Stoneridge Master, NC
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
Stoneridge Master at a glance
Stoneridge Master serves about 681 people through 268 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Orange County, North Carolina. EPA system ID: NC0368185; phone on file: 919-653-6999. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stoneridge Master is 6.36 ppb across 12 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 3.4 ppb |
| 2020 | 6.36 ppb |
| 2019 | 5.51 ppb |
| 2016 | 0 (not detected) |
How Stoneridge Master compares
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. Stoneridge Master's reported as 0 (not detected) sits at the 55th percentile in North Carolina and the 24th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Orange County
26 other systems share Orange County; 2 of them have a higher latest lead result than Stoneridge Master. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Orange Water & Sewer Authority | 86,500 | 0 (not detected) |
| Hillsborough, Town Of | 14,006 | 0 (not detected) |
| Orange-Alamance Water System | 9,223 | 0 (not detected) |
| Birchwood Mhp | 312 | 3 ppb |
| Robin`S Wood | 246 | 0 (not detected) |
| Maple Ridge Mhp | 216 | 0 (not detected) |
| Northwood S/D | 208 | 0 (not detected) |
| The Trails S/D | 200 | 4.6 ppb |
| Whispering Pines | 183 | 0 (not detected) |
| Orange Mhp | 144 | 0 (not detected) |
What to do in your house
Look up your address in Stoneridge Master'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 Stoneridge Master whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1595 ppb (copper action level 1,300 ppb).
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.