Pasadena pond builders, water feature care and leak repair
Craftsman and estate gardens in Oak Knoll, San Rafael and Linda Vista, many with historic water features due for careful restoration.
Pond and water feature conditions in Pasadena
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 Pasadena.
Tap water and fill water
Pasadena Water & Power draws roughly 40% from Raymond Basin wells and imports the rest; the groundwater is hard and the blend is chloraminated. Scale on fountain nozzles and UV sleeves is routine.
Heat, evaporation and wind
Hot inland summers in the mid-90s, cool winters with frost in the upper neighborhoods against the San Gabriels, and strong Santa Ana winds down the Arroyo.
Soil, grade and excavation
Decomposed granite and cobble alluvium from the mountains: fast-draining, rocky, hard on liners without proper underlayment. Arroyo-edge lots are steep.
Predators and wildlife
Raccoons and coyotes from the Arroyo Seco and Eaton Canyon; herons from the Arroyo and nearby reservoirs; black bears occasionally in the upper foothills.
Leaf and debris load
Oaks, deodar cedars, sycamores, camphor and magnolia on estate lots; heavy acorn and leaf load in fall.
Water features we build and service in Pasadena
Historic estates in Oak Knoll, San Rafael and Linda Vista with 1900s–1930s formal ponds and fountains in need of restoration, Craftsman gardens in Bungalow Heaven, Caltech and corporate campus features, and Old Pasadena hotel courtyards.
Neighborhoods and communities we work in: Oak Knoll, San Rafael, Linda Vista, Bungalow Heaven, Madison Heights, Hastings Ranch, Old Pasadena.
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 Pasadena
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 Pasadena service is scheduled
Pasadena 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, Pasadena has good public examples nearby: Arlington Garden; Arroyo Seco; Pasadena City Hall courtyard fountain. 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 Pasadena
Koi ponds, waterfalls, fountains and lakes, built and cared for by crews based 30 minutes away in Orange.
Work in Pasadena
Photos from Pasadena projects go here as they are completed. Each one links to a project page.
Pond care guides for Pasadena owners
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...
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...
Maintenance · 18 min
How to Remove Pond Sludge and Muck: Methods by Pond Size
Pond sludge accumulates from fish waste, leaf litter, and decaying algae. Covers vacuuming, beneficial bacteria,...
Check out Koi Pros projects
Koi ponds and water features we've designed, built and maintain across Southern California, from the crews that serve Pasadena.
Pond service questions from Pasadena
Is Pasadena tap water safe for koi?
Yes, once it's treated. Pasadena Water & Power draws roughly 40% from Raymond Basin wells and imports the rest; the groundwater is hard and the blend is chloraminated. Scale on fountain nozzles and UV sleeves is routine. We dechlorinate every refill and top-off and test the tap on the first visit.
Why does my Pasadena pond turn green every summer?
Heat, light and nutrients. Hot inland summers in the mid-90s, cool winters with frost in the upper neighborhoods against the San Gabriels, and strong Santa Ana winds down the Arroyo. Add the local leaf and debris load (Oaks, deodar cedars, sycamores, camphor and magnolia on estate lots; heavy acorn and leaf load in fall) 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?
Raccoons and coyotes from the Arroyo Seco and Eaton Canyon; herons from the Arroyo and nearby reservoirs; black bears occasionally in the upper foothills. 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. Decomposed granite and cobble alluvium from the mountains: fast-draining, rocky, hard on liners without proper underlayment. Arroyo-edge lots are steep. We plan the excavation and base around that, then design filtration, rockwork and planting for a fixed-scope quote.