Los Lunas Water System, NM
Lead detected, under the action levels
Latest 90th-percentile lead: 5 ppb (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. 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.
Who runs the water here
Los Lunas Water System serves about 19,400 people through 7,830 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 Valencia County, New Mexico. EPA system ID: NM3525332; phone on file: 505-352-7629. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 2 ppb from 3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Los Lunas Water System is 5 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 5 ppb |
| 2022 | 3 ppb |
| 2020 | 3 ppb |
| 2019 | 3 ppb |
| 2018 | 3 ppb |
| 2017 | 5 ppb |
| 2016 | 5 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. Los Lunas Water System's 5 ppb sits at the 87th percentile in New Mexico and the 91st nationally (higher means more lead).
Neighbouring systems
16 other systems share Valencia County; 0 of them have a higher latest lead result than Los Lunas Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Belen Water System | 10,830 | 0 (not detected) |
| Rio Communities Water System | 5,513 | 1.3 ppb |
| Rio Del Oro Water System | 4,387 | 0 (not detected) |
| Bosque Farms Water Supply System | 4,367 | 1 ppb |
| Meadow Lake Water System | 2,760 | 0 (not detected) |
| Monterey Water Company Inc. | 1,472 | 1.4 ppb |
| Hi Mesa Water System | 259 | 0 (not detected) |
| Correo Water Association | 201 | 1.3 ppb |
| Bosque Gardens Mdwca | 141 | 2.2 ppb |
| Trails End Mhp | 112 | 3.4 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Los Lunas, NM 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 Los Lunas 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.