Chamita 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.
About Chamita Mdwca
Chamita Mdwca serves about 902 people through 320 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Rio Arriba County, New Mexico. EPA system ID: NM3500121; phone on file: 505-852-9952. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Chamita Mdwca's lead record
Against the period ending 2021 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Chamita Mdwca is 0 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other New Mexico systems
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. Chamita Mdwca's reported as 0 (not detected) sits at the 19th percentile in New Mexico and the 26th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
40 other systems share Rio Arriba County; 30 of them have a higher latest lead result than Chamita Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Espanola Water System | 12,012 | 0 (not detected) |
| Chama Water System | 1,573 | 9.1 ppb |
| Agua Sana Wua | 1,514 | 0 (not detected) |
| El Rito Regional Water & Waste Water Asn | 1,200 | 4.1 ppb |
| Greater Chimayo Mdwca | 1,050 | 2.3 ppb |
| Alcalde Mdwca | 927 | 0.56 ppb |
| Truchas Mdwca | 629 | 3.1 ppb |
| Velarde Mdwca | 543 | 4.1 ppb |
| Dixon Mdwca | 500 | 1.5 ppb |
| Canjilon Water System | 469 | 11 ppb |
What to do in your house
Look up your address in Chamita 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 Chamita 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.