Olde Mill Trace S/D, AL
Lead detected, under the action levels
Latest 90th-percentile lead: 4 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Olde Mill Trace S/D
Olde Mill Trace S/D serves about 394 people through 155 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Wake County, Alabama. EPA system ID: NC4092168; phone on file: 877-511-2911. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Olde Mill Trace S/D's lead record
That is up 4 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Olde Mill Trace S/D is 4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 3 ppb |
How Olde Mill Trace S/D compares
Of the 542 Alabama systems with a lead result, the median latest reading is 0 ppb; 1 are over 15 ppb right now and 11 have gone over at some point. Olde Mill Trace S/D's 4 ppb sits at the 95th percentile in Alabama and the 87th nationally (higher means more lead).
Other water systems in Wake County
22 other systems share Wake County; 1 of them has a higher latest lead result than Olde Mill Trace S/D. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Blaney Farms S/D | 395 | 0 (not detected) |
| Kanata Mills S/D | 341 | 1.5 ppb |
| Mornington S/D | 218 | 2.8 ppb |
| Twin Lake Farm S/D | 208 | 0 (not detected) |
| Camberly S/D | 203 | 0 (not detected) |
| Bella Vista S/D | 186 | 0 (not detected) |
| Jackson Manor S/D | 175 | 3.6 ppb |
| Fish Hawk Ranch S/D | 171 | 3 ppb |
| Yates Mill Estates | 145 | 0 (not detected) |
| Stonewood Manor S/D | 127 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Birmingham, AL 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 Olde Mill Trace 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.