Is Northampton, PA Tap Water Safe? Quality & Contaminants

What was found in Northampton'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	1800 µg/L 18% of the EPA limit 10000 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019 Highest in the city: 11780 µg/L — WHISPERING HOLLOW-SOUTH MHP · 400 people · 2019	3/3	SYR4
Copper	329.55 µg/L 25% of the EPA limit 1300 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019 Highest in the city: 1612 µg/L — MILLER MANOR HOMEOWNERS ASSOC · 90 people · 2019	3/3	SYR4
Fluoride	782 µg/L 20% of the EPA limit 4000 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	1/3	SYR4
TTHM	79.19 µg/L 99% of the EPA limit 80 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	3/3	SYR4
Chloroform	67.86 µg/L No EPA limit set Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	3/3	SYR4
Total Haloacetic Acids (HAA5)	50.85 µg/L 85% of the EPA limit 60 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	3/3	SYR4
Barium	25.2 µg/L 1.3% of the EPA limit 2000 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019 Highest in the city: 42 µg/L — WHISPERING HOLLOW-SOUTH MHP · 400 people · 2018	2/3	SYR4
Trichloroacetic Acid	27.275 µg/L No EPA limit set Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	2/3	SYR4
Dichloroacetic Acid	27.09 µg/L No EPA limit set Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	1/3	SYR4
Chromium	12 µg/L 12% of the EPA limit 100 µg/L Highest in the city: MILLER MANOR HOMEOWNERS ASSOC · 90 people · 2012	2/3	SYR4
Lead	11.47 µg/L 76% of the EPA limit 15 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	3/3	SYR4
Bromodichloromethane	10.265 µg/L No EPA limit set Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	3/3	SYR4
Cyanide	5 µg/L 2.5% of the EPA limit 200 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	1/3	SYR4
Toluene	4.095 µg/L 0.4% of the EPA limit 1000 µg/L Highest in the city: MILLER MANOR HOMEOWNERS ASSOC · 90 people · 2019	1/3	SYR4
Selenium	4 µg/L 8% of the EPA limit 50 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	1/3	SYR4
Dibromochloromethane	1.865 µg/L No EPA limit set Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019 Highest in the city: 2.475 µg/L — MILLER MANOR HOMEOWNERS ASSOC · 90 people · 2019	3/3	SYR4
Nitrite	1 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2019	1/3	SYR4
Bromoform	0.8900 µg/L No EPA limit set Highest in the city: MILLER MANOR HOMEOWNERS ASSOC · 90 people · 2019	2/3	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORTHAMPTON BORO MUNI AUTH · 40,000 people · 2025 Highest in the city: 0.0090 mg/L — WHISPERING HOLLOW-SOUTH MHP · 400 people · 1996	3/3	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 Northampton

Supplier	Population served
NORTHAMPTON BORO MUNI AUTH	40,000
WHISPERING HOLLOW-SOUTH MHP	400
MILLER MANOR HOMEOWNERS ASSOC	90

Frequently asked questions about Northampton tap water

Is Northampton tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Northampton. 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 Northampton?

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

What contaminants are in Northampton's water?

The contaminants EPA monitoring detected in Northampton include Nitrate, Copper, Fluoride, 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.