What was found in Goffstown'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 | 1610 µg/L 124% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019
Highest in the city: 5078.4 µg/L — BRIAR COURT ESTATES · 113 people · 2019 | 6/6 | SYR4 |
| Nitrate | 1600 µg/L 16% of the EPA limit 10000 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 2/6 | SYR4 |
| Lead | 19.6 µg/L 131% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019
Highest in the city: 1114.42 µg/L — GRASMERE WATER PCT/MAIN · 1,125 people · 2018 | 6/6 | SYR4 |
| Fluoride | 616.3 µg/L 15% of the EPA limit 4000 µg/L Highest in the city: BRIAR COURT ESTATES · 113 people · 2019 | 3/6 | SYR4 |
| Barium | 14.2 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019
Highest in the city: 66.7 µg/L — MT LAUREL ESTATES · 115 people · 2017 | 3/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 66 µg/L 110% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 4/6 | SYR4 |
| TTHM | 59.7 µg/L 75% of the EPA limit 80 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 4/6 | SYR4 |
| Chloroform | 55 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 4/6 | SYR4 |
| Trichloroacetic Acid | 41.6 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 2/6 | SYR4 |
| Dichloroacetic Acid | 25.1 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 3/6 | SYR4 |
| Arsenic | 2.505 µg/L 25% of the EPA limit 10 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019
Highest in the city: 18.7101 µg/L — ORCHARD HIGHLANDS · 105 people · 2019 | 4/6 | SYR4 |
| Combined Uranium | 15.793 µg/L 53% of the EPA limit 30 µg/L Highest in the city: BRIAR COURT ESTATES · 113 people · 2017 | 2/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.74 pCi/L 12% of the EPA limit 15 pCi/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2015
Highest in the city: 5.4 pCi/L — BRIAR COURT ESTATES · 113 people · 2014 | 3/6 | SYR4 |
| Bromodichloromethane | 5.4 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 4/6 | SYR4 |
| Monochloroacetic Acid | 4.38 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 1/6 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.9 µg/L 32% of the EPA limit 6 µg/L Highest in the city: ORCHARD HIGHLANDS · 105 people · 2018 | 1/6 | SYR4 |
| Chromium | 1.81 µg/L 1.8% of the EPA limit 100 µg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 1/6 | SYR4 |
| Dibromochloromethane | 1.42 µg/L No EPA limit set Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2019 | 4/6 | SYR4 |
| Combined Radium (-226 And -228) | 0.3000 pCi/L 6% of the EPA limit 5 pCi/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2015
Highest in the city: 1.4 pCi/L — BRIAR COURT ESTATES · 113 people · 2017 | 3/6 | SYR4 |
| Monobromoacetic Acid | 1.4 µg/L No EPA limit set Highest in the city: BRIAR COURT ESTATES · 113 people · 2019 | 1/6 | SYR4 |
| Lead | 0.0860 mg/L 573% above the EPA limit of 0.0150 mg/L Main supplier: GOFFSTOWN VILLAGE PCT · 3,250 people · 2010 | 2/6 | 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 Goffstown
| Supplier | Population served |
|---|---|
| GOFFSTOWN VILLAGE PCT | 3,250 |
| GRASMERE WATER PCT/MAIN | 1,125 |
| MT LAUREL ESTATES | 115 |
| BRIAR COURT ESTATES | 113 |
| ORCHARD HIGHLANDS | 105 |
| GRASMERE WP/LANDMARK | 90 |
Frequently asked questions about Goffstown tap water
Is Goffstown tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Goffstown. 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 Goffstown?
6 public water suppliers report drinking-water monitoring for Goffstown, New Hampshire to the EPA. Each is listed above with its population served.
What contaminants are in Goffstown's water?
The contaminants EPA monitoring detected in Goffstown include Copper, Nitrate, Lead, Fluoride, 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.