Hopson Downs S/D, NC
Lead detected, under the action levels
Latest 90th-percentile lead: 4.9 ppb (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. 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.
Hopson Downs S/D at a glance
Hopson Downs S/D serves about 282 people through 111 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Wake County, North Carolina. EPA system ID: NC4092040; phone on file: 919-653-6999. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hopson Downs S/D is 5 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 4.9 ppb |
| 2025 | 5 ppb |
How Hopson Downs S/D 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. Hopson Downs S/D's 4.9 ppb sits at the 93rd percentile in North Carolina and the 90th nationally (higher means more lead).
Other water systems in Wake County
298 other systems share Wake County; 26 of them have a higher latest lead result than Hopson Downs S/D. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Raleigh, City Of | 650,000 | 0 (not detected) |
| Cary, Town Of | 227,300 | 0 (not detected) |
| Apex, Town Of | 83,001 | 0 (not detected) |
| Holly Springs, Town Of | 51,947 | 0 (not detected) |
| Fuquay-Varina, Town Of | 42,954 | 0 (not detected) |
| Bayleaf Master | 16,715 | 0 (not detected) |
| New Light Master | 2,619 | 0 (not detected) |
| Stonehenge S/D | 1,840 | 0 (not detected) |
| Rockbridge S/D | 1,042 | 7.8 ppb |
| Medfield Estates S/D | 772 | 4 ppb |
Your move
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 Hopson Downs 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.