Black Bayou Water Assn., MS
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 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.
Who runs the water here
Black Bayou Water Assn. serves about 6,917 people through 2,620 service connections, which makes it a medium-sized system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Washington County, Mississippi. EPA system ID: MS0760076; phone on file: 662-317-9023. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2020 (0.8 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Black Bayou Water Assn. is 2.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.5 ppb |
| 2020 | 0.8 ppb |
| 2017 | 2.4 ppb |
How Black Bayou Water Assn. 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. Black Bayou Water Assn.'s 1.5 ppb sits at the 69th percentile in Mississippi and the 64th nationally (higher means more lead).
Other water systems in Washington County
10 other systems share Washington County; 3 of them have a higher latest lead result than Black Bayou Water Assn.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Greenville | 29,602 | 1.1 ppb |
| City Of Leland | 4,591 | 0.7 ppb |
| City Of Hollandale | 2,323 | 1.03 ppb |
| Town Of Metcalfe | 1,125 | 0.6 ppb |
| Glen Allan Utility District | 649 | 0.79 ppb |
| Town Of Arcola | 546 | 1 ppb |
| Raskin Enterprises Llc-Delta Village Mhp | 491 | 0 (not detected) |
| Golding Acres Water Assn | 99 | 18.2 ppb |
| Winterville Water Association | 92 | 2 ppb |
| City Of Greenville (Airbase) | 30 | 4.3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Greenville, 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 Black Bayou Water Assn. 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. The action level is dropping - the 10 ppb rule from 2027.