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

Wapello Rural Water Assoc.

Wapello Rural Water Assoc. (EPA ID IA9000742) in Ottumwa, IA supplies surface water (rivers, lakes) to about 17,263 people: no health-based violations since 2016, latest lead result 1.2 ppb, PFAS 1 detected.

System facts

People served17,263
Connections7,560
Sourcesurface water (rivers, lakes)
WholesalerNo

Health-based violations

No health-based violations reported since 2016.

Lead

Jan 20231.2 ppb
Jul 20221.5 ppb
Jan 20221.7 ppb
Jan 20171 ppb
Jan 20141 ppb
Jan 20111 ppb
Jan 20084.9 ppb
Jan 20050 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

CompoundHighest resultSamples with detectionEPA limit
PFBA5 ppt1 of 7—
HFPO-DA (GenX)not detected0 of 7—
PFPeAnot detected0 of 7—
PFBSnot detected0 of 7—
PFHpAnot detected0 of 7—
PFHxSnot detected0 of 7—
PFNAnot detected0 of 7—
PFOSnot detected0 of 74 ppt MCL
PFOAnot detected0 of 74 ppt MCL
PFDAnot detected0 of 7—
PFHxAnot detected0 of 7—

EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.

ZIP codes served

ZIP codes whose center lies in this system’s service area or that the state lists for it.

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 Wapello Rural Water Assoc. had drinking water violations?

No health-based violations reported since 2016.

What is the lead level in Wapello Rural Water Assoc. water?

The latest 90th-percentile lead result (Jan 2023) was 1.2 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does Wapello Rural Water Assoc. have PFAS in its water?

PFAS were detected, with PFOA and PFOS below 4.0 ppt (highest not detected).