Sandoval County Water Quality: 3 Cities Ranked by the Records
Sandoval County, New Mexico: 3 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
LithiumDetected in 3 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest537 µg/L
- BERNALILLO WATER SYSTEM537 µg/LSample date: 2025-01-28 to 2025-07-09
- RIO RANCHO WATER & WW SERVICES467 µg/LSample date: 2025-01-14 to 2025-10-07
- LOS ALAMOS MUNICIPAL WATER SYSTEM33.8 µg/LSample date: 2023-01-19 to 2023-07-28
Lead (90th percentile)Detected in 3 systems15 µg/L federal action level · US EPAHighest2 µg/L
- RIO RANCHO WATER & WW SERVICES2 µg/LMonitoring period: 2024–2026 (still open)
- BERNALILLO WATER SYSTEM1.4 µg/LMonitoring period: 2026–2026 (still open)
- LOS ALAMOS MUNICIPAL WATER SYSTEM1.3 µg/LMonitoring period: 2024–2026 (still open)
29 PFAS tested, none detected in any systemShow
Tested in these 3 systems: BERNALILLO WATER SYSTEM, LOS ALAMOS MUNICIPAL WATER SYSTEM, RIO RANCHO WATER & WW SERVICES
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorobutanesulfonic acid (PFBS)
- Perfluorobutanoic acid (PFBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorohexanesulfonic acid (PFHxS)
- Perfluorohexanoic acid (PFHxA)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanesulfonic acid (PFOS)
- Perfluorooctanoic acid (PFOA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluoropentanoic acid (PFPeA)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
0of 3 cities above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in New MexicoLargest water systems
- Rio RanchoRIO RANCHO WATER & WW SERVICES · NM3509623107,350 served
- Los AlamosLOS ALAMOS MUNICIPAL WATER SYSTEM · NM350011525,000 served
- BernalilloBERNALILLO WATER SYSTEM · NM350892311,810 served
Frequently asked
How does Sandoval County tap water compare across cities?
PurityMap ranks 3 cities in Sandoval County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Los Alamos's main water system: LOS ALAMOS MUNICIPAL WATER SYSTEM · PWSID NM3500115 · Purity Score 99 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Sandoval County cities had a PFAS sample above a 2024 EPA limit?
None of the 3 Sandoval County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 0.
Is there lead in Sandoval County tap water?
Utilities report lead as a 90th-percentile result from home taps. 3 of 3 Sandoval County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
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