States › Texas › Cameron County

Cameron County, TX Water Quality

Water quality data for 20 public water systems serving Cameron County, Texas — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 20 water systems · 53 cities
✅
Excellent — All Systems Performing Well

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

A

Cameron County Earns a A

Cameron County: 53 communities across 20 water systems. 98.1% have no open violations.

  • Median lead where detected: 1.60 ppb
  • 6 communities with a lead detection, 47 reporting none detected
  • 2 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 98.1% of communities have no open violations
1.6 ppb
Median Lead Level
County-wide, 90th percentile
20
Water Systems
Active CWS & NTNCWS
98%
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
  • Harlingen
    Not detected
    No federal limits exceeded on record
    A
  • Primera
    Not detected
    No federal limits exceeded on record
    A
  • Palm Valley
    1.12 ppb
    No federal limits exceeded on record
    B
  • South Point
    Not detected
    No federal limits exceeded on record
    B
  • Las Palmas II
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Rio Hondo
    Not detected
    1 violation currently open
    D
  • Los Fresnos
    1.76 ppb
    Copper above the 1,300 ppb action level
    C
  • Brownsville
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    B
  • Cameron Park
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    B
  • Solis
    1.60 ppb
    11 health-based violations since 2015
    B
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
6
No Data
47

All Cities in Cameron County

Brownsville Not detected B
Harlingen Not detected A
San Benito Not detected B
La Feria 1.60 ppb B
Los Fresnos 1.76 ppb C
Cameron Park Not detected B
Primera Not detected A
Laureles Not detected A
Laguna Vista Not detected B
La Paloma Not detected B
Port Isabel Not detected B
Rancho Viejo Not detected B
Santa Rosa Not detected B
Combes Not detected B
South Padre Island Not detected B
Encantada-Ranchito-El Calaboz Not detected B
Rio Hondo Not detected D
Palm Valley 1.12 ppb B
Palmer Not detected B
South Point Not detected B
Olmito Not detected A
Laguna Heights Not detected B
Los Indios Not detected B
Las Palmas II Not detected A
Arroyo Colorado Estates Not detected A
Rice Tracts Not detected B
La Tina Ranch Not detected A
Indian Lake 3.72 ppb B
Reid Hope King Not detected B
Green Valley Farms Not detected A
Santa Maria Not detected A
Juarez Not detected A
Villa Pancho Not detected B
Bayview Not detected A
Bluetown Not detected A
San Pedro Not detected B
Arroyo Gardens Not detected A
Iglesia Antigua Not detected A
Chula Vista Not detected A
Rangerville Not detected B
Ratamosa Not detected B
Lozano Not detected A
Lago Not detected B
Villa del Sol Not detected A
Tierra Bonita Not detected B
Yznaga Not detected B
Lasana Not detected A
Bixby Not detected B
Orason Not detected A
Del Mar Heights 1.20 ppb B
El Camino Angosto Not detected B
La Feria North Not detected B
Solis 1.60 ppb B
Showing 53 cities
No active violations Active violations

About Cameron County Drinking Water

Cameron County is served by 20 water systems covering 53 communities. 98% have no open violations.

Of the communities reporting lead results, 6 recorded a detection, with a median of 1.60 ppb — 11% of the federal action level. 47 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 of 53 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Cameron County tap water safe to drink?▼
98% of communities have no open violation. 2 of 53 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Cameron County?▼
Among communities with a detection the median is 1.60 ppb, 11% of the 15 ppb action level. 47 reported none detected and 0 reported no result.
How many water systems serve Cameron County?▼
20 community water systems serve 53 communities here.
← Back to Texas water quality overview