Is Hooksett, NH Tap Water Safe? Quality & Contaminants

What was found in Hooksett'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	110.179 µg/L 8.5% of the EPA limit 1300 µg/L Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2017 Highest in the city: 274.5 µg/L — HOOKSETT VILLAGE WATER PCT · 3,000 people · 2018	4/4	SYR4
Fluoride	187.5 µg/L 4.7% of the EPA limit 4000 µg/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2018	1/4	SYR4
Lead	53.89 µg/L 359% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2017	3/4	SYR4
TTHM	23.9 µg/L 30% of the EPA limit 80 µg/L Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	4/4	SYR4
Chloroform	19.14 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	4/4	SYR4
Total Haloacetic Acids (HAA5)	16 µg/L 27% of the EPA limit 60 µg/L Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	4/4	SYR4
Barium	11.3 µg/L 0.6% of the EPA limit 2000 µg/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2018	1/4	SYR4
Dichloroacetic Acid	8.4 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	4/4	SYR4
Trichloroacetic Acid	7.65 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	1/4	SYR4
Bromodichloromethane	4.3 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	4/4	SYR4
Monochloroacetic Acid	2.4 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019	1/4	SYR4
Dibromochloromethane	0.9000 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2019 Highest in the city: 2.065 µg/L — WESCO UTILITIES · 210 people · 2019	4/4	SYR4
Arsenic	1.99 µg/L 20% of the EPA limit 10 µg/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2018	1/4	SYR4
Bromoform	0.6900 µg/L No EPA limit set Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2019	1/4	SYR4
Gross Alpha, Excl. Radon And U	0.6000 pCi/L 4% of the EPA limit 15 pCi/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2014	1/4	SYR4
Combined Radium (-226 And -228)	0.3900 pCi/L 7.8% of the EPA limit 5 pCi/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2014	1/4	SYR4
Combined Uranium	0.2000 µg/L 0.7% of the EPA limit 30 µg/L Highest in the city: HOOKSETT VILLAGE WATER PCT · 3,000 people · 2014	1/4	SYR4
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2023 Highest in the city: 0.1220 mg/L — SMYTHE WOODS · 168 people · 2006	2/4	LCR
Pfba	0.0280 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2023	1/4	UCMR-5
PFOA	0.0049 µg/L No EPA limit set Main supplier: CENTRAL HOOKSETT WATER PCT · 4,650 people · 2023	1/4	UCMR-5

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 Hooksett

Supplier	Population served
CENTRAL HOOKSETT WATER PCT	4,650
HOOKSETT VILLAGE WATER PCT	3,000
WESCO UTILITIES	210
SMYTHE WOODS	168

Frequently asked questions about Hooksett tap water

Is Hooksett tap water safe to drink?

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

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

What contaminants are in Hooksett's water?

The contaminants EPA monitoring detected in Hooksett include Copper, Fluoride, Lead, 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.