City overview · Harris County

PFAS in Tomball, TX

Low Level

EPA UCMR 5 tested 10 public water systems serving the Tomball area across 2 ZIP codes. Only trace PFAS were detected across Tomball's tested systems.

Water systems tested

Systems above EPA limits

ZIP codes covered

County

Harris County, Texas

Plain English

01What this means for Tomball

The water systems serving the Tomball area measured only low, trace concentrations of PFAS — well below the EPA's Maximum Contaminant Levels. For most residents this represents minimal risk from drinking water. Review your specific ZIP below, and check your utility's annual Consumer Confidence Report for year-over-year trends.

By utility

02Water systems serving Tomball

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.

77375 77377

Source & Methodology

About this data

Source

EPA UCMR 5

Sampling period

January 2023 – December 2025

Aggregation

10 utilities across 2 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 Tomball 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.