Greenfield Water System, NC
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Greenfield Water System at a glance
Greenfield Water System serves about 244 people through 96 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Surry County, North Carolina. EPA system ID: NC0286107; phone on file: 919-653-6999. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Greenfield Water System's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Greenfield Water System is 0 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2016 | 0 (not detected) |
Against other North Carolina systems
Of the 1,925 North Carolina systems with a lead result, the median latest reading is 0 ppb; 5 are over 15 ppb right now and 75 have gone over at some point. Greenfield Water System's reported as 0 (not detected) sits at the 40th percentile in North Carolina and the 17th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
34 other systems share Surry County; 11 of them have a higher latest lead result than Greenfield Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mount Airy, City Of | 10,685 | 0 (not detected) |
| Elkin, Town Of | 4,076 | 0 (not detected) |
| Dobson, Town Of | 2,615 | 0 (not detected) |
| Pilot Mountain, Town Of | 1,976 | 0 (not detected) |
| Wedgewood/Town And Country Woods | 587 | 6.1 ppb |
| Hillcrest/Mcbride Heights S/D | 491 | 7 ppb |
| Hollows Water System (The) | 378 | 0 (not detected) |
| Woodbridge S/D | 318 | 0 (not detected) |
| Colonial Woods Water System | 206 | 0 (not detected) |
| Farm Water System (The) | 160 | 0 (not detected) |
What to do in your house
Look up your address in Greenfield Water System's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Greenfield Water System 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.