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ZIP Code 78734 Water Quality
Ohio · 61,752 people served · 10 water systems
A
ExcellentZIP code 78734 is in Ohio and is a mid-sized community from a drinking-water-service perspective, with 61,752 people served by 10 EPA-registered public water systems. It overlaps with 2 communities including AUSTIN, LAKEWAY.
Within ZIP code 78734, the EPA Safe Drinking Water Information System (SDWIS) records no health-based Maximum Contaminant Level (MCL) exceedances during the past five years across the 10 water systems serving this postal area.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 78734
Water Systems Serving 78734
THUNDERBIRD TERRACE MHP
PWSID: OH7605512
122 served
LAKEWAY MUD
PWSID: TX2270012
10,512 served
DEERHAVEN WCID
PWSID: TX1500126
336 served
TRAVIS COUNTY WCID 17
PWSID: TX2270027
45,165 served
TRAVIS COUNTY MUD 10
PWSID: TX2270333
490 served
CYPRESS RANCH WCID 1
PWSID: TX2270352
1,785 served
TRAVIS COUNTY WCID 19
PWSID: TX2270207
597 served
LOOP 360 WSC
PWSID: TX2270242
1,743 served
THE COVES WSC
PWSID: TX2270324
648 served
BASTROP COUNTY MUD 1
PWSID: TX0110049
354 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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