College Hill Water Assn, MS
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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
College Hill Water Assn serves about 1,146 people through 434 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 Lafayette County, Mississippi. EPA system ID: MS0360004; phone on file: 662-832-7039. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 1.2 ppb from 0.8 ppb in the period ending 2017. The highest 90th-percentile result EPA holds for College Hill Water Assn is 2 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2 ppb |
| 2017 | 0.8 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. College Hill Water Assn's 2 ppb sits at the 78th percentile in Mississippi and the 72nd nationally (higher means more lead).
Neighbouring systems
17 other systems share Lafayette County; 3 of them have a higher latest lead result than College Hill 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 Oxford | 28,500 | 0 (not detected) |
| University Of Mississippi | 26,874 | 0 (not detected) |
| Anchor Water Association | 2,051 | 1.9 ppb |
| Taylor Water Association | 1,962 | 1 ppb |
| Westover Water Association, Inc | 1,771 | 2.2 ppb |
| Hopewell Water Association | 1,684 | 0.6 ppb |
| East Oxford Water Association | 1,544 | 1.24 ppb |
| Harmontown Water Association Inc | 1,393 | 2.4 ppb |
| Campground Water Assn | 1,175 | 0 (not detected) |
| Yocona Water Association, Inc. | 926 | 0.6 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Oxford, 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 College Hill 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.