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Bexar County, TX Water Quality

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

📅 2026 Report 🔄 Data updated 2026 Q2 📍 16 water systems · 31 cities
✅
Excellent — All Systems Performing Well

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

A

Bexar County Earns a A

Bexar County: 31 communities across 16 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.60 ppb
  • 29 communities with a lead detection, 2 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.6 ppb
Median Lead Level
County-wide, 90th percentile
16
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
  • San Antonio
    1.60 ppb
    No federal limits exceeded on record
    A
  • Timberwood Park
    1.60 ppb
    No federal limits exceeded on record
    A
  • Converse
    0.50 ppb
    No federal limits exceeded on record
    A
  • Universal City
    0.50 ppb
    No federal limits exceeded on record
    A
  • Selma
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Randolph AFB
    2.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Von Ormy
    2.00 ppb
    14 health-based violations since 2015
    B
  • Macdona
    2.00 ppb
    14 health-based violations since 2015
    B
  • Lackland AFB
    Not detected
    Copper above the 1,300 ppb action level
    A
  • Alamo Heights
    2.80 ppb
    1 health-based violation since 2015
    A
County Lead Level — Median 1.6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.6 ppb — 10.7% of the federal action level
Systems by Lead Level
Under 5 ppb
29
No Data
2

All Cities in Bexar County

San Antonio 1.60 ppb A
Timberwood Park 1.60 ppb A
Converse 0.50 ppb A
Universal City 0.50 ppb A
Selma Not detected A
Leon Valley 1.00 ppb A
Live Oak 1.48 ppb A
Lackland AFB Not detected A
Helotes 1.60 ppb A
Scenic Oaks 1.60 ppb A
Fair Oaks Ranch 2.20 ppb A
Kirby 2.00 ppb A
Alamo Heights 2.80 ppb A
Windcrest 1.40 ppb A
Sandy Oaks 1.60 ppb A
Terrell Hills 1.60 ppb A
Cross Mountain 1.60 ppb A
Hollywood Park 1.60 ppb A
Balcones Heights 1.60 ppb A
Olmos Park 1.60 ppb A
St. Hedwig 1.50 ppb A
Elmendorf 1.40 ppb A
Shavano Park 1.60 ppb A
Somerset 1.60 ppb A
Randolph AFB 2.00 ppb B
China Grove 1.60 ppb A
Hill Country Village 1.60 ppb A
Von Ormy 2.00 ppb B
Macdona 2.00 ppb B
Grey Forest 1.50 ppb B
Castle Hills 1.60 ppb A
Showing 31 cities
No active violations Active violations

About Bexar County Drinking Water

Bexar County is served by 16 water systems covering 31 communities. No community here has an open violation on record.

Of the communities reporting lead results, 29 recorded a detection, with a median of 1.60 ppb — 11% of the federal action level. 2 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 Bexar County tap water safe to drink?▼
No community in Bexar County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Bexar County?▼
Among communities with a detection the median is 1.60 ppb, 11% of the 15 ppb action level. 2 reported none detected and 0 reported no result.
How many water systems serve Bexar County?▼
16 community water systems serve 31 communities here.
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