Marine Corps Base Hawaii, HI
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2019-2021). 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.
Who runs the water here
Marine Corps Base Hawaii serves about 16,300 people through 2,555 service connections, which makes it a large system under EPA's size classes. It is federally owned and draws groundwater, in Honolulu County, Hawaii. EPA system ID: HI0000356; phone on file: 808-257-0800. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 5.09 ppb from 5.09 ppb in the period ending 2018. The highest 90th-percentile result EPA holds for Marine Corps Base Hawaii is 5.09 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2021 | 0 (not detected) |
| 2018 | 5.09 ppb |
Against other Hawaii systems
Of the 112 Hawaii systems with a lead result, the median latest reading is 0 ppb; 0 are over 15 ppb right now and 1 have gone over at some point. Marine Corps Base Hawaii's reported as 0 (not detected) sits at the 82nd percentile in Hawaii and the 38th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
28 other systems share Honolulu County; 0 of them have a higher latest lead result than Marine Corps Base Hawaii. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hnl-Windward-Pearl Harbor | 631,389 | 0 (not detected) |
| Waipahu-Ewa-Waianae | 217,479 | 0 (not detected) |
| Joint Base Pearl Harbor-Hickam | 65,230 | 0 (not detected) |
| Mililani | 50,573 | 0 (not detected) |
| Schofield Barracks | 37,920 | 0 (not detected) |
| Wahiawa | 23,348 | 0 (not detected) |
| Waipio Heights | 11,516 | 0 (not detected) |
| Waialua-Haleiwa | 9,996 | 0 (not detected) |
| Fort Shafter | 7,067 | 0 (not detected) |
| Nctams Eastpac | 6,470 | 0 (not detected) |
Your move
Look up your address in Marine Corps Base Hawaii'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 Marine Corps Base Hawaii 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. Small systems behave differently: why small systems go over more often.