Maxwell Cooperative Water Users Assoc, NM
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.
Who runs the water here
Maxwell Cooperative Water Users Assoc serves about 261 people through 121 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Colfax County, New Mexico. EPA system ID: NM3510104; phone on file: 575-375-2381. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Maxwell Cooperative Water Users Assoc is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 0 (not detected) |
| 2020 | 2 ppb |
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. Maxwell Cooperative Water Users Assoc's 1 ppb sits at the 40th percentile in New Mexico and the 52nd nationally (higher means more lead).
Other water systems in Colfax County
12 other systems share Colfax County; 7 of them have a higher latest lead result than Maxwell Cooperative Water Users Assoc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Raton/Raton Water Works | 9,733 | 3.4 ppb |
| Village Of Angel Fire | 6,045 | 15 ppb |
| Philmont Boy Scout Ranch - Headquarters | 2,000 | 3.9 ppb |
| Cimarron Water System | 1,260 | 0 (not detected) |
| Springer Water System | 1,170 | 0 (not detected) |
| Village Of Eagle Nest | 613 | 1.7 ppb |
| Maxwell Water System | 340 | 17 ppb |
| French Mdwca/Swa | 209 | 0 (not detected) |
| Miami Water Users Association | 135 | 5 ppb |
| Vermejo Park - Headquarters | 120 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Maxwell, 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 Maxwell Cooperative Water Users Assoc 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. Systems that went over once often dip back under; here is what that means.