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Tap water quality report

Saint Johnsbury, VT

EPA monitoring detected 15 contaminants across the 2 water suppliers serving Saint Johnsbury. 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
5,370
people served
15
contaminants found
Vermont rankings Lead in Vermont PFAS in Vermont

What was found in Saint Johnsbury'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
890 µg/L 8.9%
of the EPA limit 10000 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
1/2 SYR4
Fluoride
800 µg/L 20%
of the EPA limit 4000 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
1/2 SYR4
Copper
736 µg/L 57%
of the EPA limit 1300 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2017
2/2 SYR4
TTHM
87.38 µg/L 109%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 98.25 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Chloroform
75.44 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 85.45 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
56.92 µg/L 95%
of the EPA limit 60 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 57.475 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Trichloroacetic Acid
31.8 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
2/2 SYR4
Dichloroacetic Acid
27.85 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 31.045 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Monochloroacetic Acid
21.04 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
2/2 SYR4
Barium
15.95 µg/L 0.8%
of the EPA limit 2000 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
1/2 SYR4
Bromodichloromethane
10.56 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 11.485 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Lead
5.83 µg/L 39%
of the EPA limit 15 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2017
2/2 SYR4
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
1/2 SYR4
Dibromochloromethane
1.435 µg/L
No EPA limit set
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2019
Highest in the city: 1.44 µg/L — ST JOHNSBURY CENTER F D 1 · 370 people · 2019
2/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: ST JOHNSBURY WATER SYSTEM · 5,000 people · 2023
Highest in the city: 0.0067 mg/L — ST JOHNSBURY CENTER F D 1 · 370 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 Saint Johnsbury

SupplierPopulation served
ST JOHNSBURY WATER SYSTEM 5,000
ST JOHNSBURY CENTER F D 1 370

Frequently asked questions about Saint Johnsbury tap water

Is Saint Johnsbury tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Saint Johnsbury. 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 Saint Johnsbury?

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

What contaminants are in Saint Johnsbury's water?

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