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

Ralston Water Treatment Plant

Ralston Water Treatment Plant (EPA ID IA1471069) in Glidden, IA supplies groundwater (wells) to about 75 people: no health-based violations since 2016, latest lead result 1.6 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 served75
Connections38
Sourcegroundwater (wells)
WholesalerNo

Health-based violations

No health-based violations reported since 2016.

Lead

Jan 20211.6 ppb
Jan 20182.2 ppb
Jan 20152.2 ppb
Jan 20123.4 ppb
Jan 20094.4 ppb
Jan 20066 ppb
Jan 20034.4 ppb
Jan 20000.3 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 Ralston Water Treatment Plant had drinking water violations?

No health-based violations reported since 2016.

What is the lead level in Ralston Water Treatment Plant water?

The latest 90th-percentile lead result (Jan 2021) was 1.6 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does Ralston Water Treatment Plant 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).