City Of West Monroe Water System, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2024-2026). 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.
City Of West Monroe Water System at a glance
City Of West Monroe Water System serves about 16,005 people through 5,335 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 groundwater, in Ouachita Parish County, Louisiana. EPA system ID: LA1073056; phone on file: 318-396-2600. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of West Monroe Water System is 9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 1 ppb |
| 2020 | 9 ppb |
| 2017 | 2 ppb |
How City Of West 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 West Monroe Water System's 1 ppb sits at the 66th percentile in Louisiana and the 55th nationally (higher means more lead).
Other water systems in Ouachita Parish County
22 other systems share Ouachita Parish County; 8 of them have a higher latest lead result than City Of West 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 Monroe Water System | 57,000 | 0 (not detected) |
| 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 West Monroe, LA
Test your own tap with a certified lab first-draw sample; West Monroe, 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 City Of West 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. The action level is dropping - the 10 ppb rule from 2027.