马桶用水量计算器

使用马桶用水量计算器估算冲厕的年度水资源消耗。输入马桶类型和每日使用次数,计算用水量和水费。比较节水马桶的节水效果和升级投资回报。

gallons
USD/1000 gal

Annual Toilet Water

7,008 gallons

年费用35.04 USD
Savings with 1.0 GPF Toilet13.14 USD
Daily Use19.2 gallons

Annual Toilet Water vs Water Rate

公式

How to Calculate Toilet Water Usage

Toilets are the single largest indoor water user, accounting for about 24% of household water.

Formula

Annual Gallons = Flushes/Day * GPF * 365

Gallons per Flush by Age

  • Pre-1980 toilets: 5-7 GPF
  • 1980-1994: 3.5 GPF
  • 1994+ federal standard: 1.6 GPF
  • WaterSense (current): 1.28 GPF
  • Ultra low-flow: 0.8-1.0 GPF
  • 计算示例

    12 flushes/day with 1.6 GPF toilet at $5/1000 gal water rate.

    1. 01Daily water: 12 * 1.6 = 19.2 gallons
    2. 02Annual water: 19.2 * 365 = 7,008 gallons
    3. 03Annual cost: 7,008 * $5 / 1,000 = $35.04
    4. 04Savings with 1.0 GPF: (1.6-1.0) * 12 * 365 * $5 / 1,000 = $13.14

    常见问题

    How many times does a person flush per day?

    The average person flushes about 5-6 times per day. A household of 2-3 people averages 10-15 flushes daily.

    How much can a low-flow toilet save?

    Replacing a 3.5 GPF toilet with a 1.28 GPF model saves about 9,700 gallons per year for a typical household, cutting toilet water use by 63%.

    Do dual-flush toilets save water?

    Yes. Dual-flush toilets use 0.8 gallons for liquid waste and 1.6 for solid. Since most flushes are for liquid, average use drops to about 1.0 GPF effectively.

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