Hilton Heights Water Assn #1, MS
Lead detected, under the action levels
Latest 90th-percentile lead: 4 ppb (monitoring period 2021-2023). 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.
About Hilton Heights Water Assn #1
Hilton Heights Water Assn #1 serves about 1,336 people through 506 service connections, which makes it a small system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Yazoo County, Mississippi. EPA system ID: MS0820008; phone on file: 662-746-1574. 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 up 2.1 ppb from 1.9 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Hilton Heights Water Assn #1 is 4 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4 ppb |
| 2020 | 1.9 ppb |
Where this result ranks
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. Hilton Heights Water Assn #1's 4 ppb sits at the 94th percentile in Mississippi and the 88th nationally (higher means more lead).
Other water systems in Yazoo County
16 other systems share Yazoo County; 3 of them have a higher latest lead result than Hilton Heights Water Assn #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Yazoo City | 9,913 | 0.6 ppb |
| Central Yazoo #1 Fletchers Ch. | 2,482 | 0.7 ppb |
| Central Yazoo #3 Mechanicsbrg | 1,927 | 0.8 ppb |
| Central Yazoo W/A #5 | 1,618 | 0.94 ppb |
| Central Yazoo #4-Benton | 1,225 | 0.7 ppb |
| Casey Jones Water Assn. | 1,146 | 1.9 ppb |
| Lake City Water Assn-East | 956 | 0 (not detected) |
| Lake City Water Assn-West | 929 | 0 (not detected) |
| Midway W/A #3 | 739 | 1.8 ppb |
| Midway W/A #1 | 552 | 1.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Yazoo City, MS 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 Hilton Heights Water Assn #1 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. The action level is dropping - the 10 ppb rule from 2027.