Crotched Mountain School, NH
Above the federal action level
Latest 90th-percentile lead: 66 ppb (monitoring period 2019-2021). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
About Crotched Mountain School
Crotched Mountain School serves about 300 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Hillsborough County, New Hampshire. EPA system ID: NH0972010. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
The highest 90th-percentile result EPA holds for Crotched Mountain School is 66 ppb across 1 monitoring period, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 66 ppb over 15 |
How Crotched Mountain School compares
Of the 124 New Hampshire systems with a lead result, the median latest reading is 16 ppb; 62 are over 15 ppb right now and 64 have gone over at some point. Crotched Mountain School's 66 ppb sits at the 90th percentile in New Hampshire and the 100th nationally (higher means more lead).
Nearby utilities
67 other systems share Hillsborough County; 2 of them have a higher latest lead result than Crotched Mountain School. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Manchester Water Works | 123,500 | 0 (not detected) |
| Pennichuck Water Works | 88,853 | 2 ppb |
| Merrimack Village Dist | 25,500 | 0 (not detected) |
| Hudson Water Dept | 16,700 | 0 (not detected) |
| Milford Water Utilities Dept | 9,500 | 2 ppb |
| Litchfield | 6,920 | 0 (not detected) |
| Peterborough Water Works | 4,500 | 9 ppb |
| Goffstown Village Pct | 3,250 | - |
| Little Pond Estates | 3,000 | - |
| Hillsborough Water Works | 2,000 | - |
Your move
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Crotched Mountain School whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.