States › Illinois › Effingham County

Effingham County, IL Water Quality

Water quality data for 4 public water systems serving Effingham County, Illinois — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 4 water systems · 10 cities
✅
Excellent — All Systems Performing Well

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

A

Effingham County Earns a A

Effingham County: 10 communities across 4 water systems. 100.0% have no open violations.

  • Median lead where detected: 4.60 ppb
  • 1 communities with a lead detection, 9 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 3 with significant inspection deficiencies
  • 100.0% of communities have no open violations
4.6 ppb
Median Lead Level
County-wide, 90th percentile
4
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
  • Altamont
    Not detected
    1 health-based violation since 2015
    A
  • Teutopolis
    Not detected
    1 health-based violation since 2015
    A
  • Dieterich
    Not detected
    1 health-based violation since 2015
    A
  • Watson
    Not detected
    1 health-based violation since 2015
    A
  • Mason
    Not detected
    1 health-based violation since 2015
    A
⚠ Needs Attention
  • Beecher City
    Not detected
    3 significant inspection deficiencies
    C
  • Effingham
    4.60 ppb
    2 significant inspection deficiencies
    A
  • Edgewood
    Not detected
    1 significant inspection deficiency
    B
  • Altamont
    Not detected
    1 health-based violation since 2015
    A
  • Teutopolis
    Not detected
    1 health-based violation since 2015
    A
County Lead Level — Median 4.6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 4.6 ppb — 30.7% of the federal action level
Systems by Lead Level
Under 5 ppb
1
No Data
9

All Cities in Effingham County

Effingham 4.60 ppb A
Altamont Not detected A
Teutopolis Not detected A
Dieterich Not detected A
Watson Not detected A
Mason Not detected A
Beecher City Not detected C
Edgewood Not detected B
Shumway Not detected A
Montrose Not detected A
Showing 10 cities
No active violations Active violations

About Effingham County Drinking Water

Effingham County is served by 4 water systems covering 10 communities. No community here has an open violation on record.

Of the communities reporting lead results, 1 recorded a detection, with a median of 4.60 ppb — 31% of the federal action level. 9 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 Effingham County tap water safe to drink?▼
No community in Effingham County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Effingham County?▼
Among communities with a detection the median is 4.60 ppb, 31% of the 15 ppb action level. 9 reported none detected and 0 reported no result.
How many water systems serve Effingham County?▼
4 community water systems serve 10 communities here.
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