Los Angeles pond builders, water feature care and leak repair
From Hancock Park to the Hollywood Hills to Brentwood, we build, renovate and maintain koi ponds and fountains on lots where access, privacy and quiet equipment matter.
Pond and water feature conditions in Los Angeles
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 Los Angeles.
Tap water and fill water
LADWP blends Eastern Sierra aqueduct water (naturally soft) with imported Colorado River and State Water Project supply and local groundwater; hardness varies by neighborhood and season, and the system is chloraminated. Hillside and Westside addresses often get softer aqueduct-heavy water than the Valley.
Heat, evaporation and wind
Varies by district: marine-cooled on the Westside, hot in the Valley and foothills. Hillside lots get wind exposure that evaporates and splashes waterfalls; Valley ponds overheat without depth and shade.
Soil, grade and excavation
Everything from Hollywood Hills bedrock and slide-prone slopes to Valley clay and Westside sandy loam. Hillside ponds and waterfalls need engineered bases and often a soils report.
Predators and wildlife
Herons and egrets from the LA River, Sepulveda Basin and Ballona wetlands; raccoons and coyotes in every hillside neighborhood; hawks over the canyons.
Leaf and debris load
Jacaranda in spring, sycamore and liquidambar in fall, year-round ficus and pine; canyon lots get wind-driven oak and eucalyptus litter.
Water features we build and service in Los Angeles
Estate koi ponds in Hancock Park, Brentwood and the Hollywood Hills, studio-lot and hotel water features, courtyard fountains in Spanish-revival homes, and large HOA and apartment features in Playa Vista and the Valley.
Neighborhoods and communities we work in: Hancock Park, Hollywood Hills, Brentwood, Bel Air, Los Feliz, Encino, Sherman Oaks, Playa Vista, Silver Lake.
Residential pond, waterfall and fountain services
Design and construction
- Koi pond construction (koi pond installation, fish pond building, water gardens)
- Pond and water feature design
- Waterfall and stream construction and pondless waterfalls
- Garden and courtyard fountains
- Pond renovation and rebuilds
Scheduled care
- Monthly koi pond maintenance (pond service, pond upkeep)
- Pond cleaning and spring clean-outs
- Algae and string-algae control
- Koi transport, boarding and rehoming
Repair and water loss
- Pond repair: pumps, filters, liners, plumbing, electrical
- Leak detection for ponds, fountains and waterfalls losing water
- Resealing and relining (polyurea, EPDM, concrete)
- Waterfall repair
Commercial water feature services in Los Angeles
Property types
- HOAs & Community Associations
- Hotels, Resorts & Casinos
- Apartment & Multifamily Communities
- Golf Courses & Country Clubs
- Office Parks, Retail & Business Centers
- Municipal Parks & Public Spaces
- Cemeteries & Memorial Parks
- Restaurants & Hospitality
Lake and large-feature programs
- Lake and large pond management: aeration, water quality, floating fountains
- Algae and aquatic weed control with licensed applicators
- Shoreline stabilization and erosion repair
How Los Angeles service is scheduled
Los Angeles is on our Los Angeles 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, Los Angeles has good public examples nearby: Japanese Garden at the Tillman Reclamation Plant (Van Nuys); Echo Park Lake; Ballona Wetlands. 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 Los Angeles
Koi ponds, waterfalls, fountains and lakes, built and cared for by crews based 30 minutes away in Orange.
Work in Los Angeles
Photos from Los Angeles projects go here as they are completed. Each one links to a project page.
Pond care guides for Los Angeles 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 · 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....
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...
Check out Koi Pros projects
Koi ponds and water features we've designed, built and maintain across Southern California, from the crews that serve Los Angeles.
Pond service questions from Los Angeles
Is Los Angeles tap water safe for koi?
Yes, once it's treated. LADWP blends Eastern Sierra aqueduct water (naturally soft) with imported Colorado River and State Water Project supply and local groundwater; hardness varies by neighborhood and season, and the system is chloraminated. Hillside and Westside addresses often get softer aqueduct-heavy water than the Valley. We dechlorinate every refill and top-off and test the tap on the first visit.
Why does my Los Angeles pond turn green every summer?
Heat, light and nutrients. Varies by district: marine-cooled on the Westside, hot in the Valley and foothills. Hillside lots get wind exposure that evaporates and splashes waterfalls; Valley ponds overheat without depth and shade. Add the local leaf and debris load (Jacaranda in spring, sycamore and liquidambar in fall, year-round ficus and pine; canyon lots get wind-driven oak and eucalyptus litter) 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?
Herons and egrets from the LA River, Sepulveda Basin and Ballona wetlands; raccoons and coyotes in every hillside neighborhood; hawks over the canyons. 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. Everything from Hollywood Hills bedrock and slide-prone slopes to Valley clay and Westside sandy loam. Hillside ponds and waterfalls need engineered bases and often a soils report. We plan the excavation and base around that, then design filtration, rockwork and planting for a fixed-scope quote.