Home/ Directory/ WA/ DELTA WATER ASSOCIATION

Water system · PWSID WA5318750

DELTA WATER ASSOCIATION

Lynden, WA · ~450 people served

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

PWSID

WA5318750

State

Washington

City

Lynden

Population served

450

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

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

132

Violations on record

0

Unaddressed

68

Health-based

37

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2024. Official EPA record →

Max contaminant level (MCL) · Nitrate health-based began Jan 2024 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2023 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2022 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Jan 2019 Resolved
Max contaminant level (MCL) · Nitrate health-based began Apr 2017 Resolved

Recent enforcement actions

  • State action · SOX Oct 2024
  • State action · SFL Sep 2023
  • State action · SOX Jan 2023
  • State action · SOX Oct 2019
  • State action · SOX Jul 2018
  • State action · SOX Jan 2017
  • State action · SOX Oct 2011
  • State action · SFL Aug 2011

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

Atrazine

1 station · latest Nov 2022

19.5 · max 263 ng/L · 125

Nitrate

1 station · latest Dec 2022

2.85 · max 4.61 mg/L · 7

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 WA5318750 — 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.