New Mexico Water Quality Report 2026
New Mexico tap water is safe — softener may help based on our analysis of 4 water systems serving 967,725 residents. The average PurityMap score is 80.0/100 (Grade: B), which is 2.1 points above the national average.
- 3 cities (75%) have hard or very hard water (7+ GPG) which causes scale buildup and appliance damage.
- 3 cities use chloramine or have elevated chlorine residuals. Standard Brita pitchers do not remove chloramine.
A water softener is the most impactful investment for New Mexico residents in hard water areas. A basic carbon pitcher or faucet filter removes chlorine and improves taste.
Hard
New Mexico is 2.1 points above the US average of 77.9/100. Hardness is 1.0 GPG above the US average of 6.3 GPG.
Cities ranked by lowest score. Click any city for the full report and filter recommendations.
| Rank | City | Score | Hardness | Lead | Key Issues |
|---|---|---|---|---|---|
| 1 | Las Cruces | 78/100 | 9.5 GPG | 2.0 ppb | Hard (9.5 GPG) |
| 2 | Rio Rancho | 78/100 | 8.0 GPG | 1.8 ppb | Hard (8.0 GPG) |
| 3 | Albuquerque | 79/100 | 7.3 GPG | 1.8 ppb | Hard (7.3 GPG) |
| 4 | Santa Fe | 85/100 | 4.5 GPG | 1.5 ppb | Hardness 4.5 GPG |
How New Mexico's 4 cities score on the PurityMap 0–100 scale:
Water quality for the most populated cities. Click any city for details.
| City | Population | Score | Hardness | Key Issues |
|---|---|---|---|---|
| Albuquerque | 670K | 79/100 | 7.3 GPG | Hard |
| Rio Rancho | 104K | 78/100 | 8.0 GPG | Hard |
| Las Cruces | 103K | 78/100 | 9.5 GPG | Hard |
| Santa Fe | 90K | 85/100 | 4.5 GPG | — |
3 of 4 cities (75%) in New Mexico have hard or very hard water (7+ GPG). Las Cruces has the hardest at 9.5 GPG. Cities: Las Cruces, Rio Rancho, Albuquerque. A water softener is recommended.
Based on EPA UCMR5 data, PFAS have not been detected above advisory levels in any New Mexico cities in our database as of 2026.
All New Mexico cities have lead below 5 ppb. Average: 1.8 ppb. Individual homes with older plumbing may have higher levels.
Where New Mexico gets its drinking water, based on 4 water systems.
| Source Type | Cities | % of Total |
|---|---|---|
| Groundwater | 3 | 75% |
| Surface Water | 1 | 25% |
New Mexico is a hard water state (3/4 cities). A whole-house softener is the best investment.
| # | City | Pop. | Score | Hardness | Lead | PFAS | TDS |
|---|---|---|---|---|---|---|---|
| 1 | Las Cruces | 103K | 78/100 | 9.5 GPG (Hard) | 2.0 ppb | ✅ No | 380 ppm |
| 2 | Rio Rancho | 104K | 78/100 | 8.0 GPG (Hard) | 1.8 ppb | ✅ No | 320 ppm |
| 3 | Albuquerque | 670K | 79/100 | 7.3 GPG (Hard) | 1.8 ppb | ✅ No | 285 ppm |
| 4 | Santa Fe | 90K | 85/100 | 4.5 GPG (Moderate) | 1.5 ppb | ✅ No | 160 ppm |
New Mexico has 4 utilities. Major: Albuquerque Bernalillo County Water Utility, City of Las Cruces Utilities, Santa Fe Water Division, City of Rio Rancho Utilities.
Sources: Rio Grande and groundwater, Rio Grande and local reservoirs, Groundwater Santa Fe Group Aquifer.
- EPA Safe Drinking Water Information System
- EWG Tap Water Database
- State utility Consumer Confidence Reports
- USGS regional water monitoring data
PurityMap compiles publicly available data and does not perform independent testing.
4 city water quality reports available for New Mexico.
Las Cruces Water Quality Report
Rio Rancho Water Quality Report
Santa Fe Water Quality Report
Compare water quality reports across all 50 US states