A 281-unit apartment building in Washington, D.C. cut its water use 49% with micrometers on toilets and showers. Snapshot: Multifamily · 281 units · 843 tenants · Scope: toilets & showers · Report period: 9 months · Result: 49% less water
A 281-unit apartment building in Washington, D.C., home to 843 tenants, with a local combined water and sewer rate of $18.69 per HCF.
At 42 gallons per tenant a day, this building didn't look wasteful. But at $18.69 per HCF, every wasted gallon costs more, and water was running $94.68 per unit every month. The bill showed the total, never the source, so management couldn't see where the money was going.
DrizzleX installed its patented micrometers on every toilet and shower across the property. Data is transmitted by LoRa, the same low-energy radio technology utility meters use. The dashboard flagged leaks and overuse at the unit level, with alerts prioritized by cost so maintenance fixed the most expensive waste first. City water bills then confirmed the results in real dollars.
The results: nine-month report period

In a high-rate market, every gallon of waste stopped is worth more. Here that's $46.43 per unit, every month, off the water bill, even in a building that already looked efficient.
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