Is Northwood, NH Tap Water Safe? Quality & Contaminants

What was found in Northwood'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
Fluoride	461 µg/L 12% of the EPA limit 4000 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2019 Highest in the city: 499.5 µg/L — TOWER VIEW · 55 people · 2018	4/5	SYR4
Nitrate	420 µg/L 4.2% of the EPA limit 10000 µg/L Highest in the city: THE MEADOW AT NORTHWOOD · 31 people · 2019	1/5	SYR4
Nitrate-Nitrite	407.5 µg/L 4.1% of the EPA limit 10000 µg/L Highest in the city: THE MEADOW AT NORTHWOOD · 31 people · 2019	1/5	SYR4
Copper	130 µg/L 10% of the EPA limit 1300 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2019	5/5	SYR4
Barium	23.55 µg/L 1.2% of the EPA limit 2000 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2019 Highest in the city: 42 µg/L — LOON ESTATES · 74 people · 2018	4/5	SYR4
Lead	14.47 µg/L 96% of the EPA limit 15 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2018 Highest in the city: 34 µg/L — LOON ESTATES · 74 people · 2018	3/5	SYR4
Bromodichloromethane	23 µg/L No EPA limit set Highest in the city: TOWER VIEW · 55 people · 2019	1/5	SYR4
Arsenic	2.925 µg/L 29% of the EPA limit 10 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2019 Highest in the city: 13.19 µg/L — TOWER VIEW · 55 people · 2019	4/5	SYR4
Gross Alpha, Excl. Radon And U	5.245 pCi/L 35% of the EPA limit 15 pCi/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2015	3/5	SYR4
Combined Radium (-226 And -228)	0.8850 pCi/L 18% of the EPA limit 5 pCi/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2015 Highest in the city: 2.5 pCi/L — LOON ESTATES · 74 people · 2017	5/5	SYR4
TTHM	1.9 µg/L 2.4% of the EPA limit 80 µg/L Highest in the city: THE MEADOW AT NORTHWOOD · 31 people · 2017	1/5	SYR4
Chloroform	1.845 µg/L No EPA limit set Highest in the city: THE MEADOW AT NORTHWOOD · 31 people · 2018	1/5	SYR4
Dibromochloromethane	1.6 µg/L No EPA limit set Highest in the city: TOWER VIEW · 55 people · 2019	1/5	SYR4
Dalapon	1.5 µg/L 0.8% of the EPA limit 200 µg/L Highest in the city: TOWER VIEW · 55 people · 2019	1/5	SYR4
Di(2-ethylhexyl) Phthalate	1.4 µg/L 23% of the EPA limit 6 µg/L Highest in the city: TOWER VIEW · 55 people · 2019	2/5	SYR4
Combined Uranium	0.2000 µg/L 0.7% of the EPA limit 30 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2015 Highest in the city: 0.4000 µg/L — LOON ESTATES · 74 people · 2014	3/5	SYR4
Mercury	0.1000 µg/L 5% of the EPA limit 2 µg/L Main supplier: VLG OF NORTHWOOD RDG WTR DIST · 688 people · 2019	1/5	SYR4
Lead	0.0340 mg/L 227% above the EPA limit of 0.0150 mg/L Highest in the city: LOON ESTATES · 74 people · 2017	1/5	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 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 Northwood

Supplier	Population served
VLG OF NORTHWOOD RDG WTR DIST	688
NORTHWOOD MOUNTAIN VIEW MHP	148
LOON ESTATES	74
TOWER VIEW	55
THE MEADOW AT NORTHWOOD	31

Frequently asked questions about Northwood tap water

Is Northwood tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Northwood. 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 Northwood?

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

What contaminants are in Northwood's water?

The contaminants EPA monitoring detected in Northwood include Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium. 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.