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St. Charles Parish, LA Water Quality

Water quality data for 1 public water systems serving St. Charles Parish, Louisiana — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 1 water systems · 14 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

St. Charles Parish Earns a B

St. Charles Parish: 14 communities across 1 water system. 100.0% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 14 communities with a lead detection, 0 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 14 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
1
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
  • Luling
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Destrehan
    2.00 ppb
    3 significant inspection deficiencies
    B
  • St. Rose
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Boutte
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Hahnville
    2.00 ppb
    3 significant inspection deficiencies
    B
⚠ Needs Attention
  • Luling
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Destrehan
    2.00 ppb
    3 significant inspection deficiencies
    B
  • St. Rose
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Boutte
    2.00 ppb
    3 significant inspection deficiencies
    B
  • Hahnville
    2.00 ppb
    3 significant inspection deficiencies
    B
County Lead Level — Median 2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2 ppb — 13.3% of the federal action level
Systems by Lead Level
Under 5 ppb
14

All Cities in St. Charles Parish

Luling 2.00 ppb B
Destrehan 2.00 ppb B
St. Rose 2.00 ppb B
Boutte 2.00 ppb B
Hahnville 2.00 ppb B
Bayou Gauche 2.00 ppb B
Montz 2.00 ppb B
Des Allemands 2.00 ppb B
Norco 2.00 ppb B
Ama 2.00 ppb B
Paradis 2.00 ppb B
New Sarpy 2.00 ppb B
Killona 2.00 ppb B
Taft 2.00 ppb B
Showing 14 cities
No active violations Active violations

About St. Charles Parish Drinking Water

St. Charles Parish is served by 1 water system covering 14 communities. No community here has an open violation on record.

Of the communities reporting lead results, 14 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 0 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 St. Charles Parish tap water safe to drink?▼
No community in St. Charles Parish has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in St. Charles Parish?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve St. Charles Parish?▼
1 community water system serves 14 communities here.
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