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City water profile

Water hardness in Austin

Find official utility reports, understand hardness, and check the water system serving your home in Austin, Texas.

Utility-reported hardness

Not yet available

Check your provider and source →
State comparison
130 PPM above
Evidence comparison rank
#1 of 15
Matched utilities
1
Active health records
0

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →
Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

City Of Austin Water & Wastewater

TX2270001 · Surface water · 1,115,323 people served system-wide

A municipal system, in-state city, and served county all agree with this Census ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →
Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level
Reported level
0 mg/L
Action level
0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

Violation history (1)
Imported violation history for City Of Austin Water & Wastewater
RuleStatusPeriod
Interim Enhanced Surface Water Treatment RuleHealth-basedResolvedFeb 1, 2022 to Feb 28, 2022

City summary

What the indexed records say

Austin has 39 published ZIP profiles across Travis County. The regional-evidence median is 248 PPM. Its comparison-eligible median is 248 PPM versus 118 PPM statewide.

Among the 15 Texascities meeting the comparison standard, Austin ranks #1from highest to lowest. Across all 1,026 state ZIP profiles, available estimates run from 23.6to 310 PPM.

The 153.4–247.5 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard1 ZIP
Very hard38 ZIPs

39 of 39 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
7.7 miles
Profiles with evidence
39/39

Confidence labels

High: 27Moderate: 12Low: 0

Observation window: Oct 14, 2021 to Jul 16, 2025.

ZIP directory

Water reports in Austin

Open a ZIP for site-level provenance and measurements.

ZIP code

78617

Very Hard

247.5 PPM

Nearest site
15.2 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78652

Very Hard

247.5 PPM

Nearest site
5 mi
Confidence
High

View full ZIP evidence →

ZIP code

78701

Very Hard

247.5 PPM

Nearest site
6.1 mi
Confidence
High

View full ZIP evidence →

ZIP code

78702

Very Hard

247.5 PPM

Nearest site
7.8 mi
Confidence
High

View full ZIP evidence →

ZIP code

78703

Very Hard

247.5 PPM

Nearest site
4.9 mi
Confidence
High

View full ZIP evidence →

ZIP code

78704

Very Hard

247.5 PPM

Nearest site
4.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78705

Very Hard

247.5 PPM

Nearest site
6.5 mi
Confidence
High

View full ZIP evidence →

ZIP code

78712

Very Hard

247.5 PPM

Nearest site
6.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78719

Very Hard

247.5 PPM

Nearest site
11.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78721

Very Hard

247.5 PPM

Nearest site
9.6 mi
Confidence
High

View full ZIP evidence →

ZIP code

78722

Very Hard

247.5 PPM

Nearest site
7.8 mi
Confidence
High

View full ZIP evidence →

ZIP code

78723

Very Hard

247.5 PPM

Nearest site
9.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78724

Very Hard

218 PPM

Nearest site
13.6 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78726

Very Hard

218 PPM

Nearest site
10.8 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78727

Very Hard

218 PPM

Nearest site
13.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78728

Hard

153.4 PPM

Nearest site
15.6 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78730

Very Hard

247.5 PPM

Nearest site
6.2 mi
Confidence
High

View full ZIP evidence →

ZIP code

78731

Very Hard

247.5 PPM

Nearest site
6.9 mi
Confidence
High

View full ZIP evidence →

ZIP code

78733

Very Hard

247.5 PPM

Nearest site
4 mi
Confidence
High

View full ZIP evidence →

ZIP code

78735

Very Hard

247.5 PPM

Nearest site
1.5 mi
Confidence
High

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ZIP code

78736

Very Hard

247.5 PPM

Nearest site
3.9 mi
Confidence
High

View full ZIP evidence →

ZIP code

78739

Very Hard

247.5 PPM

Nearest site
2.4 mi
Confidence
High

View full ZIP evidence →

ZIP code

78741

Very Hard

247.5 PPM

Nearest site
7.6 mi
Confidence
High

View full ZIP evidence →

ZIP code

78742

Very Hard

247.5 PPM

Nearest site
10.9 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78744

Very Hard

247.5 PPM

Nearest site
7.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78745

Very Hard

247.5 PPM

Nearest site
2.9 mi
Confidence
High

View full ZIP evidence →

ZIP code

78746

Very Hard

247.5 PPM

Nearest site
2.6 mi
Confidence
High

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ZIP code

78747

Very Hard

247.5 PPM

Nearest site
9.2 mi
Confidence
High

View full ZIP evidence →

ZIP code

78748

Very Hard

247.5 PPM

Nearest site
4.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78749

Very Hard

247.5 PPM

Nearest site
1.1 mi
Confidence
High

View full ZIP evidence →

ZIP code

78750

Very Hard

218 PPM

Nearest site
12 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78751

Very Hard

247.5 PPM

Nearest site
7.7 mi
Confidence
High

View full ZIP evidence →

ZIP code

78752

Very Hard

247.5 PPM

Nearest site
9.3 mi
Confidence
High

View full ZIP evidence →

ZIP code

78753

Very Hard

218 PPM

Nearest site
12.7 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78754

Very Hard

218 PPM

Nearest site
13.5 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78756

Very Hard

247.5 PPM

Nearest site
7.1 mi
Confidence
High

View full ZIP evidence →

ZIP code

78757

Very Hard

247.5 PPM

Nearest site
8.6 mi
Confidence
High

View full ZIP evidence →

ZIP code

78758

Very Hard

218 PPM

Nearest site
11.4 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

78759

Very Hard

218 PPM

Nearest site
10.2 mi
Confidence
Moderate

View full ZIP evidence →

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Austin

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.