Big Black Water Association, MS
Lead detected, under the action levels
Latest 90th-percentile lead: 0.74 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 Big Black Water Association
Big Black Water Association serves about 1,080 people through 409 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Madison County, Mississippi. EPA system ID: MS0450003; phone on file: 601-859-2474. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 8.46 ppb from 9.2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Big Black Water Association is 9.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.74 ppb |
| 2020 | 9.2 ppb |
| 2017 | 2.3 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. Big Black Water Association's 0.74 ppb sits at the 37th percentile in Mississippi and the 47th nationally (higher means more lead).
Nearby utilities
15 other systems share Madison County; 13 of them have a higher latest lead result than Big Black Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bear Creek W/A-West | 26,677 | 1.6 ppb |
| City Of Ridgeland | 24,340 | 1.3 ppb |
| Bear Creek W/A -East | 18,770 | 3.2 ppb |
| City Of Canton | 16,785 | 1.7 ppb |
| City Of Madison | 16,136 | 1.1 ppb |
| Cmu - Lake Caroline | 8,511 | 1.2 ppb |
| East Madison Water Assn-West | 7,339 | 1.6 ppb |
| Prvwsd-Twin Harbor | 2,973 | 0.8 ppb |
| Town Of Flora #1 | 1,653 | 0.6 ppb |
| Prvwsd-Main Harbor | 1,497 | 1.3 ppb |
Next steps for Canton, MS
Test your own tap with a certified lab first-draw sample; Canton, 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 Big Black 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. 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.