Is Pottstown, PA Tap Water Safe? Quality & Contaminants

What was found in Pottstown'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
Nitrate	3100 µg/L 31% of the EPA limit 10000 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Fluoride	800 µg/L 20% of the EPA limit 4000 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Copper	268.75 µg/L 21% of the EPA limit 1300 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
TTHM	93.52 µg/L 117% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Chloroform	59.9 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	53.71 µg/L 90% of the EPA limit 60 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Dichloroacetic Acid	31.8 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Trichloroacetic Acid	26.4 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Bromodichloromethane	25.5 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Dibromochloromethane	14.675 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Lithium	10.2 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2025	1/1	UCMR-5
Monochloroacetic Acid	6.4 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Lead	6 µg/L 40% of the EPA limit 15 µg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Dibromoacetic Acid	2 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Bromoform	1.8 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Monobromoacetic Acid	1 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2019	1/1	SYR4
Pfba	0.0126 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2025	1/1	UCMR-5
Pfpea	0.0074 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2025	1/1	UCMR-5
Pfhxa	0.0059 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2025	1/1	UCMR-5
PFBS	0.0050 µg/L No EPA limit set Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 people · 2025	1/1	UCMR-5
Lead	0.00090 mg/L 6% of the EPA limit 0.0150 mg/L Main supplier: POTTSTOWN BOROUGH WATER AUTH · 36,000 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 Pottstown

Supplier	Population served
POTTSTOWN BOROUGH WATER AUTH	36,000

Frequently asked questions about Pottstown tap water

Is Pottstown tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Pottstown. 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 Pottstown?

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

What contaminants are in Pottstown's water?

The contaminants EPA monitoring detected in Pottstown include Nitrate, Fluoride, Copper, TTHM, Chloroform. 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.