Yardley S/D, AL
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2028). 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.
About Yardley S/D
Yardley S/D serves about 56 people through 21 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: NC4092171; 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.
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 Yardley S/D is 0 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
Where this result ranks
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. Yardley S/D's reported as 0 (not detected) sits at the 2nd percentile in Alabama and the 4th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Wake County
22 other systems share Wake County; 7 of them have a higher latest lead result than Yardley 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) |
| Olde Mill Trace S/D | 394 | 4 ppb |
| 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) |
Your move
Look up your address in Yardley S/D'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 Yardley 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. A zero today does not rule out a jump later - the rules are tightening in 2027.