What was found in Loudon'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 |
|---|---|---|---|
| Nitrate | 8685 µg/L 87% of the EPA limit 10000 µg/L Highest in the city: FLINTLOCK APTS · 30 people · 2019 | 2/7 | SYR4 |
| Nitrate-Nitrite | 4955 µg/L 50% of the EPA limit 10000 µg/L Highest in the city: FLINTLOCK APTS · 30 people · 2019 | 1/7 | SYR4 |
| Fluoride | 1190 µg/L 30% of the EPA limit 4000 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019 | 6/7 | SYR4 |
| Copper | 160.65 µg/L 12% of the EPA limit 1300 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 1147.4 µg/L — PRESIDENTIAL PINES/LOWER · 51 people · 2019 | 7/7 | SYR4 |
| Barium | 6.85 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 87.41 µg/L — FLINTLOCK APTS · 30 people · 2017 | 4/7 | SYR4 |
| TTHM | 4.7 µg/L 5.9% of the EPA limit 80 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 45.17 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 2/7 | SYR4 |
| Chloroform | 2.89 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 24.72 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 3/7 | SYR4 |
| Arsenic | 15.3 µg/L 153% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 23.4 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 6/7 | SYR4 |
| Lead | 21 µg/L 140% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019 | 6/7 | SYR4 |
| Bromodichloromethane | 1.625 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 15.66 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 2/7 | SYR4 |
| Dibromochloromethane | 1.155 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 8.56 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 2/7 | SYR4 |
| Chromium | 7.7 µg/L 7.7% of the EPA limit 100 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019 | 6/7 | SYR4 |
| Bromoform | 0.8000 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019
Highest in the city: 7.06 µg/L — VOA/NNE SENIOR HOUSING · 50 people · 2019 | 2/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.16 pCi/L 28% of the EPA limit 15 pCi/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2017 | 2/7 | SYR4 |
| Combined Uranium | 2 µg/L 6.7% of the EPA limit 30 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2017 | 1/7 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: VOA/NNE SENIOR HOUSING · 50 people · 2017 | 1/7 | SYR4 |
| Dichloroacetic Acid | 1.8 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019 | 2/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.59 µg/L 27% of the EPA limit 6 µg/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2018 | 1/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.275 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2017
Highest in the city: 1.4 pCi/L — PRESIDENTIAL PINES/LOWER · 51 people · 2016 | 3/7 | SYR4 |
| Trichloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: FREEDOM HILL/PINE RIDGE EST · 370 people · 2019 | 1/7 | SYR4 |
| Lead | 0.0310 mg/L 207% above the EPA limit of 0.0150 mg/L Highest in the city: PRESIDENTIAL PINES/LOWER · 51 people · 2009 | 1/7 | 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 Loudon
| Supplier | Population served |
|---|---|
| FREEDOM HILL/PINE RIDGE EST | 370 |
| VILLAGES AT LOUDON | 250 |
| KOS MANUFACTURED HOUSING CMNTY | 137 |
| PRESIDENTIAL PINES/UPPER | 60 |
| PRESIDENTIAL PINES/LOWER | 51 |
| VOA/NNE SENIOR HOUSING | 50 |
| FLINTLOCK APTS | 30 |
Frequently asked questions about Loudon tap water
Is Loudon tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Loudon. 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 Loudon?
7 public water suppliers report drinking-water monitoring for Loudon, New Hampshire to the EPA. Each is listed above with its population served.
What contaminants are in Loudon's water?
The contaminants EPA monitoring detected in Loudon include Nitrate, Nitrate-Nitrite, Fluoride, 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.