States › Illinois › Wayne County

Wayne County, IL Water Quality

Water quality data for 7 public water systems serving Wayne County, Illinois — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 7 water systems · 7 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Wayne County Earns a B

Wayne County: 7 communities across 7 water systems. 85.7% have no open violations.

  • Median lead where detected: 12.00 ppb
  • 1 communities with a lead detection, 6 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 3 with significant inspection deficiencies
  • 85.7% of communities have no open violations
12 ppb
Median Lead Level
County-wide, 90th percentile
7
Water Systems
Active CWS & NTNCWS
85%
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
  • Wayne City
    Not detected
    No federal limits exceeded on record
    B
  • Jeffersonville
    Not detected
    No federal limits exceeded on record
    B
  • Fairfield
    Not detected
    1 health-based violation since 2015
    A
  • Cisne
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Keenes
    Not detected
    3 significant inspection deficiencies
    B
⚠ Needs Attention
  • Sims
    Not detected
    1 violation currently open
    D
  • Mount Erie
    12.00 ppb
    1 significant inspection deficiency
    C
  • Keenes
    Not detected
    3 significant inspection deficiencies
    B
  • Cisne
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Fairfield
    Not detected
    1 health-based violation since 2015
    A
County Lead Level — Median 12 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 12 ppb — 80% of the federal action level
Systems by Lead Level
10 – 15 ppb
1
No Data
6

All Cities in Wayne County

Fairfield Not detected A
Wayne City Not detected B
Cisne Not detected B
Jeffersonville Not detected B
Sims Not detected D
Mount Erie 12.00 ppb C
Keenes Not detected B
Showing 7 cities
No active violations Active violations

About Wayne County Drinking Water

Wayne County is served by 7 water systems covering 7 communities. 86% have no open violations.

Of the communities reporting lead results, 1 recorded a detection, with a median of 12.00 ppb — 80% of the federal action level. 6 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 3 of them.

Frequently Asked Questions

Is Wayne County tap water safe to drink?▼
86% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Wayne County?▼
Among communities with a detection the median is 12.00 ppb, 80% of the 15 ppb action level. 6 reported none detected and 0 reported no result.
How many water systems serve Wayne County?▼
7 community water systems serve 7 communities here.
← Back to Illinois water quality overview