Is Collegeville, PA Tap Water Safe? Quality & Contaminants

What was found in Collegeville'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	3301.5 µg/L 33% of the EPA limit 10000 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2019	1/1	SYR4
Barium	530.25 µg/L 27% of the EPA limit 2000 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Copper	405.8 µg/L 31% of the EPA limit 1300 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2019	1/1	SYR4
Cadmium	5.2 µg/L 104% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Di(2-ethylhexyl) Phthalate	4.331 µg/L 72% of the EPA limit 6 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2019	1/1	SYR4
Combined Uranium	3.9485 µg/L 13% of the EPA limit 30 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2019	1/1	SYR4
TTHM	3.185 µg/L 4% of the EPA limit 80 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Arsenic	3 µg/L 30% of the EPA limit 10 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Chromium	2 µg/L 2% of the EPA limit 100 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Lead	1.8 µg/L 12% of the EPA limit 15 µg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2019	1/1	SYR4
Dibromochloromethane	1.765 µg/L No EPA limit set Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Bromodichloromethane	1.36 µg/L No EPA limit set Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Bromoform	1.2 µg/L No EPA limit set Main supplier: YERKES WATER ASSOCIATION · 165 people · 2018	1/1	SYR4
Lead	0.1600 mg/L 1067% above the EPA limit of 0.0150 mg/L Main supplier: YERKES WATER ASSOCIATION · 165 people · 2010	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 Collegeville

Supplier	Population served
YERKES WATER ASSOCIATION	165

Frequently asked questions about Collegeville tap water

Is Collegeville tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Collegeville. 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 Collegeville?

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

What contaminants are in Collegeville's water?

The contaminants EPA monitoring detected in Collegeville include Nitrate, Barium, Copper, Cadmium, Di(2-ethylhexyl) Phthalate. 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.