Monadnock Tenants, NH
Above the federal action level
Latest 90th-percentile lead: 126 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 Monadnock Tenants
Monadnock Tenants serves about 200 people through 80 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Cheshire County, New Hampshire. EPA system ID: NH1993010. 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 Monadnock Tenants is 126 ppb across 1 monitoring period, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 126 ppb over 15 |
Against other New Hampshire systems
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. Monadnock Tenants's 126 ppb sits at the 97th percentile in New Hampshire and the 100th nationally (higher means more lead).
Other water systems in Cheshire County
30 other systems share Cheshire County; 0 of them have a higher latest lead result than Monadnock Tenants. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Keene Water Dept | 30,000 | 0 (not detected) |
| Jaffrey Water Works | 3,800 | 0 (not detected) |
| Winchester Water Dept | 2,800 | - |
| North Hinsdale Water Dept | 1,800 | - |
| N Swanzey Water And Fire Prct | 1,700 | - |
| Hinsdale Water Dept/Downtown | 1,600 | - |
| Troy Water Works | 1,200 | - |
| Walpole Water Dept | 1,057 | - |
| Marlborough Water Works | 750 | - |
| West Swanzey Water | 430 | - |
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 Monadnock Tenants 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. Systems that went over once often dip back under; here is what that means.