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ZIP Code 78701 Water Quality
Texas · 148,922 people served · 41 water systems
F
FailingZIP code 78701 is in Texas and is a mid-sized community from a drinking-water-service perspective, with 148,922 people served by 41 EPA-registered public water systems. It corresponds to AUSTIN.
Within ZIP code 78701, the EPA Safe Drinking Water Information System (SDWIS) records 31 health-based violations during the past five years across 41 water systems serving this postal area. The grade of F reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 78701
Water Systems Serving 78701
HAYS COUNTY WCID 1
PWSID: TX1050137
2,850 served
KELLY LANE WCID 2
PWSID: TX2270386
1,221 served
WILBARGER CREEK MUD 1
PWSID: TX2270380
3,459 served
TRAVIS COUNTY MUD 11
PWSID: TX2270379
1,437 served
PALOMA LAKE MUD 2
PWSID: TX2460165
2,265 served
TRAVIS COUNTY MUD 4
PWSID: TX2270325
6,816 served
KELLY LANE WCID 1
PWSID: TX2270382
2,331 served
WILLIAMSON COUNTY WSID 3
PWSID: TX2460152
8,265 served
WILLIAMSON COUNTY MUD 10
PWSID: TX2460145
3,513 served
WILLIAMSON COUNTY MUD 11
PWSID: TX2460159
4,248 served
MIRALOMAS MUD
PWSID: TX1300060
113 served
WEST BASTROP VILLAGE MUD
PWSID: TX0110064
120 served
THE COLONY MUD 1B
PWSID: TX0110054
657 served
COTTONWOOD CREEK MUD 1
PWSID: TX2270355
5,082 served
PALOMA LAKE MUD 1
PWSID: TX2460164
3,111 served
VISTA OAKS MUD
PWSID: TX2460139
2,724 served
SONTERRA MUD
PWSID: TX2460157
16,614 served
LAKESIDE WCID 1
PWSID: TX2270408
1,680 served
LAKESIDE WCID 2-A
PWSID: TX2270409
1,353 served
LAKESIDE WCID 2D
PWSID: TX2270410
2,385 served
LAKESIDE WCID 2-B
PWSID: TX2270371
1,419 served
LAKESIDE WCID 2-C
PWSID: TX2270373
3,084 served
PASEO DEL ESTE MUD 1
PWSID: TX0710186
36,773 served
WILBARGER CREEK MUD 2
PWSID: TX2270375
0 served
TRAVIS COUNTY MUD 14
PWSID: TX2270353
3,333 served
THE COLONY MUD 1A
PWSID: TX0110053
2,262 served
LAKESIDE MUD 5
PWSID: TX2270446
546 served
TRAVIS COUNTY MUD 12
PWSID: TX2270398
1,644 served
TRAVIS COUNTY MUD 2
PWSID: TX2270241
3,294 served
THE COLONY MUD 1C
PWSID: TX0110055
219 served
TRAVIS COUNTY MUD 13
PWSID: TX2270388
1,644 served
LAZY NINE MUD 1B
PWSID: TX2270417
4,669 served
NORTHTOWN MUD
PWSID: TX2270264
11,520 served
TRAVIS COUNTY WCID 20
PWSID: TX2270231
1,092 served
HAYS COUNTY WCID 2
PWSID: TX1050148
3,381 served
THE COLONY MUD 1E
PWSID: TX0110052
468 served
THE COLONY MUD 1F
PWSID: TX0110057
87 served
ELGIN MUD 1
PWSID: TX0110068
90 served
THE COLONY MUD 1D
PWSID: TX0110056
276 served
LAKESIDE MUD 3
PWSID: TX2270422
2,832 served
ELGIN MUNICIPAL UTILITY DISTRICT 2
PWSID: TX0110066
45 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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