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Home/ZIP Codes/78745

Tap Water Quality in Austin, Texas (ZIP 78745)

Serving Austin, Texas

Danger
42 above health guidelines
1
City
1266+
Tested
42
Above Guidelines
13
Utilities

Is the Tap Water Safe in Austin, Texas?

Tap water in Austin, Texas (ZIP 78745) has 42 contaminants above EPA health-based guidelines (MCLGs) in at least one of the 1 city served. We recommend reviewing detailed city reports below and considering a certified water filter for additional protection.

ZIP 78745 is served by 13 water utilities providing water to Austin. Water quality varies by utility and city. Click on the cities below to see detailed reports for your specific area.

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Water Quality Report for ZIP 78745

7 contaminants above EPA health guidelines

These levels represent the worst case across all cities in this ZIP code. Check individual city reports for specific details.

Gross Alpha Activity

Found in Austin

2.23 pCi/L
Guideline: 0 pCi/L
Bromoform

Found in Austin

8.25 PPB
Guideline: 0 PPB
Bromodichloromethane

Found in Austin

17.1 PPB
Guideline: 0 PPB
Lead

Found in Austin

0.00137 PPM
Guideline: 0 PPM
0.0102 PPM
Guideline: 0 PPM
4 pCi/L
Guideline: 0 pCi/L
3.02 pCi/L
Guideline: 0 pCi/L

Water Utilities Serving ZIP 78745

TRAVIS COUNTY MUD 10

People Served:

453

Contact:
512-267-9610

Water Source:

Surface water

Contaminants Tested:

211

NORTH AUSTIN MUD 1

People Served:

11,133

Contact:
512-633-2604

Water Source:

Surface water purchased

Contaminants Tested:

22

TRAVIS COUNTY WCID 17

People Served:

45,165

Contact:
512-266-1111

Water Source:

Surface water

Contaminants Tested:

213

NAMELESS HOLLOW CONDOMINIUMS

People Served:

210

Contact:
512-633-8336

Water Source:

Groundwater

Contaminants Tested:

200

INDIAN SPRINGS SUBDIVISION

People Served:

159

Contact:
512-990-4400

Water Source:

Surface water purchased

Contaminants Tested:

22

WILBARGER CREEK MUD 1

People Served:

3,459

Contact:
512-347-9005

Water Source:

Groundwater purchased

Contaminants Tested:

32

BRIARCREEK SUBDIVISION

People Served:

2,769

Contact:
512-990-4400

Water Source:

Groundwater purchased

Contaminants Tested:

21

CITY OF AUSTIN WATER & WASTEWATER

People Served:

1,044,405

Contact:
512-972-0108

Water Source:

Surface water

Contaminants Tested:

239

COTTONWOOD CREEK MUD 1

People Served:

4,488

Contact:
512-435-2300

Water Source:

Groundwater purchased

Contaminants Tested:

22

MANVILLE WSC

People Served:

39,648

Contact:
512-281-3767

Water Source:

Surface water purchased

Contaminants Tested:

220

LAKESIDE WCID 2-A

People Served:

1,353

Contact:
512-322-5818

Water Source:

Surface water purchased

Contaminants Tested:

20

TRAVIS COUNTY MUD 14

People Served:

2,364

Contact:
512-251-6920

Water Source:

Groundwater purchased

Contaminants Tested:

22

TRAVIS COUNTY MUD 2

People Served:

1,956

Contact:
512-246-1400

Water Source:

Groundwater purchased

Contaminants Tested:

22

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Best Water Filters for Austin (ZIP 78745)

Based on the contaminants found in your area, we recommend NSF-certified water filters that can remove the specific contaminants above health guidelines.

Filter guides for the contaminants detected here:

Reverse Osmosis FiltersUnder-Sink FiltersView All Filters

Frequently Asked Questions about Austin Tap Water

Is the tap water safe in Austin, Texas (ZIP 78745)?

Tap water in Austin, Texas (ZIP 78745) has 42 contaminants above EPA health-based guidelines (MCLGs) in at least one of the 1 city served. We recommend reviewing the detailed city reports below and considering a certified water filter for additional protection.

Which water utilities serve ZIP code 78745?

ZIP code 78745 is served by 13 water utilities: TRAVIS COUNTY MUD 10, NORTH AUSTIN MUD 1, TRAVIS COUNTY WCID 17, NAMELESS HOLLOW CONDOMINIUMS, INDIAN SPRINGS SUBDIVISION, WILBARGER CREEK MUD 1, BRIARCREEK SUBDIVISION, CITY OF AUSTIN WATER & WASTEWATER, COTTONWOOD CREEK MUD 1, MANVILLE WSC, LAKESIDE WCID 2-A, TRAVIS COUNTY MUD 14, TRAVIS COUNTY MUD 2.

How do I pay my water bill in Austin (ZIP 78745)?

CITY OF AUSTIN WATER & WASTEWATER (the largest utility serving ZIP 78745) handles billing for most Austin addresses. Call 512-972-0108 to pay your bill or set up online payments. Other utilities serve smaller pockets of this ZIP — check the utility list below if you don't recognize CITY OF AUSTIN WATER & WASTEWATER.

What contaminants are in Austin water (ZIP 78745)?

Water testing in ZIP 78745 found 7 contaminants above EPA health guidelines: Gross Alpha Activity, Bromoform, Bromodichloromethane, Lead, Dichloroacetic Acid (DCA), and more.

Should I use a water filter in Austin (ZIP 78745)?

Yes, we recommend using an NSF-certified water filter for ZIP 78745 because 42 contaminants are above EPA health guidelines. Reverse osmosis systems or under-sink filters certified to remove the specific contaminants found in your water are recommended.

What cities are in ZIP code 78745?

ZIP code 78745 serves Austin, Texas.

How we built this page

Water-quality data on this page comes from public federal and state records for the 13 utilityies serving ZIP 78745. We refresh each utility's record whenever its underlying source publishes new data.

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Austin, Texas Tap Water Quality (ZIP 78745) — TapWaterData 2026 | TapWaterData