Johnston Co-West, NC
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). 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 Johnston Co-West
Johnston Co-West serves about 99,027 people through 38,987 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Johnston County, North Carolina. EPA system ID: NC0351070; phone on file: 919-938-5826. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Johnston Co-West's lead record
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Johnston Co-West is 0 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 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. Johnston Co-West's reported as 0 (not detected) sits at the 79th percentile in North Carolina and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Johnston County
46 other systems share Johnston County; 7 of them have a higher latest lead result than Johnston Co-West. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Clayton, Town Of | 30,876 | 0 (not detected) |
| Johnston Co-East | 25,212 | 0 (not detected) |
| Smithfield, Town Of | 12,900 | 0 (not detected) |
| Flowers Plantation | 12,809 | 0 (not detected) |
| Selma, Town Of | 6,190 | 0 (not detected) |
| Benson, Town Of | 4,802 | 0 (not detected) |
| Town Of Clayton - North | 4,703 | 0 (not detected) |
| Pine Level, Town Of | 2,413 | 1.4 ppb |
| Four Oaks, Town Of | 2,302 | 3 ppb |
| Kenly, Town Of | 2,301 | 0 (not detected) |
Your move
Look up your address in Johnston Co-West'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 Johnston Co-West 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. Small systems behave differently: why small systems go over more often.