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Tap water quality report

Greenville, NH

EPA monitoring detected 18 contaminants across the 3 water suppliers serving Greenville. 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.

3
water suppliers
1,645
people served
18
contaminants found
New Hampshire rankings Lead in New Hampshire PFAS in New Hampshire

What was found in Greenville'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
Copper
368 µg/L 28%
of the EPA limit 1300 µg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 571.36 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2017
3/3 SYR4
Nitrate
260 µg/L 2.6%
of the EPA limit 10000 µg/L
Highest in the city: FROST TRAILER PARK · 73 people · 2019
1/3 SYR4
Nitrate-Nitrite
256 µg/L 2.6%
of the EPA limit 10000 µg/L
Highest in the city: FROST TRAILER PARK · 73 people · 2017
1/3 SYR4
TTHM
84.63 µg/L 106%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 98.75 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2019
2/3 SYR4
Chloroform
75.8 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 89.75 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2019
2/3 SYR4
Lead
44.5 µg/L 297%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2018
Highest in the city: 89.455 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2017
3/3 SYR4
Total Haloacetic Acids (HAA5)
39 µg/L 65%
of the EPA limit 60 µg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
2/3 SYR4
Trichloroacetic Acid
22 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 25 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2019
2/3 SYR4
Dichloroacetic Acid
19 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
2/3 SYR4
Arsenic
11.5 µg/L 115%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Highest in the city: FROST TRAILER PARK · 73 people · 2019
1/3 SYR4
Bromodichloromethane
9.04 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 9.275 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2019
2/3 SYR4
Monobromoacetic Acid
4.5 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
1/3 SYR4
Barium
3.85 µg/L 0.2%
of the EPA limit 2000 µg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
1/3 SYR4
Monochloroacetic Acid
3.7 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
1/3 SYR4
Gross Alpha, Excl. Radon And U
3 pCi/L 20%
of the EPA limit 15 pCi/L
Highest in the city: FROST TRAILER PARK · 73 people · 2014
1/3 SYR4
Dibromochloromethane
1.08 µg/L
No EPA limit set
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2019
Highest in the city: 1.19 µg/L — GREENVILLE EST VILLAGE DIST · 472 people · 2019
2/3 SYR4
Combined Radium (-226 And -228)
0.2000 pCi/L 4%
of the EPA limit 5 pCi/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2016
1/3 SYR4
Lead
0.1100 mg/L 733%
above the EPA limit of 0.0150 mg/L
Main supplier: GREENVILLE WATER DEPT · 1,100 people · 2024
2/3 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 Greenville

SupplierPopulation served
GREENVILLE WATER DEPT 1,100
GREENVILLE EST VILLAGE DIST 472
FROST TRAILER PARK 73

Frequently asked questions about Greenville tap water

Is Greenville tap water safe to drink?

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

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

What contaminants are in Greenville's water?

The contaminants EPA monitoring detected in Greenville include Copper, Nitrate, Nitrate-Nitrite, 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.