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Maquoketa Municipal Water

EPA monitoring tested this supplier for 91 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

91
contaminants tested
17
detected
6,128
people served
88
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Local government
Counties served
Jackson

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.

88
health-based violations
147
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31
MCL Health-based Resolved 2003-10-01 → 2003-12-31

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
Copper
118.25 µg/L 9.1%
of the EPA limit 1300 µg/L
worst single sample: 173 µg/L
60/60 SYR4 2013–2019
Lead
12.425 µg/L 83%
of the EPA limit 15 µg/L
worst single sample: 25.1 µg/L
34/60 SYR4 2013–2019
Combined Radium (-226 And -228)
4.415 pCi/L 88%
of the EPA limit 5 pCi/L
worst single sample: 6.2 pCi/L
18/18 SYR4 2012–2019
Lead
0.0071 mg/L 47%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Dibromochloromethane
6.5625 µg/L
No EPA limit set
worst single sample: 6.58 µg/L
6/7 SYR4 2013–2019
Bromodichloromethane
4.89 µg/L
No EPA limit set
worst single sample: 5.17 µg/L
5/7 SYR4 2013–2019
Bromoform
4.412 µg/L
No EPA limit set
worst single sample: 4.6 µg/L
5/7 SYR4 2013–2019
Chloroform
2.16 µg/L
No EPA limit set
worst single sample: 2.26 µg/L
5/7 SYR4 2013–2019
TTHM
17.44 µg/L 22%
of the EPA limit 80 µg/L
worst single sample: 17.7 µg/L
5/7 SYR4 2013–2019
Dibromoacetic Acid
2.8455 µg/L
No EPA limit set
worst single sample: 3.03 µg/L
4/7 SYR4 2013–2019
Barium
63.08 µg/L 3.2%
of the EPA limit 2000 µg/L
worst single sample: 63.6 µg/L
3/3 SYR4 2013
Fluoride
800 µg/L 20%
of the EPA limit 4000 µg/L
 3/3 SYR4 2013
Monochloroacetic Acid
7.166 µg/L
No EPA limit set
worst single sample: 7.2 µg/L
3/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
9.365 µg/L 16%
of the EPA limit 60 µg/L
worst single sample: 9.41 µg/L
3/7 SYR4 2013–2019
Trichloroacetic Acid
0.6250 µg/L
No EPA limit set
worst single sample: 0.6300 µg/L
2/7 SYR4 2013–2019
Lithium
25 µg/L
No EPA limit set
 2/2 UCMR-5 2025
Dichloroacetic Acid
1.81 µg/L
No EPA limit set
 1/6 SYR4 2013–2019
74 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, TotalArsenicAsbestosAtrazineBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitratePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MAQUOKETA MUNICIPAL WATER
Phone
563-652-4881
Email
[email protected]

Frequently asked questions about Maquoketa Municipal Water

Is Maquoketa Municipal Water tap water safe to drink?

EPA monitoring detected 17 contaminants in Maquoketa Municipal Water'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 Maquoketa Municipal Water's water?

EPA monitoring detected Copper, Lead, Combined Radium (-226 And -228), Lead, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Maquoketa Municipal Water serve?

Maquoketa Municipal Water reports serving 6,128 people in Iowa, per its EPA record.

Has Maquoketa Municipal Water had any water quality violations?

The EPA has 147 violations on file for Maquoketa Municipal Water, of which 88 are health-based (a contaminant limit or required treatment was breached) and 1 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.