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ZIP Code 99301 Water Quality
Washington · 117,470 people served · 17 water systems
D
PoorZIP code 99301 is in Washington and is a mid-sized community from a drinking-water-service perspective, with 117,470 people served by 17 EPA-registered public water systems. It corresponds to Pasco.
Within ZIP code 99301, the EPA Safe Drinking Water Information System (SDWIS) records 7 health-based violations during the past five years across 17 water systems serving this postal area. The grade of D 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 99301
Water Systems Serving 99301
Clark Addition Water System
PWSID: WA53AB809
189 served
NORTH SLOPE ESTATES PROPERTY
PWSID: WA5310761
97 served
RANGEVIEW
PWSID: WA53AD017
122 served
LAKEVIEW
PWSID: WA53AD018
50 served
Great Basin Water Kiona
PWSID: WA5310724
520 served
Great Basin Water Burbank
PWSID: WA5331477
656 served
OAKDELL FARMS LLC
PWSID: WA5362695
47 served
PASCO WATER DEPARTMENT
PWSID: WA5366400
115,102 served
Great Basin Water Sunrise
PWSID: WA5385630
100 served
Hi-Point Housing
PWSID: WA53AD259
96 served
J & B Orchards - South
PWSID: WA5341814
63 served
RIVER RIDGE ESTATES
PWSID: WA5338792
77 served
PREDATOR RIDGE
PWSID: WA53AD193
66 served
SUNSET DOMESTIC WATER ASSN
PWSID: WA5386100
60 served
Canyon Farm Camp
PWSID: WA53AD564
96 served
Graystone WS
PWSID: WA53AD688
94 served
KEPPS ACRES ASSOCIATION
PWSID: WA5317189
35 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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