EPA data as of Oct 2026 · page updated 2026-10-30

Fairfax Water Supply

Fairfax Water Supply (EPA ID IA5731032) in Fairfax, IA supplies groundwater (wells) to about 2,828 people: no health-based violations since 2016, latest lead result 2 ppb, PFAS not tested.

Service area

EPA service-area boundary (state-supplied or EPA-modeled)
Water utility service area PFOA/PFOS ≥ 4 ppt Lead > 15 ppb 5+ violations Superfund site (active) proposed cleaned up Circles: other water systems flagged nearby; size = people served. Tap any symbol for details.

System facts

People served2,828
Connections1,400
Sourcegroundwater (wells)
WholesalerNo

Health-based violations

No health-based violations reported since 2016.

Lead

Jan 20222 ppb
Jan 20196 ppb
Jan 20185 ppb
Jan 201710.3 ppb
Jan 20169 ppb
Jul 201510.5 ppb
Jan 20156.1 ppb
Jan 20147.5 ppb

90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.

PFAS

This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).

ZIP codes served

ZIP codes whose center lies in this system’s service area.

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

Has Fairfax Water Supply had drinking water violations?

No health-based violations reported since 2016.

What is the lead level in Fairfax Water Supply water?

The latest 90th-percentile lead result (Jan 2022) was 2 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does Fairfax Water Supply have PFAS in its water?

This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).