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Water system · PWSID CA2410006

DELHI CWD

DELHI, CA · ~7,784 people served

Check your exact address → DELHI overview
67
Fair
PurityRadar safety score

PWSID

CA2410006

State

California

City

DELHI

Population served

7,784

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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 May 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

7.3 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFHxS

Perfluorohexanesulfonic acid

8 ppt

limit 10 ppt

Near EPA limit

Violations & enforcement

13

Violations on record

1

Unaddressed

4

Health-based

26

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2016. Official EPA record →

Reporting · EPA contaminant 5200 began Jul 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jul 2014 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jul 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2013 Resolved
Monitoring & reporting · Total coliform began Oct 2004 Resolved
Monitoring & reporting · Total coliform began Oct 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 1996 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1994 Resolved

Recent enforcement actions

  • State action · SOX Sep 2016
  • State action · SOX Sep 2016
  • State action · SOX Sep 2016
  • State action · SOX Sep 2016
  • State action · SIA Aug 2016
  • State action · SIA Aug 2016
  • State action · SIA Apr 2016
  • State action · SIA Apr 2015

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

Arsenic

1 station · latest Feb 2021

42.1 · max 42.1 ug/l · 1

Fluoride

1 station · latest Feb 2021

0.16 · max 0.16 mg/l · 1

Lead

1 station · latest Feb 2021

0.115 · max 0.115 ug/l · 1

Manganese

1 station · latest Feb 2021

34.1 · max 34.1 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 CA2410006 — 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.