PWSID
CA1510045
State
California
City
TEHACHAPI
Population served
9,857
Primary source
Groundwater
Score history
▼ 49 points — the score moved from 100 to 51 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Dec 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
7.8 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
5.4 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
5.5 ppt
limit 10 ppt
PFBS
5.5 ppt
limit —
PFPeA
5.4 ppt
limit —
PFHxA
4.9 ppt
limit —
PFHpA
3.7 ppt
limit —
Violations & enforcement
5
Violations on record
0
Unaddressed
4
Health-based
13
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Jun 2017. Official EPA record →
Recent enforcement actions
- State action · SOX Jun 2017
- State action · SFL Feb 2017
- State action · SFL Jul 2015
- State action · SOX Jun 2015
- State action · SIA Feb 2014
- State action · SOX Nov 2013
- EPA/federal action · EOX Mar 2000
- State action · SFM Feb 1994
This profile is built from EPA public records for system CA1510045 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.