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

Chino Hills pond builders, water feature care and leak repair

Hillside homes and equestrian lots with room for larger naturalistic ponds and streams.

    Request an assessment

    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.

    Showa and kohaku koi through an acrylic viewing window
    Showa and kohaku through the viewing window
    Multi-tier estate stream and waterfall lit at night
    Estate stream, lit for evening
    Raised formal koi pond with stacked-stone spillway wall and stamped concrete
    Raised formal koi pond with spillway wall

    Pond and water feature conditions in Chino Hills

    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 Chino Hills.

    Tap water and fill water

    Chino Hills blends imported water with local groundwater through the Chino Basin desalters; hard, chloraminated.

    Heat, evaporation and wind

    Hot (mid-90s), Santa Ana winds through Carbon Canyon, cool winter nights.

    Soil, grade and excavation

    Clay and siltstone hillsides with slope-stability concerns on the canyon lots; graded fill in the tract communities.

    Predators and wildlife

    Chino Hills State Park puts coyotes, bobcats, raccoons and the occasional mountain lion on nearly every property; herons from the Prado Basin.

    Black-crowned night heron holding a fish
    Night herons hunt after dark, when most deterrents are off

    Leaf and debris load

    Oaks and sycamores in the canyons, eucalyptus and pine in the tracts.

    Water garden with lily pads, flagstone edging and perennial borders
    Water garden with lilies and flagstone edge

    Water features we build and service in Chino Hills

    Equestrian and estate lots in the Carbon Canyon and Los Serranos areas with large ponds, Los Serranos Country Club lakes, Vellano gated-community water features, and HOA entry fountains throughout.

    Neighborhoods and communities we work in: Los Serranos, Carbon Canyon, Vellano, Rolling Ridge, Butterfield Ranch.

    Residential pond, waterfall and fountain services

    Design and construction

    Scheduled care

    Repair and water loss

    Commercial water feature services in Chino Hills

    Property types

    Lake and large-feature programs

    How Chino Hills service is scheduled

    Chino Hills is on our Inland Empire route: weekly routed maintenance, repair visits scheduled around the route, and construction crews dispatched from Orange County for the duration of a build.

    Local water features worth knowing

    If you want to see what balanced water looks like at scale before planning your own feature, Chino Hills has good public examples nearby: Chino Hills State Park; Los Serranos Country Club lakes; English Springs Park lake. 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 Chino Hills

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

    Work in Chino Hills

    Photos from Chino Hills projects go here as they are completed. Each one links to a project page.

    See more pond, waterfall and fountain projects

    Pond care guides for Chino Hills owners

    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...

    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 · 19 min

    Pond Water Quality Parameters: Testing and Management Guide

    Pond water quality parameters include pH, ammonia, nitrite, nitrate, KH, GH, dissolved oxygen, and temperature....

    All pond care guides

    Koi Pros pond design and construction projects

    Check out Koi Pros projects

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

    Pond service questions from Chino Hills

    Is Chino Hills tap water safe for koi?

    Yes, once it's treated. Chino Hills blends imported water with local groundwater through the Chino Basin desalters; hard, chloraminated. We dechlorinate every refill and top-off and test the tap on the first visit.

    Why does my Chino Hills pond turn green every summer?

    Heat, light and nutrients. Hot (mid-90s), Santa Ana winds through Carbon Canyon, cool winter nights. Add the local leaf and debris load (Oaks and sycamores in the canyons, eucalyptus and pine in the tracts) and an undersized filter can't keep up. UV clarification, shade and a maintenance schedule fix it.

    What's eating the fish in my pond?

    Chino Hills State Park puts coyotes, bobcats, raccoons and the occasional mountain lion on nearly every property; herons from the Prado Basin. Depth of 3–4 ft, overhangs, fish caves and motion-activated deterrents are the fixes that actually work; netting is the last resort.

    How much does koi pond maintenance cost here?

    Monthly residential service is priced by pond volume, fish load and access, and quoted after a first visit. Most local homeowners land on a monthly plan with a spring clean-out; we'll tell you if your pond needs less.

    Do you build new koi ponds locally?

    Yes. Clay and siltstone hillsides with slope-stability concerns on the canyon lots; graded fill in the tract communities. We plan the excavation and base around that, then design filtration, rockwork and planting for a fixed-scope quote.

    Pond or fountain in Chino Hills?

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

    Call Request assessment