System name: Harford County D.P.W.
EPA PWS ID: MD0120016
Location: Abingdon, MD
Population served: 104,567
Water source: Surface water
Primary EPA source: EPA ECHO record for MD0120016

Make sure this is the system tied to your address before using these results to make a decision about your own water. A ZIP code is not a street address.

EPA lab monitoring (UCMR 5)

EPA UCMR 5 monitoring (June 2023–Mar. 2024) checked this system for 30 chemicals (29 PFAS and lithium) and detected none above EPA's minimum reporting levels.

UCMR 5 results are monitoring data, not a compliance determination. PFAS compliance is governed by separate EPA drinking-water rules. Some PFAS rule changes are proposed for 2026 — see what's proposed.

Lead at customer taps

Lead at sampled customer taps, 90th percentile (Jan. 2021–Dec. 2023): 0 ppb. EPA's current action level is 15 ppb; its health goal (MCLG) is 0.

Lead is regulated with an action level rather than a standard MCL. EPA's lead action level is 15 ppb today; the Lead and Copper Rule Improvements lower it to 10 ppb starting Nov. 1, 2027.

Violations on the federal record

The EPA record shows 4 violations, 0 health-based.

Type	Rule / contaminant	Since
Record · missed required testing or reporting	Total Trihalomethanes (TTHM)	2024
Record · missed required testing or reporting	Haloacetic Acids (HAA5)	2024
Record · missed required testing or reporting	Lead & Copper Rule	2011
Record · missed required testing or reporting	Nitrate	2022

On a private well? EPA public-system data does not describe your individual well. Test your water directly.

What the numbers mean

EPA uses two different benchmarks: the legal limit (MCL) and the health goal (MCLG). They are not always the same number. Read EPA's explanation →

Open the interactive report →What the government says

Sources: U.S. EPA SDWIS (system record and violations, queried live) · EPA UCMR 5 final dataset · EPA SDWIS lead & copper 90th-percentile results. EPA data can lag the latest tests.