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Henry County, IL Water Quality

Water quality data for 16 public water systems serving Henry County, Illinois — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 16 water systems · 16 cities
⚠️
Caution Advised — Some Systems Need Attention

Some systems have elevated lead levels or active violations. Check your specific city below.

C

Henry County Earns a C

Henry County: 16 communities across 16 water systems. 93.8% have no open violations.

  • Median lead where detected: 3.15 ppb
  • 10 communities with a lead detection, 6 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 14 with significant inspection deficiencies
  • 93.8% of communities have no open violations
3.15 ppb
Median Lead Level
County-wide, 90th percentile
16
Water Systems
Active CWS & NTNCWS
93%
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
  • Alpha
    7.60 ppb
    Lead at 7.60 ppb, above a third of the action level
    B
  • Colona
    1.80 ppb
    2 significant inspection deficiencies
    B
  • Galva
    Not detected
    2 significant inspection deficiencies
    B
  • Woodhull
    0.70 ppb
    1 significant inspection deficiency
    B
  • Orion
    5.50 ppb
    1 health-based violation since 2015
    B
⚠ Needs Attention
  • Atkinson
    Not detected
    1 violation currently open
    D
  • Lynn Center
    25.00 ppb
    Lead above the 15 ppb action level
    D
  • Cambridge
    1.30 ppb
    Copper above the 1,300 ppb action level
    C
  • Ophiem
    3.00 ppb
    5 significant inspection deficiencies
    C
  • Geneseo
    Not detected
    Copper above the 1,300 ppb action level
    C
County Lead Level — Median 3.15 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3.15 ppb — 21% of the federal action level
Systems by Lead Level
Under 5 ppb
7
5 – 10 ppb
2
10 – 15 ppb
1
No Data
6

All Cities in Henry County

Kewanee 3.30 ppb B
Geneseo Not detected C
Colona 1.80 ppb B
Galva Not detected B
Cambridge 1.30 ppb C
Orion 5.50 ppb B
Atkinson Not detected D
Annawan Not detected C
Woodhull 0.70 ppb B
Alpha 7.60 ppb B
Andover 3.70 ppb B
Bishop Hill 1.30 ppb B
Lynn Center 25.00 ppb D
Ophiem 3.00 ppb C
Osco Not detected C
Cleveland Not detected C
Showing 16 cities
No active violations Active violations

About Henry County Drinking Water

Henry County is served by 16 water systems covering 16 communities. 94% have no open violations.

Of the communities reporting lead results, 10 recorded a detection, with a median of 3.15 ppb — 21% 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 14 of them.

Frequently Asked Questions

Is Henry County tap water safe to drink?▼
94% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Henry County?▼
Among communities with a detection the median is 3.15 ppb, 21% of the 15 ppb action level. 6 reported none detected and 0 reported no result.
How many water systems serve Henry County?▼
16 community water systems serve 16 communities here.
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