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Hidalgo County, TX Water Quality

Water quality data for 18 public water systems serving Hidalgo County, Texas — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 18 water systems · 58 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

Hidalgo County Earns a B

Hidalgo County: 58 communities across 18 water systems. 91.4% have no open violations.

  • Median lead where detected: 1.00 ppb
  • 26 communities with a lead detection, 32 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 91.4% of communities have no open violations
1 ppb
Median Lead Level
County-wide, 90th percentile
18
Water Systems
Active CWS & NTNCWS
91%
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
  • McAllen
    2.30 ppb
    No federal limits exceeded on record
    A
  • Mission
    Not detected
    No federal limits exceeded on record
    A
  • Pharr
    1.09 ppb
    No federal limits exceeded on record
    A
  • San Juan
    Not detected
    No federal limits exceeded on record
    A
  • Alamo
    1.00 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • La Joya
    Not detected
    2 violations currently open
    D
  • Villa Verde
    1.50 ppb
    1 violation currently open
    C
  • Weslaco
    1.50 ppb
    1 violation currently open
    C
  • Hidalgo
    1.77 ppb
    1 violation currently open
    C
  • Llano Grande
    1.50 ppb
    1 violation currently open
    C
County Lead Level — Median 1 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1 ppb — 6.7% of the federal action level
Systems by Lead Level
Under 5 ppb
26
No Data
32

All Cities in Hidalgo County

McAllen 2.30 ppb A
Mission Not detected A
Pharr 1.09 ppb A
Edinburg Not detected A
Weslaco 1.50 ppb C
San Juan Not detected A
Alamo 1.00 ppb A
Alton 1.00 ppb A
Donna 1.56 ppb A
Palmview 0.80 ppb B
Mercedes 3.74 ppb A
Hidalgo 1.77 ppb C
La Homa 1.00 ppb A
Murillo Not detected B
Salida del Sol Estates 0.80 ppb B
Penitas 0.80 ppb B
Mila Doce Not detected B
Doffing 0.80 ppb B
Elsa 1.68 ppb A
Progreso Not detected A
La Joya Not detected D
Olivarez Not detected B
Midway North Not detected B
Doolittle Not detected B
Sullivan City 0.80 ppb B
North Alamo Not detected B
South Alamo Not detected A
Citrus City 0.80 ppb B
San Carlos Not detected B
Edcouch Not detected B
Indian Hills Not detected B
Perezville 1.11 ppb B
Scissors Not detected B
Palmhurst 1.00 ppb A
Lopezville Not detected B
Midway South Not detected B
La Blanca Not detected B
Palmview South 0.80 ppb B
West Sharyland 1.00 ppb A
Monte Alto Not detected B
La Villa Not detected B
César Chávez Not detected B
Muniz Not detected B
Heidelberg Not detected B
Abram 0.80 ppb B
Hargill Not detected B
Linn Not detected A
Havana 0.80 ppb B
Granjeno Not detected A
Progreso Lakes Not detected A
Los Ebanos 0.80 ppb B
Laguna Seca Not detected B
Relampago Not detected A
La Coma Heights Not detected A
Cuevitas 0.80 ppb B
Llano Grande 1.50 ppb C
Harding Gill Tract Not detected B
Villa Verde 1.50 ppb C
Showing 58 cities
No active violations Active violations

About Hidalgo County Drinking Water

Hidalgo County is served by 18 water systems covering 58 communities. 91% have no open violations.

Of the communities reporting lead results, 26 recorded a detection, with a median of 1.00 ppb — 7% of the federal action level. 32 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 Hidalgo County tap water safe to drink?▼
91% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Hidalgo County?▼
Among communities with a detection the median is 1.00 ppb, 7% of the 15 ppb action level. 32 reported none detected and 0 reported no result.
How many water systems serve Hidalgo County?▼
18 community water systems serve 58 communities here.
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