapotranspiration for your zip code. If there is a leak, we find it before we quote the repair.