States › New Mexico › Dona Ana County

Dona Ana County, NM Water Quality

Water quality data for 15 public water systems serving Dona Ana County, New Mexico — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 15 water systems · 29 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

Dona Ana County Earns a B

Dona Ana County: 29 communities across 15 water systems. 93.1% have no open violations.

  • Median lead where detected: 1.80 ppb
  • 23 communities with a lead detection, 6 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 19 with significant inspection deficiencies
  • 93.1% of communities have no open violations
1.8 ppb
Median Lead Level
County-wide, 90th percentile
15
Water Systems
Active CWS & NTNCWS
93%
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
  • Hatch
    Not detected
    No federal limits exceeded on record
    B
  • Salem
    1.80 ppb
    No federal limits exceeded on record
    B
  • San Miguel
    Not detected
    No federal limits exceeded on record
    B
  • San Pablo
    Not detected
    No federal limits exceeded on record
    B
  • Placitas
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Sunland Park
    1.00 ppb
    2 violations currently open
    F
  • Santa Teresa
    1.00 ppb
    2 violations currently open
    F
  • Las Cruces
    2.00 ppb
    1 significant inspection deficiency
    C
  • San Ysidro
    1.90 ppb
    2 significant inspection deficiencies
    C
  • Picacho Hills
    1.90 ppb
    2 significant inspection deficiencies
    C
County Lead Level — Median 1.8 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.8 ppb — 12% of the federal action level
Systems by Lead Level
Under 5 ppb
23
No Data
6

All Cities in Dona Ana County

Las Cruces 2.00 ppb C
Sunland Park 1.00 ppb F
Anthony 2.00 ppb B
Santa Teresa 1.00 ppb F
University Park 4.00 ppb A
Vado 1.00 ppb A
San Ysidro 1.90 ppb C
Picacho Hills 1.90 ppb C
Berino 1.00 ppb A
Hatch Not detected B
Mesilla 2.90 ppb C
Radium Springs 1.90 ppb C
La Union 1.10 ppb C
Mesquite 1.00 ppb A
White Sands 1.13 ppb B
Salem 1.80 ppb B
Butterfield Park 1.00 ppb A
San Miguel Not detected B
Doña Ana 1.90 ppb C
Chamberino Not detected B
La Mesa 1.00 ppb A
Tortugas 2.00 ppb C
San Pablo Not detected B
Placitas Not detected B
Rodey Not detected B
Rincon 2.50 ppb B
Fairacres 2.00 ppb C
Organ 1.00 ppb A
Garfield 1.80 ppb B
Showing 29 cities
No active violations Active violations

About Dona Ana County Drinking Water

Dona Ana County is served by 15 water systems covering 29 communities. 93% have no open violations.

Of the communities reporting lead results, 23 recorded a detection, with a median of 1.80 ppb — 12% of the federal action level. 6 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 19 of them.

Frequently Asked Questions

Is Dona Ana County tap water safe to drink?▼
93% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Dona Ana County?▼
Among communities with a detection the median is 1.80 ppb, 12% of the 15 ppb action level. 6 reported none detected and 0 reported no result.
How many water systems serve Dona Ana County?▼
15 community water systems serve 29 communities here.
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