States › Washington › Spokane County

Spokane County, WA Water Quality

Water quality data for 19 public water systems serving Spokane County, Washington — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 19 water systems · 21 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Spokane County Earns a A

Spokane County: 21 communities across 19 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.40 ppb
  • 18 communities with a lead detection, 3 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.4 ppb
Median Lead Level
County-wide, 90th percentile
19
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Spokane
    2.00 ppb
    No federal limits exceeded on record
    A
  • Cheney
    1.30 ppb
    No federal limits exceeded on record
    A
  • Fairwood
    1.30 ppb
    No federal limits exceeded on record
    A
  • Liberty Lake
    1.50 ppb
    No federal limits exceeded on record
    A
  • Otis Orchards-East Farms
    1.30 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Spokane Valley
    20.80 ppb
    Lead above the 15 ppb action level
    C
  • Fairchild AFB
    4.20 ppb
    PFAS above the limit at 1 of 2 sampling points
    B
  • Millwood
    5.40 ppb
    1 health-based violation since 2015
    B
  • Rockford
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Airway Heights
    11.10 ppb
    Lead at 11.10 ppb, above a third of the action level
    A
County Lead Level — Median 1.4 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.4 ppb — 9.3% of the federal action level
Systems by Lead Level
Under 5 ppb
15
5 – 10 ppb
1
10 – 15 ppb
2
No Data
3

All Cities in Spokane County

Spokane 2.00 ppb A
Spokane Valley 20.80 ppb C
Cheney 1.30 ppb A
Fairwood 1.30 ppb A
Liberty Lake 1.50 ppb A
Airway Heights 11.10 ppb A
Otis Orchards-East Farms 1.30 ppb A
Country Homes 1.30 ppb A
Mead 1.30 ppb A
Medical Lake 1.10 ppb A
Deer Park 1.60 ppb A
Town and Country 1.20 ppb A
Fairchild AFB 4.20 ppb B
Millwood 5.40 ppb B
Fairfield Not detected B
Green Bluff 1.70 ppb B
Rockford Not detected B
Four Lakes 0.60 ppb B
Spangle 0.50 ppb B
Latah 2.40 ppb B
Waverly Not detected B
Showing 21 cities
No active violations Active violations

About Spokane County Drinking Water

Spokane County is served by 19 water systems covering 21 communities. No community here has an open violation on record.

Of the communities reporting lead results, 18 recorded a detection, with a median of 1.40 ppb — 9% of the federal action level. 3 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 21 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Spokane County tap water safe to drink?▼
No community in Spokane County has an open violation on record. 1 of 21 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Spokane County?▼
Among communities with a detection the median is 1.40 ppb, 9% of the 15 ppb action level. 3 reported none detected and 0 reported no result.
How many water systems serve Spokane County?▼
19 community water systems serve 21 communities here.
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