How Hard is the Water in Austin?

Water hardness in Austin (78753) is around 120 mg/L, which is considered moderately hard water.

Understanding Water Hardness in Austin, TX

Austin’s water supply comes primarily from Lake Travis and Lake Austin, which are part of the Colorado River system. The water in ZIP code 78753 typically contains:

• Calcium: 35-45 mg/L
• Magnesium: 8-12 mg/L
• Total Hardness: 110-130 mg/L (as CaCO₃)

What Does This Mean for You?

With moderately hard water, residents in the 78753 area may experience:

• Soap Performance: You might notice that soap doesn’t lather as easily
• Scale Buildup: Minor mineral deposits on faucets and showerheads over time
• Appliance Impact: Water heaters and dishwashers may accumulate some scale
• Skin and Hair: Generally manageable effects on skin and hair

Treatment Recommendations

For water hardness levels in this range, consider:

1. Water Softener: A whole-house water softener can reduce hardness to 0-3 grains per gallon
2. Descaling Agents: Regular use of descaling products for appliances
3. Shower Filters: Point-of-use filters for improved bathing experience

Local Water Quality

The City of Austin provides high-quality water that meets all federal and state standards. The water is treated at:

• Ullrich Water Treatment Plant
• Davis Water Treatment Plant

Comparing to Other Areas

Austin’s water hardness is:

• Lower than: San Antonio (very hard)
• Higher than: Houston (soft to moderately soft)
• Similar to: Dallas-Fort Worth area

Testing Your Water

If you want to test your specific water hardness:

• Contact the City of Austin Water Utility
• Use home test kits available at hardware stores
• Hire a certified water testing laboratory

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Last updated: January 2025. Water hardness can vary seasonally and by specific location within the ZIP code.