- EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
- Lithium: found in 14 of 14 samples, average 236 µg/L, highest 467 µg/L (EPA UCMR 5 testing, Jan 2025–Oct 2025)
- Lead: 9 in 10 homes tested came in at or below 2 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2024–Dec 31, 2026). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
- Health-standard violation: Groundwater Rule, Groundwater Rule, from Mar 2026, with no return-to-compliance action in EPA records (EPA SDWIS)
Public EPA test results
Can you drink Rio Rancho tap water? What EPA records show
EPA system ID NM3509623 · serves Rio Rancho, NM · about 107,350 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Rio Rancho Water & WW Services (EPA NM3509623)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Rio Rancho's main utility, Rio Rancho Water & WW Services: 1 health-standard violation since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Rio Rancho Water & WW Services, as of October 14, 2026
Health-standard violation: Groundwater Rule, Groundwater Rule, from Mar 2026, with no return-to-compliance action in EPA records (EPA SDWIS).
Lead: 9 in 10 homes tested came in at or below 2 ppb, at or below EPA's 15 ppb action level (latest EPA result for a testing period that ran on or after July 1, 2021: Jan 1, 2024–Dec 31, 2026). This is one number for the whole water system, from homes the utility tested. It isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 1.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Rio Rancho Water & WW Services use chloramine?
We didn't find chloramine in Rio Rancho Water & WW Services's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)