- EPA's UCMR 5 testing looked for 30 contaminants here and found 8.
- Lithium: found in 36 of 52 samples, average 9.27 µg/L, highest 22.2 µg/L (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFHxS (a PFAS): found in 4 of 52 samples, average 1.2 ppt, highest 18.3 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFBS (a PFAS): found in 11 of 52 samples, average 1.1 ppt, highest 12.2 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFHxA (a PFAS): found in 5 of 52 samples, average 0.40 ppt, highest 4.5 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFPeA (a PFAS): found in 4 of 52 samples, average 0.30 ppt, highest 4.4 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFNA (a PFAS): found in 1 of 52 samples, average 0.10 ppt, highest 7.1 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFOS (a PFAS): found in 1 of 52 samples, average 0.10 ppt, highest 5.2 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- PFOA (a PFAS): found in 1 of 52 samples, average 0.10 ppt, highest 4.5 ppt (EPA UCMR 5 testing, Jan 2024–Jan 2025)
- Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2024–Dec 31, 2026). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink Crestline tap water? What EPA records show
EPA CA3610015 · serves San Bernardino County, CA · about 11,650 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Crestline Village CWD - Division 10 (EPA CA3610015)
EPA data as of October 14, 2026. For Crestline's main utility, Crestline Village CWD - Division 10: We found no health-based violations in EPA's records for this system (CA3610015) since July 1, 2021, as of October 14, 2026. EPA's UCMR 5 testing looked for 30 contaminants here and found 8. This is public data, not a test of your tap.
What EPA records show for Crestline Village CWD - Division 10, as of October 14, 2026
We found no health-based violations in EPA's records for this system (CA3610015) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Crestline Village CWD - Division 10 (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 0 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2024–Dec 31, 2026). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 8.
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 Crestline Village CWD - Division 10 use chloramine?
We didn't find chloramine in Crestline Village CWD - Division 10's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.