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Tap water quality report

Mount Airy, MD

EPA monitoring detected 23 contaminants across the 3 water suppliers serving Mount Airy. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
10,294
people served
23
contaminants found
Maryland rankings Lead in Maryland PFAS in Maryland

What was found in Mount Airy's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
6300 µg/L 63%
of the EPA limit 10000 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
3/3 SYR4
Nitrate-Nitrite
5500 µg/L 55%
of the EPA limit 10000 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2015
3/3 SYR4
Fluoride
1112.5 µg/L 28%
of the EPA limit 4000 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2018
1/3 SYR4
Barium
14.8 µg/L 0.7%
of the EPA limit 2000 µg/L
Highest in the city: PLEASANT VIEW NURSING HOME · 104 people · 2018
1/3 SYR4
TTHM
7.96 µg/L 10%
of the EPA limit 80 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
3/3 SYR4
Selenium
7.2 µg/L 14%
of the EPA limit 50 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
1/3 SYR4
Chloroform
3.725 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
3/3 SYR4
Combined Radium (-226 And -228)
3 pCi/L 60%
of the EPA limit 5 pCi/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2016
1/3 SYR4
Bromodichloromethane
2.6 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
3/3 SYR4
Arsenic
2.3 µg/L 23%
of the EPA limit 10 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
1/3 SYR4
Di(2-ethylhexyl) Phthalate
2.0925 µg/L 35%
of the EPA limit 6 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2018
1/3 SYR4
Total Haloacetic Acids (HAA5)
1.9 µg/L 3.2%
of the EPA limit 60 µg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2019
2/3 SYR4
Dichloroacetic Acid
1.895 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2014
1/3 SYR4
Monobromoacetic Acid
1.8 µg/L
No EPA limit set
Highest in the city: PHEASANT RIDGE ESTATES · 300 people · 2014
1/3 SYR4
Dibromochloromethane
1.585 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2015
2/3 SYR4
Pfpea
0.0227 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
Pfhxa
0.0184 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
PFOA
0.0127 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
Pfba
0.0116 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
PFBS
0.0066 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
PFOS
0.0060 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
Pfhpa
0.0059 µg/L
No EPA limit set
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2023
1/3 UCMR-5
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
Main supplier: TOWN OF MOUNT AIRY · 9,890 people · 2024
Highest in the city: 0.0020 mg/L — PLEASANT VIEW NURSING HOME · 104 people · 2021
3/3 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Mount Airy

SupplierPopulation served
TOWN OF MOUNT AIRY 9,890
PHEASANT RIDGE ESTATES 300
PLEASANT VIEW NURSING HOME 104

Frequently asked questions about Mount Airy tap water

Is Mount Airy tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Mount Airy. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Mount Airy?

3 public water suppliers report drinking-water monitoring for Mount Airy, Maryland to the EPA. Each is listed above with its population served.

What contaminants are in Mount Airy's water?

The contaminants EPA monitoring detected in Mount Airy include Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.