Tap WaterIndex

← Iowa

Tap water quality report

Keokuk Municipal Water Works

EPA monitoring tested this supplier for 90 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

90
contaminants tested
20
detected
9,900
people served
0
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Surface water
Ownership
Local government
Counties served
Lee

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
16
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 1989-07-01 → 1990-06-30
MR Monitoring Resolved 1989-07-01 → 1990-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30
MR Monitoring Resolved 1988-07-01 → 1991-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0110 µg/L 3/4 2025
PFBS 0.0063 µg/L 1/4 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
11.65 µg/L
No EPA limit set
worst single sample: 13 µg/L
128/128 SYR4 2012–2019
Chloroform
72.65 µg/L
No EPA limit set
worst single sample: 120 µg/L
128/128 SYR4 2012–2019
Dichloroacetic Acid
25.65 µg/L
No EPA limit set
worst single sample: 44 µg/L
128/128 SYR4 2012–2019
TTHM
84.3 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 130 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
36.65 µg/L 61%
of the EPA limit 60 µg/L
worst single sample: 63 µg/L
128/128 SYR4 2012–2019
Trichloroacetic Acid
11 µg/L
No EPA limit set
worst single sample: 15 µg/L
128/128 SYR4 2012–2019
Dibromochloromethane
3.1 µg/L
No EPA limit set
worst single sample: 3.7 µg/L
122/128 SYR4 2012–2019
Nitrate
6400 µg/L 64%
of the EPA limit 10000 µg/L
worst single sample: 7300 µg/L
58/64 SYR4 2012–2019
Copper
44 µg/L 3.4%
of the EPA limit 1300 µg/L
worst single sample: 60 µg/L
29/62 SYR4 2014–2017
Lead
23.4 µg/L 156%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 30 µg/L
29/62 SYR4 2014–2017
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2023
Monochloroacetic Acid
4 µg/L
No EPA limit set
 13/128 SYR4 2012–2019
Lithium
17 µg/L
No EPA limit set
 4/4 UCMR-5 2025
P-Dichlorobenzene
1.04 µg/L 1.4%
of the EPA limit 75 µg/L
worst single sample: 1.1 µg/L
4/7 SYR4 2012–2019
Atrazine
0.2000 µg/L 6.7%
of the EPA limit 3 µg/L
 1/4 SYR4 2012–2019
Dalapon
0.5000 µg/L 0.3%
of the EPA limit 200 µg/L
 1/2 SYR4 2013–2016
Dibromoacetic Acid
1 µg/L
No EPA limit set
 1/128 SYR4 2012–2019
Fluoride
810 µg/L 20%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
70 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBariumBenzeneBenzo(A)PyreneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)DichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KEOKUK MUNICIPAL WATER WORKS
Phone
319-524-2011
Email
[email protected]

Frequently asked questions about Keokuk Municipal Water Works

Is Keokuk Municipal Water Works tap water safe to drink?

EPA monitoring detected 20 contaminants in Keokuk Municipal Water Works's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Keokuk Municipal Water Works's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Keokuk Municipal Water Works serve?

Keokuk Municipal Water Works reports serving 9,900 people in Iowa, per its EPA record.

Has Keokuk Municipal Water Works had any water quality violations?

The EPA has 16 violations on file for Keokuk Municipal Water Works, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.