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Tap water quality report

Grand Isle, VT

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Grand Isle. 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
2,678
people served
13
contaminants found
Vermont rankings Lead in Vermont PFAS in Vermont

What was found in Grand Isle'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
383.5 µg/L 30%
of the EPA limit 1300 µg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2017
2/2 SYR4
Nitrate
290 µg/L 2.9%
of the EPA limit 10000 µg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
2/2 SYR4
TTHM
67.985 µg/L 85%
of the EPA limit 80 µg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 68.41 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Chloroform
60.34 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 62.675 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
59.315 µg/L 99%
of the EPA limit 60 µg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 62.27 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Trichloroacetic Acid
39.55 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
2/2 SYR4
Dichloroacetic Acid
19.12 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 27.09 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Monochloroacetic Acid
6.9 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 8.055 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Bromodichloromethane
6.81 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
2/2 SYR4
Lead
1.475 µg/L 9.8%
of the EPA limit 15 µg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2017
Highest in the city: 1.825 µg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2019
2/2 SYR4
Dibromochloromethane
1.13 µg/L
No EPA limit set
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
0.6130 pCi/L 12%
of the EPA limit 5 pCi/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2019
Highest in the city: 0.7190 pCi/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 people · 2014
2/2 SYR4
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
Main supplier: GRAND ISLE CONSOLIDATED WATER DISTRICT · 1,600 people · 2023
Highest in the city: 0.0063 mg/L — GRAND ISLE FIRE DISTRICT 4 · 1,078 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 Grand Isle

SupplierPopulation served
GRAND ISLE CONSOLIDATED WATER DISTRICT 1,600
GRAND ISLE FIRE DISTRICT 4 1,078

Frequently asked questions about Grand Isle tap water

Is Grand Isle tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Grand Isle. 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 Grand Isle?

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

What contaminants are in Grand Isle's water?

The contaminants EPA monitoring detected in Grand Isle include Copper, Nitrate, TTHM, Chloroform, 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.