Is Derby, VT Tap Water Safe? Quality & Contaminants

What was found in Derby's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	3100 µg/L 238% of the EPA limit, in the worst sample — 1300 µg/L	5/5	SYR4
Nitrate	2800 µg/L 28% of the EPA limit 10000 µg/L	1/5	SYR4
Lead	530 µg/L 3533% of the EPA limit, in the worst sample — 15 µg/L	5/5	SYR4
TTHM	27.4 µg/L 34% of the EPA limit 80 µg/L	5/5	SYR4
Chloroform	20.9 µg/L No EPA limit set	5/5	SYR4
Total Haloacetic Acids (HAA5)	20.3 µg/L 34% of the EPA limit 60 µg/L	3/5	SYR4
Dichloroacetic Acid	11.5 µg/L No EPA limit set	3/5	SYR4
Trichloroacetic Acid	10.7 µg/L No EPA limit set	3/5	SYR4
Bromodichloromethane	5.4 µg/L No EPA limit set	5/5	SYR4
Dibromochloromethane	2.8 µg/L No EPA limit set	4/5	SYR4
Bromoform	0.9000 µg/L No EPA limit set	1/5	SYR4
Combined Radium (-226 And -228)	0.7380 pCi/L 15% of the EPA limit 5 pCi/L	1/5	SYR4
Benzo(A)Pyrene	0.6000 µg/L 300% of the EPA limit, in the worst sample — 0.2000 µg/L	1/5	SYR4
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L	5/5	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 single worst sample on record — 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 Derby

Supplier	Population served
DERBY CENTER WATER SYSTEM	1,400
DERBY LINE VILLAGE WATER DISTRICT	897
DERBY MHP	265
BEEBE PLAIN WATER SYSTEM	142
SHATTUCK HILL MHP	129

Frequently asked questions about Derby tap water

Is Derby tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Derby. 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 Derby?

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

What contaminants are in Derby's water?

The contaminants EPA monitoring detected in Derby include Copper, Nitrate, Lead, TTHM, Chloroform. The full list, with the highest level found 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.