Walls Water Association, MS
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 ppb (monitoring period 2023-2025). 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 Walls Water Association
Walls Water Association serves about 2,999 people through 1,136 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 Desoto County, Mississippi. EPA system ID: MS0170019; phone on file: 662-781-3722. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Walls Water Association's lead record
Against the period ending 2022 (0.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Walls Water Association is 0.7 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.6 ppb |
| 2022 | 0.5 ppb |
| 2019 | 0.7 ppb |
| 2017 | 0.7 ppb |
How Walls Water Association compares
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. Walls Water Association's 0.6 ppb sits at the 30th percentile in Mississippi and the 45th nationally (higher means more lead).
Neighbouring systems
17 other systems share Desoto County; 12 of them have a higher latest lead result than Walls Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Southaven | 56,000 | 0 (not detected) |
| City Of Olive Branch | 54,025 | 0.9 ppb |
| City Of Hernando | 14,457 | 1.2 ppb |
| City Of Horn Lake | 13,649 | 1.2 ppb |
| Horn Lake Water Association | 12,735 | 0 (not detected) |
| Lewisburg Water Association | 9,390 | 1.8 ppb |
| Walls Water Assn- Lake Forest | 9,298 | 0.7 ppb |
| City Of Hernando-Jaybird | 6,750 | 1.9 ppb |
| Nesbit Water Association | 5,988 | 1.1 ppb |
| Eudora Utilities Association | 3,749 | 0.8 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Walls, 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 Walls Water Association 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. Systems that went over once often dip back under; here is what that means.