TapGraded
A

OTTUMWA WATER WORKS

Ottumwa, IA · 25,529 served

OTTUMWA WATER WORKS serves 25,529 people in Ottumwa, IA. It has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Score breakdown

Health-based violations (5y)

0

Monitoring violations (5y)

4

Currently unaddressed

0

Overall score

92/100

Violation history (last 5 years)

2022
2024
Health-based Monitoring / reporting

Get alerted when OTTUMWA WATER WORKS gets a violation

We'll only email you about this water system. Unsubscribe anytime.

Lead (Lead and Copper Rule)

EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).

90th-percentile lead sample 0.8 ppb
0 ppb EPA action level: 15 ppb

PFAS (UCMR5 occurrence data)

PFNA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFOA (not detected) 0 ppt
0 ppt EPA MCL: 4 ppt
PFOS (not detected) 0 ppt
0 ppt EPA MCL: 4 ppt
HFPO-DA (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt
PFHxS (not detected) 0 ppt
0 ppt EPA MCL: 10 ppt

System details

System type
Community water system
Water source
Surface water
Ownership
Local government
Service connections
9,800

Worried about what's in your tap?

See which water filters are certified to remove the contaminants found in your area.

Find a filter that matches your water

Frequently asked questions

Is Ottumwa, IA tap water safe to drink?

OTTUMWA WATER WORKS has 0 health-based violations in the last 5 years. TapGraded gives this system an A.

Does OTTUMWA WATER WORKS have lead in its water?

The most recent 90th-percentile lead sample is 0.8 ppb, versus the EPA action level of 15 ppb.

Has PFAS been detected in OTTUMWA WATER WORKS's water?

This system was tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.

Source: EPA SDWIS/ECHO · Data as of 2026Q2