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Tap water quality report

Sewickley, PA

EPA monitoring detected 21 contaminants across the 2 water suppliers serving Sewickley. 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
9,000
people served
21
contaminants found
Pennsylvania rankings Lead in Pennsylvania PFAS in Pennsylvania

What was found in Sewickley'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
Nitrate
3590 µg/L 36%
of the EPA limit 10000 µg/L
 1/2 SYR4
Copper
1620 µg/L 125%
of the EPA limit, in the worst sample — 1300 µg/L
 2/2 SYR4
Fluoride
980 µg/L 25%
of the EPA limit 4000 µg/L
 1/2 SYR4
TTHM
73.1 µg/L 91%
of the EPA limit 80 µg/L
 2/2 SYR4
Chloroform
48 µg/L
No EPA limit set
 2/2 SYR4
Lead
35 µg/L 233%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
22.8 µg/L 38%
of the EPA limit 60 µg/L
 2/2 SYR4
Bromodichloromethane
22.4 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
19.8 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
9.65 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
7.34 µg/L
No EPA limit set
 2/2 SYR4
Monochloroacetic Acid
7.11 µg/L
No EPA limit set
 1/2 SYR4
Trichloroacetic Acid
4.67 µg/L
No EPA limit set
 1/2 SYR4
Dibromoacetic Acid
4.09 µg/L
No EPA limit set
 2/2 SYR4
Tetrachloroethylene
1.13 µg/L 23%
of the EPA limit 5 µg/L
 1/2 SYR4
Pfpea
0.0120 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhxa
0.0078 µg/L
No EPA limit set
 1/2 UCMR-5
Pfba
0.0066 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0057 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0055 mg/L 37%
of the EPA limit 0.0150 mg/L
 2/2 LCR
PFHXS
0.0033 µg/L
No EPA limit set
 1/2 UCMR-5
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 Sewickley

SupplierPopulation served
SEWICKLEY BORO WATER AUTH 6,800
ALEPPO TWP AUTH 2,200

Frequently asked questions about Sewickley tap water

Is Sewickley tap water safe to drink?

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

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

What contaminants are in Sewickley's water?

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