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ZIP Code 98261 Water Quality
Washington · 1,758 people served · 11 water systems
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ExcellentZIP code 98261 is in Washington and is a rural community from a drinking-water-service perspective, with 1,758 people served by 11 EPA-registered public water systems. It corresponds to Lopez Island.
Within ZIP code 98261, the EPA Safe Drinking Water Information System (SDWIS) records no health-based Maximum Contaminant Level (MCL) exceedances during the past five years across the 11 water systems serving this postal area.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 98261
Water Systems Serving 98261
Milagra Water System
PWSID: WA53AA517
31 served
ALECK BAY PARK WATER SYSTEM
PWSID: WA5301338
40 served
MacKaye Harbor Water District
PWSID: WA5312911
133 served
FISHERMAN BAY WATER ASSOCIATION
PWSID: WA5325547
1,195 served
HARBOR ON FISHERMAN BAY
PWSID: WA5331024
84 served
HUMPHREY HEAD OWNERS ASSOC
PWSID: WA5334860
37 served
NORTH LOPEZ SERVICE
PWSID: WA5360665
114 served
SHOAL BAY & SWIFT BAY WATER ASSN.
PWSID: WA5378398
35 served
SUNRISE BEACH ASSOCIATION
PWSID: WA5385641
27 served
Common Field Water System
PWSID: WA53AB738
36 served
Salish Sea Water System
PWSID: WA53AC941
26 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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