City overview · Harris County

PFAS in Humble, TX

Moderate

EPA UCMR 5 tested 18 public water systems serving the Humble area across 5 ZIP codes. PFAS were detected in Humble's water, but below EPA limits.

Water systems tested

Systems above EPA limits

ZIP codes covered

County

Harris County, Texas

Plain English

01What this means for Humble

Testing under EPA UCMR 5 found PFAS in the Humble area at concentrations below the federal Maximum Contaminant Level. "Below the limit" is not the same as "none" — levels vary by utility. Check your specific ZIP code below for the system serving your home. A certified point-of-use filter is a low-cost way to reduce exposure further if you'd like.

By utility

02Water systems serving Humble

By ZIP code

03Find your exact result

Contamination can differ block to block. Select your ZIP code for the precise reading at the utility that serves your address.

77338 77339 77345 77346 77396

Source & Methodology

About this data

Source

EPA UCMR 5

Sampling period

January 2023 – December 2025

Aggregation

18 utilities across 5 ZIP codes

Detection threshold (MRL)

~1.5–2 ppt

City-level figures aggregate the individual public water systems tested under EPA UCMR 5 whose service area falls within the Humble area. Values reflect water quality at the treatment plant; your home's plumbing can affect what reaches your tap. Select your ZIP above for the utility-specific reading.