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Water system · PWSID CA2710008

GREENFIELD, CITY OF

GREENFIELD, CA · ~18,967 people served

Check your exact address → GREENFIELD overview
100
Excellent
PurityRadar safety score

PWSID

CA2710008

State

California

City

GREENFIELD

Population served

18,967

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

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 Oct 2024). Levels in parts per trillion (ppt).

Lithium

21,600 ppt

limit —

No federal limit

Violations & enforcement

6

Violations on record

1

Unaddressed

1

Health-based

12

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2007. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Max contaminant level (MCL) · Total coliform health-based began May 2007 Resolved
Other began Jun 2005 Resolved
Monitoring & reporting · Total coliform began Dec 2002 Resolved
Monitoring & reporting · Nitrate began Jan 2001 Resolved
Monitoring & reporting · Total coliform began Mar 1995 Resolved

Recent enforcement actions

  • State action · SFL Jul 2007
  • State action · SOX Jul 2007
  • State action · SOX Aug 2005
  • State action · SIA Aug 2005
  • State action · SOX Jan 2003
  • State action · SIA Jan 2003
  • State action · SIA Nov 2002
  • State action · SOX Nov 2002

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.

ContaminantMedian · max · samples

Nitrate

1 station · latest Aug 2020

4.05 · max 4.05 mg/l as N · 2

Arsenic

1 station · latest Aug 2020

0.91 · max 0.91 ug/l · 1

Fluoride

1 station · latest Aug 2020

0.21 · max 0.21 mg/l · 1

Lead

1 station · latest Aug 2020

0.117 · max 0.117 ug/l · 1

Uranium

1 station · latest Aug 2020

4.63 · max 4.63 ug/l · 1

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 CA2710008 — 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.