PWSID
CA4810008
State
California
City
ELMIRA
Population served
99,650
Primary source
Surface water
Score history
▼ 48 points — the score moved from 100 to 52 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 Mar 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
10 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
5.1 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
3.5 ppt
limit 10 ppt
Lithium
27,700 ppt
limit —
PFBS
3.7 ppt
limit —
Violations & enforcement
3
Violations on record
0
Unaddressed
0
Health-based
5
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Feb 2018. Official EPA record →
Recent enforcement actions
- State action · SOX Feb 2018
- State action · SOX Feb 2018
- State action · SO6 Sep 2017
- State action · SFJ Nov 2002
- State action · SFL Mar 1997
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Nitrate
1 station · latest Jul 2020
Arsenic
1 station · latest Jul 2020
Copper
1 station · latest Jul 2020
Fluoride
1 station · latest Jul 2020
Lead
1 station · latest Jul 2020
Uranium
1 station · latest Jul 2020
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system CA4810008 — 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.