Chapman Apartments, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 ppb (monitoring period 2025-2025). 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.
Chapman Apartments at a glance
Chapman Apartments serves about 80 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in St. Tammany Parish County, Louisiana. EPA system ID: LA1103150; phone on file: 225-923-3898. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Chapman Apartments's lead record
That is up 1.4 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Chapman Apartments is 1.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.4 ppb |
| 2021 | 0 (not detected) |
| 2018 | 0 (not detected) |
Against other Louisiana systems
Of the 802 Louisiana systems with a lead result, the median latest reading is 0.72 ppb; 4 are over 15 ppb right now and 30 have gone over at some point. Chapman Apartments's 1.4 ppb sits at the 69th percentile in Louisiana and the 61st nationally (higher means more lead).
Nearby utilities
65 other systems share St. Tammany Parish County; 12 of them have a higher latest lead result than Chapman Apartments. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Slidell Water Supply | 35,547 | 0 (not detected) |
| St Tam Parish- Bedico -Faubourg-Coquille | 18,372 | 0 (not detected) |
| St Tam Parish - Briarwood Terrace | 17,536 | 2 ppb |
| City Of Covington Water Supply | 16,185 | 0 (not detected) |
| City Of Mandeville Water Supply | 13,000 | 1 ppb |
| Utilities Inc - North Park Water Supply | 11,298 | 0 (not detected) |
| Bayou Liberty Water Association | 10,791 | 0 (not detected) |
| St Tam Parish - Cross Gates Sd | 8,037 | 0 (not detected) |
| Lee Road Water Corporation | 7,665 | 2 ppb |
| Utilities Inc - Kingspoint Subdivision | 6,351 | 0 (not detected) |
Next steps for Baton Rouge, LA
Test your own tap with a certified lab first-draw sample; Baton Rouge, LA 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 Chapman Apartments 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.