Van Nuys
Royal Garden Apartments
84-fixture retrofit across 56 units, 34% water reduction, 1,026,888 gallons saved annually.
Read case study →
Case Study · Water Conservation
A toilet retrofit at a student apartment complex near USC: 836 high-efficiency toilets replaced in 12 days, with 37.5% less water on every flush.
Student housing · Los Angeles
Project Overview
University Gateway is a student apartment complex at 3335 S Figueroa Street, a short walk from USC. Planet Optima replaced 836 of its 1.6 GPF toilets with 1.0 GPF high-efficiency toilets, along with angle stops and supply lines where they were needed.
Crews finished the whole property in 12 days. Each new toilet uses 37.5% less water per flush, which works out to about 1.28 million gallons a year at Planet Optima’s standard rate of 7 flushes per toilet per day.
See how the LADWP toilet rebate program works →
Project Details

Calculated Savings
These figures are calculated from the toilet count and flush volumes using Planet Optima’s standard formula (7 flushes per toilet per day). They are estimates, not meter readings.
Occupancy in student housing changes through the year, so the real savings can run higher or lower than this figure.
The same water saved each year, put in everyday terms.



“Planet Optima recently replaced over 800 toilets in our apartment building. We were thoroughly impressed by the speed and precision of their replacement crews. Planet Optima is highly recommended to other properties upgrading plumbing fixtures.”
Scope of Work
Planet Optima handled the retrofit from start to finish, from removing the old toilets to installing the new ones and replacing angle stops and supply lines where needed. The whole property was done in 12 days.
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LADWP funds the whole toilet replacement for buildings that meet four conditions. After 500,000 fixtures we know exactly what decides it.
“Working with Planet Optima is like a breath of fresh air! Professional and thorough, the team has navigated multiple large scale and complex projects for HDS with ease. Timely communication and a true professional partner. I recommend highly and will be partnering with them again without hesitation!”
“Once I completed the walk with Planet Optima I felt at ease and confident this project would be handled professionally. They did a complete and thorough job, were very attentive to all the residents, and kept their area clean and neat throughout the project.”
“Planet Optima made the entire process seamless. From the initial assessment to the final installation, they handled everything professionally and on schedule. Our tenants experienced minimal disruption, and the savings on our water bill were immediate.”
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