Tap WaterIndex

← New Hampshire

Tap water quality report

Greenfield, NH

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Greenfield. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
348
people served
18
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in Greenfield'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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
250 µg/L 6.3%
of the EPA limit 4000 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
Highest in the city: 1760 µg/L — GREENFIELD COMMONS · 48 people · 2018
2/2 SYR4
Copper
280 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
2/2 SYR4
Lead
99.6 µg/L 664%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2018
1/2 SYR4
Barium
80.25 µg/L 4%
of the EPA limit 2000 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Chromium
33 µg/L 33%
of the EPA limit 100 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
2/2 SYR4
Arsenic
1.85 µg/L 19%
of the EPA limit 10 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
Highest in the city: 24 µg/L — GREENFIELD COMMONS · 48 people · 2019
2/2 SYR4
Chloroform
9.835 µg/L
No EPA limit set
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
2/2 SYR4
TTHM
4.2255 µg/L 5.3%
of the EPA limit 80 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
2.815 µg/L 4.7%
of the EPA limit 60 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
2.52 pCi/L 17%
of the EPA limit 15 pCi/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2017
1/2 SYR4
Toluene
2.45 µg/L 0.2%
of the EPA limit 1000 µg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Dichloroacetic Acid
1.865 µg/L
No EPA limit set
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Bromodichloromethane
1.43 µg/L
No EPA limit set
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.425 pCi/L 29%
of the EPA limit 5 pCi/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2017
1/2 SYR4
Trichloroacetic Acid
1 µg/L
No EPA limit set
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
1/2 SYR4
Dibromochloromethane
0.8845 µg/L
No EPA limit set
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2019
2/2 SYR4
Bromoform
0.8300 µg/L
No EPA limit set
Highest in the city: GREENFIELD COMMONS · 48 people · 2019
1/2 SYR4
Lead
0.0660 mg/L 440%
above the EPA limit of 0.0150 mg/L
Main supplier: CROTCHED MOUNTAIN SCHOOL · 300 people · 2017
1/2 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 Greenfield

SupplierPopulation served
CROTCHED MOUNTAIN SCHOOL 300
GREENFIELD COMMONS 48

Frequently asked questions about Greenfield tap water

Is Greenfield tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Greenfield. 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 Greenfield?

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

What contaminants are in Greenfield's water?

The contaminants EPA monitoring detected in Greenfield include Fluoride, Copper, Lead, Barium, Chromium. 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.