States › Maryland › Anne Arundel County

Anne Arundel County, MD Water Quality

Water quality data for 9 public water systems serving Anne Arundel County, Maryland — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 9 water systems · 26 cities
✅
Excellent — All Systems Performing Well

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

A

Anne Arundel County Earns a A

Anne Arundel County: 26 communities across 9 water systems. 100.0% have no open violations.

  • Median lead where detected: 6.30 ppb
  • 3 communities with a lead detection, 23 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
6.3 ppb
Median Lead Level
County-wide, 90th percentile
9
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
  • Glen Burnie
    Not detected
    No federal limits exceeded on record
    A
  • Severn
    Not detected
    No federal limits exceeded on record
    A
  • Odenton
    Not detected
    No federal limits exceeded on record
    A
  • Severna Park
    Not detected
    No federal limits exceeded on record
    A
  • Pasadena
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Annapolis
    6.30 ppb
    Lead at 6.30 ppb, above a third of the action level
    A
  • Annapolis Neck
    6.30 ppb
    Lead at 6.30 ppb, above a third of the action level
    A
  • Mayo
    3.10 ppb
    2 health-based violations since 2015
    B
  • Crownsville
    Not detected
    1 health-based violation since 2015
    B
  • Glen Burnie
    Not detected
    No federal limits exceeded on record
    A
County Lead Level — Median 6.3 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 6.3 ppb — 42% of the federal action level
Systems by Lead Level
Under 5 ppb
1
5 – 10 ppb
2
No Data
23

All Cities in Anne Arundel County

Glen Burnie Not detected A
Severn Not detected A
Odenton Not detected A
Annapolis 6.30 ppb A
Severna Park Not detected A
Pasadena Not detected A
Crofton Not detected A
Arnold Not detected A
Maryland City Not detected A
Parole Not detected A
Brooklyn Park Not detected A
Ferndale Not detected A
Riviera Beach Not detected A
Linthicum Not detected A
Edgewater Not detected A
Cape St. Claire Not detected A
Lake Shore Not detected A
Fort Meade Not detected A
Jessup Not detected A
Riva Not detected A
Herald Harbor Not detected B
Annapolis Neck 6.30 ppb A
Gambrills Not detected A
Mayo 3.10 ppb B
Crownsville Not detected B
Naval Academy Not detected A
Showing 26 cities
No active violations Active violations

About Anne Arundel County Drinking Water

Anne Arundel County is served by 9 water systems covering 26 communities. No community here has an open violation on record.

Of the communities reporting lead results, 3 recorded a detection, with a median of 6.30 ppb — 42% of the federal action level. 23 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 no significant deficiencies.

Frequently Asked Questions

Is Anne Arundel County tap water safe to drink?▼
No community in Anne Arundel County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Anne Arundel County?▼
Among communities with a detection the median is 6.30 ppb, 42% of the 15 ppb action level. 23 reported none detected and 0 reported no result.
How many water systems serve Anne Arundel County?▼
9 community water systems serve 26 communities here.
← Back to Maryland water quality overview