Is Masontown, PA Tap Water Safe? Quality & Contaminants

What was found in Masontown'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Monochloroacetic Acid	147.5 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
TTHM	108.1 µg/L 135% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Copper	74.9 µg/L 5.8% of the EPA limit 1300 µg/L Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Chloroform	62.11 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	39.425 µg/L 66% of the EPA limit 60 µg/L Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Bromodichloromethane	29.15 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Dichloroacetic Acid	17.44 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Trichloroacetic Acid	17.17 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Dibromochloromethane	16.669 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Bromoform	10.116 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Lead	8 µg/L 53% of the EPA limit 15 µg/L Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Dibromoacetic Acid	3.45 µg/L No EPA limit set Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2019	1/1	SYR4
Lead	0.0011 mg/L 7.1% of the EPA limit 0.0150 mg/L Main supplier: MASONTOWN MUNI WATER WORKS · 3,841 people · 2025	1/1	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 Masontown

Supplier	Population served
MASONTOWN MUNI WATER WORKS	3,841

Frequently asked questions about Masontown tap water

Is Masontown tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Masontown. 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 Masontown?

1 public water supplier report drinking-water monitoring for Masontown, Pennsylvania to the EPA. Each is listed above with its population served.

What contaminants are in Masontown's water?

The contaminants EPA monitoring detected in Masontown include Monochloroacetic Acid, TTHM, Copper, Chloroform, Total Haloacetic Acids (HAA5). 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.