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Koi Pros

Irvine pond builders, water feature care and leak repair

Irvine's master-planned communities have hundreds of HOA lakes, streams and entry fountains, and we service many of them alongside backyard ponds in Shady Canyon, Turtle Rock and Woodbridge.

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    Koi pond under a pergola with waterfall, lantern and koi, wide view
    Pergola koi pond, wide view
    Courtyard koi pond with river-rock edge, lilies and stucco wall
    Courtyard koi pond with river-rock edge
    Acrylic viewing window on a koi pond with waterfall, daylight
    Viewing window, daylight

    Pond and water feature conditions in Irvine

    Every pond, fountain and lake is a small ecosystem that answers to local conditions. These are the ones that shape how we build and service water features in Irvine.

    Tap water and fill water

    Irvine Ranch Water District delivers a blend of local groundwater and imported supply, and separately pipes recycled water for landscape irrigation. Recycled (purple-pipe) water is high in nutrients and must never be used to top off a pond or lake; several community lakes that take recycled makeup water fight algae for exactly that reason.

    Heat, evaporation and wind

    Mild coastal-inland transition: summer highs in the low-to-mid 80s, morning marine layer through June, hot stretches in September. Shady Canyon and Portola Springs run hotter and windier than Woodbridge or University Park.

    Soil, grade and excavation

    Deep clay across most of the master-planned villages, which holds water and heaves; expansive-soil lots need concrete shells reinforced accordingly or liner ponds with free-draining bases.

    Predators and wildlife

    Great blue herons, night herons and egrets nest around the San Joaquin Marsh and the Woodbridge lakes and raid backyard ponds within a mile; raccoons are dense in the greenbelts; coyotes along Bommer and Shady Canyon.

    Raccoon on a wooden deck edge
    Raccoons work shallow shelves and skimmers at night

    Leaf and debris load

    Street trees are mostly evergreen (eucalyptus, pine, camphor, ficus), so debris is year-round rather than seasonal. HOA lakes collect turf clippings and fertilizer runoff.

    Large koi in clear water against a stone pond wall
    Koi in clear water

    Water features we build and service in Irvine

    The highest concentration of HOA lakes, streams and entry fountains in the county (Woodbridge, Northwood, Turtle Rock, Westpark, Great Park neighborhoods), plus estate koi ponds in Shady Canyon and Turtle Rock and corporate campus water features around the Spectrum and UCI.

    Neighborhoods and communities we work in: Woodbridge, Turtle Rock, Shady Canyon, Northwood, Westpark, University Park, Portola Springs, Great Park Neighborhoods, Quail Hill.

    Residential pond, waterfall and fountain services

    Design and construction

    Scheduled care

    Repair and water loss

    Commercial water feature services in Irvine

    Property types

    Lake and large-feature programs

    How Irvine service is scheduled

    Irvine is inside our Orange County home route. Assessments, repairs and maintenance visits are scheduled within days, and emergency aeration can be on-site the same day for maintenance clients.

    Local water features worth knowing

    If you want to see what balanced water looks like at scale before planning your own feature, Irvine has good public examples nearby: Woodbridge North and South Lakes; San Joaquin Marsh & Wildlife Sanctuary; Irvine Spectrum fountains. The same principles — depth, circulation, filtration sized to the biological load, and shade — apply to a backyard koi pond.

    Nearby cities

    Pond and water feature service in Irvine

    Koi ponds, waterfalls, fountains and lakes, built and cared for by crews based 30 minutes away in Orange.

    Work in Irvine

    See more pond, waterfall and fountain projects

    Pond care guides for Irvine owners

    Maintenance · 19 min

    How Much Does Pond Maintenance Cost in 2026?

    Pond maintenance costs $450 to $5,000 per year depending on pond size, type, and service frequency. Breakdown by...

    Maintenance · 7 min

    How to Clean Green Water in Your Pond

    Struggling with green water in your pond? Learn proven tips to clear algae, improve filtration, and restore clean,...

    Maintenance · 8 min

    Signs Your Pond Needs Professional Cleaning Services

    Learn the key signs your pond needs professional cleaning services, from murky water to algae growth. Keep koi...

    All pond care guides

    Check out Koi Pros projects

    Koi ponds and water features we've designed, built and maintain across Southern California, from the crews that serve Irvine.

    Pond service questions from Irvine

    Is Irvine tap water safe for koi?

    Yes, as long as it's dechlorinated. Just never top off from the purple-pipe recycled line; its nutrients are why several community lakes fight algae.

    Why does my Irvine pond turn green every summer?

    Mostly nutrients: turf clippings and fertilizer runoff plus year-round evergreen debris, combined with sunny summers. The right filtration, UV and keeping recycled water out solve most cases.

    What's eating the fish in my pond?

    Herons, night herons and egrets from the San Joaquin Marsh and Woodbridge lakes, raccoons in the greenbelts and coyotes near Shady Canyon. A deep zone and fish caves work best.

    How much does koi pond maintenance cost here?

    We quote after one visit. Irvine's evergreen street trees mean debris service is steady all year rather than seasonal.

    Do you build new koi ponds locally?

    Yes, and because Irvine's clay swells and shrinks, we either reinforce a concrete shell for that movement or set a liner over a gravel base that drains.

    Pond or fountain in Irvine?

    Schedule an on-site assessment. We'll test the water, check the equipment and tell you what it needs.

    Call Request assessment