Robinsons Mhp/Upper, NH
Above the federal action level
Latest 90th-percentile lead: 16 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.
Who runs the water here
Robinsons Mhp/Upper serves about 55 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 Merrimack County, New Hampshire. EPA system ID: NH0453020. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
The highest 90th-percentile result EPA holds for Robinsons Mhp/Upper is 16 ppb across 1 monitoring period, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 16 ppb over 15 |
How Robinsons Mhp/Upper 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. Robinsons Mhp/Upper's 16 ppb sits at the 51st percentile in New Hampshire and the 99th nationally (higher means more lead).
Other water systems in Merrimack County
59 other systems share Merrimack County; 4 of them have a higher latest lead result than Robinsons Mhp/Upper. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Concord Water Dept | 44,215 | 1 ppb |
| Franklin Water Works | 7,200 | 2 ppb |
| Pembroke Water Works | 5,200 | 2 ppb |
| Central Hooksett Water Pct | 4,650 | 1 ppb |
| Penacook Boscawen Water Pct | 3,800 | 0 (not detected) |
| New London Springfield Water | 3,250 | - |
| Cogswell Springs Water Works | 3,000 | - |
| Hooksett Village Water Pct | 3,000 | - |
| Tilton Northfield Water Dist | 2,500 | - |
| Pittsfield Aqueduct | 1,625 | - |
What to do in your house
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 Robinsons Mhp/Upper 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.