Tapcensus

Water quality for ZIP code 99216

ZIP 99216 covers Spokane Valley in Spokane County, Washington, one of 40 ZIP codes in the county. 166 active public water systems serve the county; 72 had an EPA violation in the past three years.

Most likely your provider

Trentwood Irrigation District 3 WA5389250 · Community water system · Ground water
Serves 4,228 people Rules violated, past 3 years 3 Last sanitary survey Nov 1, 2021 Distance 2.7 mi

Your location is within the outer bounds of this system's EPA service area.

View system details EPA facility report

Other community water systems in Spokane County

86 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Pinecroft Mobile Home Park
 248 0 1.4 mi
Irvin Water District #6
 4,150 1 1.4 mi
Consolidated Irrig Dist 19 System 1
 9,434 0 1.5 mi
Modern Electric Water CO
 18,487 0 2.4 mi
Millwood City of
 1,925 1 2.9 mi
Pioneer Water Company
 443 4 3.0 mi
Timberline Mobile Home Park
 240 0 3.7 mi
Pasadena Park Irr Dist 17
 6,269 1 3.7 mi
Spo CO Water Dist 3 Sys 1
 19,035 0 3.7 mi
Hutchinson Irrigation Dist #16
 2,209 0 3.7 mi
Orchard Avenue Irrigation Dist 6
 4,330 0 4.0 mi
Model Irrigation Dist #18
 7,903 2 4.0 mi
Consolidated Irrig Dist 19 System 2
 21,220 1 4.1 mi
East Spokane Water Dist 1
 4,285 1 5.1 mi
Vera Water & Power
 24,692 1 5.4 mi
Carnhope Irrigation District 7
 1,602 1 6.1 mi
Liberty Lake Sewer & Water District
 14,500 0 6.3 mi
Mount ST Michaels School & Church
 162 3 6.5 mi
North Spokane Irrigation District 8
 2,214 0 7.4 mi
Moab Irrigation Dist #20
 1,790 0 8.0 mi
Spo CO Water Dist 3 Sys 4
 6,233 0 8.3 mi
Green Bluff Water Assn
 218 1 9.6 mi
Spo CO Water Dist 3 Sys 3
 3,768 0 9.8 mi
Whitworth University
 1,200 1 10.5 mi
Spo CO Water Dist 3 Sys 5
 485 0 10.9 mi
All 87 community water systems in Spokane County
Non-community systems in Spokane County (79: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Kaiser Alum Trentwood Works
 954 1 0
Honeywell Electronic Mfg LLC
 350 0 0
Cosv Sullivan Park
 32 0 0
Central Pre Mix Sullivan RD
 130 2 0
Spokane Business & Industrial Park
 5,000 1 0
Spokane Christian Center
 250 0 0
Camp Sekani
 102 0 0
Puebla Restaurant
 100 2 0
Twin Cedars Water System
 46 0 0
Zephyr Lodge
 28 0 0
Lakes Community Church
 147 1 0
Knife River Public Water Supply
 151 1 0
Big Barn Brewing
 32 2 0
Mutual Materials Company
 55 5 0
Providence Shmc
 3,199 0 0
Spokane CO Fire Dist 8 Station 2
 70 0 0
Crosswind Church
 27 0 0
Freeman School Dist #358
 900 0 0
Commellinis Restaurant
 46 1 0
Wsdp Riverside SP Equestrian
 356 1 0
Spokane Rifle Club South
 18 0 0
Spokane Rifle Club North
 19 0 0
Great Northern School Dist #312
 47 0 0
Bear Creek
 1 0 0
Wsdp Seven Mile Riverside State Prk
 250 0 0
Spo CO Fish Lake Park
 306 0 0
Wsdp Riverside SP Orv Area
 651 0 0
Riverside SD Chattaroy Elementary
 306 0 0
Wildrose RV Park
 102 0 0
Whitley #5
 100 2 0
Wsdp Mt Spokane St Park #3
 679 1 0
Nine Mile Store
 53 1 0
Andrus Water System
 41 1 0
Wsdp Riverside State Park Shic
 26 0 0
Mount Spokane Ski #1
 207 1 0
White Bluff Jpra
 165 0 0
Mount Spokane Ski #2
 1,301 1 0
Urm
 25 0 0
Overland Station
 54 0 0
Spo CO Bear Lake Park
 100 0 0
Nine Mile Falls Community Church
 45 0 0
Nine Mile Resort
 327 0 0
Countryside 7 Day Adventist Elmntry
 165 0 0
Rlp Enterprises
 38 0 0
Cheney Public Schools
 36 0 0
Riverside SD Central Site Schools
 1,320 0 0
Hodgsons Riverside Service
 222 0 0
Shaky Grounds Espresso
 133 0 0
Liberty School District #362
 486 1 0
Rubys on Silver Lake
 31 2 0
All non-community systems
About this data

Water systems are matched to Spokane County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.