Water Pipe Freeze Prevention Flow Calculator

Enter today's low temperature and your home's conditions to see the freeze-risk level and how much water to leave dripping.

🌡️ Enter Today's Conditions

-30℃0℃+10℃

Enter this morning's / tomorrow morning's forecast low temperature.

Housing Type
Water Meter Location
Expected Cold Spell

Criteria Sources

  • 🚦 Risk level: Seoul Waterworks 4-stage water-meter freeze forecast
  • 💧 Drip flow: Seoul Waterworks (caution 240 mL/min · alert 330 · severe 400+)
  • 💰 Water cost: approx 1,000 KRW/m³ (water + sewage + usage charge)

※ All results are reference estimates. Actual freeze risk varies by building structure, region, wind, and sunlight.

📊 Freeze Risk Result

Today's Freeze Risk Level

Caution

Water-meter freeze risk. Leave the tap dripping gently before bed/leaving and insulate the meter.

Recommended Drip Flow

240 mL/분

Stream thickness

💧 Pencil-lead width stream

Estimated Extra Water Cost (if dripping continuously)

1 hour

14원

6 hours

84원

12 hours

168원

Based on ~1,000 KRW/m³ (water + sewage + usage charge approx). Far cheaper than freeze repair (tens of thousands of KRW).

✅ What to Do Now

  • Fill the meter box with old clothes/towels/insulation and seal with plastic
  • Leave the kitchen/bathroom tap dripping at the recommended rate
  • Be extra careful in the coldest pre-dawn hours (4–7 a.m.)

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