States ›Maryland ›Carroll County ›Mount Airy

Mount Airy, MD Tap Water Quality 2026

Water quality report for Mount Airy, MD — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Mount Airy's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Town Of Mount Airy PWSID: MD0060007 Updated: 2026 Q2
⚠️

PFAS above the federal limit at 3 of 5 sampling points

Lead is 1.40 ppb, 9% of the action level and no violations are open. However, PFAS exceeds the federal limit at 3 of 5 sampling points, running as high as 2.11 times the limit.

C

Mount Airy earns a C for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.40 ppb — 9% of the federal action level
PFAS above the federal limit at 3 of 5 sampling points
4 violations since 2015, 0 health-based
No violations currently open
Mount Airy's lead level vs. all Maryland community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.40 ppb — 9% of the federal action level
✓ Lower lead than 76% of Maryland utilities
Population Served
9216
~3326 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
4 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
9% of EPA action level
1.40 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.40 ppb, 9% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2022–2024 Resolved
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2022–2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

4 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Town Of Mount Airy
PWSID MD0060007
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 9,216
Service connections 3,326
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Mount Airy tap water safe to drink? ▼
It meets most federal standards, but PFAS exceeds the federal limit at 3 of 5 sampling points. No violations are currently open. Lead is 1.40 ppb, 9% of the action level.
Does Mount Airy water have PFAS? ▼
Yes. PFAS exceeds the federal limit at 3 of 5 sampling points, running as high as 2.11 times the limit. Limits are enforced on a running annual average at each sampling point, not on a single sample.
Who supplies water to Mount Airy? ▼
Town Of Mount Airy (PWSID MD0060007). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-10-09. No significant deficiencies were recorded.

What Should Mount Airy Residents Do?

1
Consider a reverse-osmosis filter
Reverse osmosis removes more than 95% of PFAS. Standard carbon pitchers do not.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Maryland

Eldersburg, Md Tap Water Quality 2026 Carroll Westminster, Md Tap Water Quality 2026 Carroll Taneytown, Md Tap Water Quality 2026 Carroll Hampstead, Md Tap Water Quality 2026 Carroll Manchester, Md Tap Water Quality 2026 Carroll Sykesville, Md Tap Water Quality 2026 Carroll