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Tap water quality report

Greenwich, NY

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Greenwich. 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
1,737
people served
20
contaminants found
New York rankings Lead in New York PFAS in New York

What was found in Greenwich'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
Nitrate
1360 µg/L 14%
of the EPA limit 10000 µg/L
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
2/2 SYR4
Barium
99.6 µg/L 5%
of the EPA limit 2000 µg/L
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 330.4 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
Nitrate-Nitrite
268 µg/L 2.7%
of the EPA limit 10000 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Fluoride
146.8 µg/L 3.7%
of the EPA limit 4000 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
6.6105 µg/L 11%
of the EPA limit 60 µg/L
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 46.4 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
TTHM
11.1395 µg/L 14%
of the EPA limit 80 µg/L
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 44.6 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
Chloroform
6.248 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 41 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
Trichloroacetic Acid
2.14 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 29.4 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
Copper
20.9 µg/L 1.6%
of the EPA limit 1300 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Dichloroacetic Acid
3.324 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
Highest in the city: 17.8 µg/L — PLEASANT VILLA M.H.P. · 72 people · 2019
2/2 SYR4
Chromium
9.2 µg/L 9.2%
of the EPA limit 100 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Bromodichloromethane
3.63 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
2/2 SYR4
Lead
3.4 µg/L 23%
of the EPA limit 15 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Dibromochloromethane
2.565 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
1/2 SYR4
P-Dichlorobenzene
2.04 µg/L 2.7%
of the EPA limit 75 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Monochloroacetic Acid
1.523 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.3355 µg/L
No EPA limit set
Main supplier: GREENWICH VILLAGE · 1,665 people · 2019
1/2 SYR4
Arsenic
0.6000 µg/L 6%
of the EPA limit 10 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Selenium
0.5000 µg/L 1%
of the EPA limit 50 µg/L
Highest in the city: PLEASANT VILLA M.H.P. · 72 people · 2019
1/2 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: GREENWICH VILLAGE · 1,665 people · 2023
Highest in the city: 0.0080 mg/L — PLEASANT VILLA M.H.P. · 72 people · 2025
2/2 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 Greenwich

SupplierPopulation served
GREENWICH VILLAGE 1,665
PLEASANT VILLA M.H.P. 72

Frequently asked questions about Greenwich tap water

Is Greenwich tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Greenwich. 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 Greenwich?

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

What contaminants are in Greenwich's water?

The contaminants EPA monitoring detected in Greenwich include Nitrate, Barium, Nitrate-Nitrite, Fluoride, Total Haloacetic Acids (HAA5). 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.