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Water system · PWSID MD0060007

TOWN OF MOUNT AIRY

MOUNT AIRY, MD · ~9,890 people served

Check your exact address → MOUNT AIRY overview
69
Fair
PurityRadar safety score

PWSID

MD0060007

State

Maryland

City

MOUNT AIRY

Population served

9,890

Primary source

Groundwater

Score history

▼ 31 points — the score moved from 100 to 69 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 69

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

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Oct 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

5.9 ppt

limit 4 ppt

Above EPA limit · 1.5×

PFOA

Perfluorooctanoic acid

4 ppt

limit 4 ppt

Near EPA limit

PFBA

12 ppt

limit —

No federal limit

PFBS

6.6 ppt

limit —

No federal limit

PFPeA

4.9 ppt

limit —

No federal limit

PFHxA

4.2 ppt

limit —

No federal limit

PFHpA

3 ppt

limit —

No federal limit

Violations & enforcement

60

Violations on record

0

Unaddressed

1

Health-based

31

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Jan 2025 Resolved
Monitoring & reporting · Fluoride began Jan 2022 Resolved
Monitoring & reporting · Fluoride began Jan 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2021 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2010 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2010 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 2001 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 2001 Resolved
Monitoring & reporting · EPA contaminant 2981 began Jan 2001 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 2001 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2001 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2001 Resolved

Recent enforcement actions

  • State action · SIF Jun 2025
  • State action · SIF Jun 2025
  • State action · SOX Mar 2025
  • State action · SOX Mar 2025
  • State action · SIE Feb 2025
  • State action · SIA Feb 2025
  • State action · SIE Feb 2025
  • State action · SIA Feb 2025

This profile is built from EPA public records for system MD0060007 — 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.