Elko County Water Quality: 2 Cities Ranked by the Records
Elko County, Nevada: 2 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.
Perfluorooctanesulfonic acid (PFOS)Detected in 1 system of 2 tested4.0 ng/L federal MCL (2024) · US EPAHighest46 ng/L
- ELKO CITY OF46 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
LithiumDetected in 2 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest59 µg/L
- ELKO CITY OF59 µg/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHP55 µg/LSample date: 2023-02-20 to 2024-02-12
Perfluorohexanesulfonic acid (PFHxS)Detected in 1 system of 2 tested10 ng/L federal MCL (2024) · US EPAHighest29 ng/L
- ELKO CITY OF29 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
Perfluorooctanoic acid (PFOA)Detected in 1 system of 2 tested4.0 ng/L federal MCL (2024) · US EPAHighest5.9 ng/L
- ELKO CITY OF5.9 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
Lead (90th percentile)Detected in 1 system of 2 tested15 µg/L federal action level · US EPAHighest3 µg/L
- ELKO CITY OF3 µg/LMonitoring period: 2023–2025
- GREAT BASIN WATER CO SPRING CREEK MHPNot detectedMonitoring period: 2023–2025
Perfluorobutanesulfonic acid (PFBS)Detected in 1 system of 2 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest15 ng/L
- ELKO CITY OF15 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
Perfluorohexanoic acid (PFHxA)Detected in 1 system of 2 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest8.2 ng/L
- ELKO CITY OF8.2 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
Perfluoropentanesulfonic acid (PFPeS)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest7 ng/L
- ELKO CITY OF7 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
1 more contaminant detectedShow
Perfluoropentanoic acid (PFPeA)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest7.9 ng/L
- ELKO CITY OF7.9 ng/LSample date: 2024-07-15 to 2025-01-22
- GREAT BASIN WATER CO SPRING CREEK MHPNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-02-20 to 2024-02-12
22 PFAS tested, none detected in any systemShow
Tested in these 2 systems: ELKO CITY OF, GREAT BASIN WATER CO SPRING CREEK MHP
- 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)
- Perfluorobutanoic acid (PFBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorononanoic acid (PFNA)
- 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 2 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 NevadaLargest water systems
- ElkoELKO CITY OF · NV000027223,000 served
- Spring CreekGREAT BASIN WATER CO SPRING CREEK MHP · NV00050273,640 served
Frequently asked
How does Elko County tap water compare across cities?
PurityMap ranks 2 cities in Elko 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 Spring Creek's main water system: GREAT BASIN WATER CO SPRING CREEK MHP · PWSID NV0005027 · Purity Score 100 (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 Elko County cities had a PFAS sample above a 2024 EPA limit?
1 of 2 Elko County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Elko (PFOS 46 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 1.
Is there lead in Elko County tap water?
Utilities report lead as a 90th-percentile result from home taps. 1 of 2 Elko 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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