Monument Mdwca, NM
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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.
Who runs the water here
Monument Mdwca serves about 279 people through 90 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Lea County, New Mexico. EPA system ID: NM3537113; phone on file: 575-441-9706. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Monument Mdwca's lead record
Against the period ending 2021 (0.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monument Mdwca is 0.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 0.6 ppb |
| 2018 | 0.6 ppb |
Where this result ranks
Of the 504 New Mexico systems with a lead result, the median latest reading is 1.4 ppb; 14 are over 15 ppb right now and 46 have gone over at some point. Monument Mdwca's reported as 0 (not detected) sits at the 15th percentile in New Mexico and the 18th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
9 other systems share Lea County; 6 of them have a higher latest lead result than Monument Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Hobbs Municipal Water Supply | 40,418 | 0.6 ppb |
| Lovington Municipal Water Supply | 13,539 | 0 (not detected) |
| Jal Water Supply System | 5,500 | 0.6 ppb |
| Eunice Water Supply System | 4,487 | 0.99 ppb |
| Tatum Municipal Water System | 948 | 1.1 ppb |
| Adobe Village | 83 | 0 (not detected) |
| Mescalero Ridge Water Co-Op | 76 | 0.5 ppb |
| Monarchy Country Estates | 52 | 3.5 ppb |
| Morwest Corporation | - | - |
Next steps for Monument, NM
Look up your address in Monument Mdwca'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 Monument Mdwca 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. Small systems behave differently: why small systems go over more often.