City Of Monroe Water System, LA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About City Of Monroe Water System
City Of Monroe Water System serves about 57,000 people through 19,000 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Ouachita Parish County, Louisiana. EPA system ID: LA1073031; phone on file: 318-329-2310. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 2 ppb from 2 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for City Of Monroe Water System is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 2 ppb |
| 2019 | 3 ppb |
| 2016 | 2 ppb |
How City Of Monroe Water System compares
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. City Of Monroe Water System's reported as 0 (not detected) sits at the 44th percentile in Louisiana and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Ouachita Parish County
22 other systems share Ouachita Parish County; 14 of them have a higher latest lead result than City Of Monroe Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of West Monroe Water System | 16,005 | 1 ppb |
| Gowc West Hwy 80 Ark Road Ws | 14,649 | 2 ppb |
| Gowc North Water System | 13,287 | 1 ppb |
| Gowc East Water System | 11,742 | 1 ppb |
| Cheniere Drew North Water System | 11,280 | 0 (not detected) |
| Southwest Ouachita Waterworks, Inc | 10,725 | 3 ppb |
| Gowc Brownville Water System | 9,696 | 3 ppb |
| Gowc Kiroli Darbonne Ws | 9,210 | 0 (not detected) |
| Gowc South Monroe Ws | 7,335 | 2 ppb |
| Cadeville Water District | 6,219 | 2 ppb |
Next steps for Monroe, LA
Look up your address in City Of Monroe Water System's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask City Of Monroe Water System 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. Small systems behave differently: why small systems go over more often.