Hcua-East, MS
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
Hcua-East at a glance
Hcua-East serves about 404 people through 153 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Harrison County, Mississippi. EPA system ID: MS0240272; phone on file: 228-868-8752. 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 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Hcua-East is 0 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
Against other Mississippi systems
Of the 973 Mississippi systems with a lead result, the median latest reading is 1 ppb; 9 are over 15 ppb right now and 44 have gone over at some point. Hcua-East's reported as 0 (not detected) sits at the 2nd percentile in Mississippi and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Harrison County
24 other systems share Harrison County; 18 of them have a higher latest lead result than Hcua-East. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Gulfport | 75,056 | 1.5 ppb |
| City Of Biloxi | 23,310 | 1 ppb |
| City Of Long Beach | 18,514 | 2.9 ppb |
| Diberville W/S | 12,721 | 1.6 ppb |
| City Of Pass Christian | 10,436 | 1 ppb |
| City Of Biloxi-North | 9,858 | 1.1 ppb |
| Keesler Air Force Base | 8,006 | 1.1 ppb |
| City Of Biloxi-French | 4,968 | 0.7 ppb |
| Riverbend Utilities Inc | 4,834 | 5.1 ppb |
| Naval Construction Battal Ctr | 3,347 | 2 ppb |
Your move
Look up your address in Hcua-East'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 Hcua-East 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. Small systems behave differently: why small systems go over more often.