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ZIP Code 74331 Water Quality
Oklahoma · 4,099 people served · 8 water systems
F
FailingZIP code 74331 is in Oklahoma and is a small town from a drinking-water-service perspective, with 4,099 people served by 8 EPA-registered public water systems. It overlaps with 3 communities including BIRD ISLAND, AFTON, BERNICE.
Within ZIP code 74331, the EPA Safe Drinking Water Information System (SDWIS) records 36 health-based violations during the past five years across 8 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 74331
Water Systems Serving 74331
COVES AT BIRD ISLAND
PWSID: OK3002135
100 served
CARRIAGE HILLS
PWSID: OK5002135
160 served
DELAWARE CO RWD # 7
PWSID: OK3002138
400 served
AFTON PWA
PWSID: OK1021696
1,428 served
DELAWARE CO RWD #10
PWSID: OK6002158
1,295 served
BERNICE PWA
PWSID: OK2002166
504 served
LEISURE SHORES WATER SYSTEM ASSN, INC
PWSID: OK2002145
150 served
OAK RIDGE ESTATES I & II WATER ASSOC.
PWSID: OK6002173
62 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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