Tap WaterIndex

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Tap water quality report

Mars, PA

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Mars. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
10,656
people served
17
contaminants found
Pennsylvania rankings Lead in Pennsylvania PFAS in Pennsylvania

What was found in Mars's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
830 µg/L 64%
of the EPA limit 1300 µg/L
 2/2 SYR4
Fluoride
260 µg/L 6.5%
of the EPA limit 4000 µg/L
 1/2 SYR4
Barium
220 µg/L 11%
of the EPA limit 2000 µg/L
 1/2 SYR4
Nitrate
160 µg/L 1.6%
of the EPA limit 10000 µg/L
 1/2 SYR4
TTHM
100 µg/L 125%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Chloroform
60.6 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
32.8 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
29.4 µg/L 49%
of the EPA limit 60 µg/L
 2/2 SYR4
Dibromochloromethane
28.5 µg/L
No EPA limit set
 2/2 SYR4
Lead
14 µg/L 93%
of the EPA limit 15 µg/L
 2/2 SYR4
Dichloroacetic Acid
12.2 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
12 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
10 µg/L
No EPA limit set
 2/2 SYR4
cis-1,2-Dichloroethylene
3.48 µg/L 5%
of the EPA limit 70 µg/L
 1/2 SYR4
Dibromoacetic Acid
3 µg/L
No EPA limit set
 2/2 SYR4
Monochloroacetic Acid
2.33 µg/L
No EPA limit set
 2/2 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 2/2 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 single worst sample on record — 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 Mars

SupplierPopulation served
MUNICIPAL WATER AUTH ADAMS TWP 8,700
MARS BOROUGH WATER WORKS 1,956

Frequently asked questions about Mars tap water

Is Mars tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Mars. 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 Mars?

2 public water suppliers report drinking-water monitoring for Mars, Pennsylvania to the EPA. Each is listed above with its population served.

What contaminants are in Mars's water?

The contaminants EPA monitoring detected in Mars include Copper, Fluoride, Barium, Nitrate, TTHM. The full list, with the highest level found 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.