Building the best and fixing the rest · Mon–Fri 8–4 · Sat 9–5 · Orange, CA · Serving Southern California & Arizona [email protected]
Koi Pros

Orange pond builders, water feature care and leak repair

Our home base. Old Towne and Orange Park Acres have some of the county's oldest koi ponds, many built before bottom drains were standard, and renovation is our most common call here.

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    Tell us about the feature and where it is. We reply within one business day.








    Or call (714) 613-0123. No marketing emails; we only follow up about your request.

    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 Orange

    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 Orange.

    Tap water and fill water

    City of Orange water is a blend of Orange County groundwater basin wells and imported Metropolitan Water District supply. It runs moderately hard and is disinfected with chloramine, which ordinary dechlorinators don't neutralize unless they're rated for it; we dose for chloramine on every refill.

    Heat, evaporation and wind

    Inland-valley heat: summer highs in the low 90s, Santa Ana wind events in fall that dump debris and spike evaporation, and mild winters that rarely frost. Water temperature in a shallow pond can swing 15°F in a day during a heat wave.

    Soil, grade and excavation

    Mostly alluvial loam on the flats with clay pockets toward El Modena and the foothills around Orange Park Acres; decomposed granite on the Santiago Canyon side. Liner ponds need underlayment over anything rocky.

    Predators and wildlife

    Great blue herons and black-crowned night herons commute from Irvine Lake and Santiago Creek; raccoons work the Santiago Creek corridor and Orange Park Acres nightly; coyotes along the foothill edges.

    Great blue heron with a fish in its beak
    Herons are the number-one koi predator in Southern California

    Leaf and debris load

    Old Towne and Orange Park Acres have mature sycamores, pines, liquidambars and citrus. Spring jacaranda bloom and fall sycamore leaf drop are the two heaviest skimmer-clogging periods.

    Lavender water lily blossom over lily pads
    Water lily in bloom

    Water features we build and service in Orange

    Craftsman-era lots in Old Towne with original formal ponds, half-acre equestrian estates in Orange Park Acres with large naturalistic koi ponds and streams, and 1960s–70s tract ponds across the flats that are often due for filtration retrofits.

    Neighborhoods and communities we work in: Old Towne, Orange Park Acres, El Modena, Santiago Canyon, Fairhaven, Fair Hills, Fairmeadow, Mabury Ranch.

    Residential pond, waterfall and fountain services

    Design and construction

    Scheduled care

    Repair and water loss

    Commercial water feature services in Orange

    Property types

    Lake and large-feature programs

    How Orange service is scheduled

    Orange 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, Orange has good public examples nearby: Irvine Regional Park lake; Old Towne Orange Plaza fountain; Santiago Creek. 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 Orange

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

    Work in Orange

    See more pond, waterfall and fountain projects

    Pond care guides for Orange owners

    Construction · 9 min

    Koi Pond Installation: What Every Homeowner Should Know

    How to plan, design, and maintain a koi pond. Koi pond installation steps, costs, and why hiring a professional...

    Maintenance · 37 min

    How Biological Filtration Works in a Koi Pond

    Biological filtration converts fish ammonia to nitrate via nitrifying bacteria on pond media. Covers cycling, media...

    Design · 9 min

    Backyard Pond Ideas & Pond Landscaping Guide

    Explore backyard pond ideas, costs, design tips, and maintenance. Learn how a pond contractor can help create your...

    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 Orange.

    Pond service questions from Orange

    Is Orange tap water safe for koi?

    Yes, if the conditioner is rated for chloramine; ordinary dechlorinators won't handle it. We dose for chloramine every time we add water.

    Why does my Orange pond turn green every summer?

    Summer heat can swing shallow pond temperatures sharply, and Santa Ana winds dump debris that feeds algae. More depth, shade and good filtration stabilize it.

    What's eating the fish in my pond?

    Night herons and great blue herons commuting from Irvine Lake, raccoons along the creek and in Orange Park Acres, and coyotes near the foothills. A deep zone and fish caves protect koi.

    How much does koi pond maintenance cost here?

    Spring jacaranda and fall sycamore drop mean more skimmer work under the older trees; we quote after a first visit.

    Do you build new koi ponds locally?

    Yes; most lots are loam, with clay toward El Modena and decomposed granite near Santiago Canyon, where liners need good underlayment.

    Pond or fountain in Orange?

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

    Call Request assessment