Country Knoll S/D, NC
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Country Knoll S/D serves about 64 people through 25 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Cabarrus County, North Carolina. EPA system ID: NC0113183; phone on file: 919-653-6999. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Country Knoll S/D is 17.3 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2022 | 17.3 ppb over 15 |
| 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. Country Knoll S/D's reported as 0 (not detected) sits at the 10th percentile in North Carolina and the 5th 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 Cabarrus County; 7 of them have a higher latest lead result than Country Knoll S/D. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Concord, City Of | 120,771 | 0 (not detected) |
| Harrisburg, Town Of | 20,549 | 0 (not detected) |
| Shiloh Church Road S/D | 3,102 | 0 (not detected) |
| Mount Pleasant, Town Of | 1,786 | 0 (not detected) |
| Whitehurst Mhp | 688 | 0 (not detected) |
| Zemosa Acres Water System | 650 | 0 (not detected) |
| Stallings Glen S/D | 544 | 0 (not detected) |
| Harbor Towne Water System | 536 | - |
| Silver Maples Estates Mhp | 463 | 0 (not detected) |
| Fieldstone/Cold Springs Dev | 424 | 0 (not detected) |
Next steps for Cary, NC
Test your own tap with a certified lab first-draw sample; Cary, NC may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Country Knoll S/D 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. More in what a past exceedance means today.