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Water system · PWSID NM3505929

COSTILLA MDWCA

COSTILLA, NM · ~244 people served

Check your exact address → COSTILLA overview
100
Excellent
PurityRadar safety score

PWSID

NM3505929

State

New Mexico

City

COSTILLA

Population served

244

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

75

Violations on record

9

Unaddressed

19

Health-based

187

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Jul 2024 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Jul 2024 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Jul 2024 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Jul 2024 Unaddressed
Other · EPA contaminant 0700 began Apr 2024 Unaddressed
Treatment technique · EPA contaminant 0700 health-based began Oct 2012 Unaddressed
Other · EPA contaminant 7000 began Jul 2002 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved

Recent enforcement actions

  • State action · SOX Dec 2025
  • State action · SOX Dec 2025
  • State action · SIA Aug 2025
  • State action · SOX Aug 2025
  • State action · SIE Mar 2025
  • State action · SIE Mar 2025
  • State action · SIA Mar 2025
  • State action · SIA Mar 2025

This profile is built from EPA public records for system NM3505929 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.