HOWARD COUNTY D.P.W. DISTRIBUTION

COLUMBIA, MD · ~286,158 people served

Check your exact address → COLUMBIA overview

100

Excellent

PurityRadar safety score

PWSID

MD0130002

State

Maryland

City

COLUMBIA

Population served

286,158

Primary source

SWP

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

PFPeA

3.6 ppt

limit —

No federal limit

PFHxA

3.4 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2022. Official EPA record →

Other · EPA contaminant 7000 began Jul 2022 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2015 Resolved

Monitoring & reporting · Total coliform began Dec 2011 Resolved

Monitoring & reporting · Total coliform began Apr 2010 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1992 Resolved

Recent enforcement actions

State action · SIA Oct 2022
State action · SOX Oct 2022
State action · SOX Feb 2019
State action · SOX Feb 2019
State action · SIA Sep 2018
State action · SIA Mar 2018
State action · SIA Sep 2017
State action · SOX Feb 2015

This profile is built from EPA public records for system MD0130002 — 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.