States › Iowa › Jefferson County

Jefferson County, IA Water Quality

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

📅 2026 Report 🔄 Data updated 2026 Q2 📍 4 water systems · 5 cities
✅
Excellent — All Systems Performing Well

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

A

Jefferson County Earns a A

Jefferson County: 5 communities across 4 water systems. 100.0% have no open violations.

  • Median lead where detected: none detected
  • 0 communities with a lead detection, 5 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
—
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
  • Fairfield
    Not detected
    No federal limits exceeded on record
    A
  • Batavia
    Not detected
    No federal limits exceeded on record
    B
  • Lockridge
    Not detected
    No federal limits exceeded on record
    B
  • Libertyville
    Not detected
    No federal limits exceeded on record
    B
  • Maharishi Vedic City
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Fairfield
    Not detected
    No federal limits exceeded on record
    A
  • Batavia
    Not detected
    No federal limits exceeded on record
    B
  • Lockridge
    Not detected
    No federal limits exceeded on record
    B
  • Libertyville
    Not detected
    No federal limits exceeded on record
    B
  • Maharishi Vedic City
    Not detected
    No federal limits exceeded on record
    B

All Cities in Jefferson County

Fairfield Not detected A
Batavia Not detected B
Lockridge Not detected B
Libertyville Not detected B
Maharishi Vedic City Not detected B
Showing 5 cities
No active violations Active violations

About Jefferson County Drinking Water

Jefferson County is served by 4 water systems covering 5 communities. No community here has an open violation on record.

Lead was not detected in any community in Jefferson County that reported a result.

No community here has PFAS above the federal limit on record. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Jefferson County tap water safe to drink?▼
No community in Jefferson County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Jefferson County?▼
No community reported a lead detection.
How many water systems serve Jefferson County?▼
4 community water systems serve 5 communities here.
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