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Tap water quality report

Humboldt Municipal Water Dept

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
4,792
people served
5
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water under surface influence
Ownership
Local government
Counties served
Humboldt

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.

5
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2009-08-01 → 2009-08-31
MCL Health-based Resolved 2009-08-01 → 2009-08-31
MCL Health-based Resolved 2009-08-01 → 2009-08-31
MCL Health-based Resolved 2009-08-01 → 2009-08-31
MCL Health-based Resolved 2009-08-01 → 2009-08-31
MR Monitoring Archived 2020-05-01 → 2020-05-31

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
Nitrate
6885 µg/L 69%
of the EPA limit 10000 µg/L
worst single sample: 7660 µg/L
64/64 SYR4 2012–2019
Bromodichloromethane
9.885 µg/L
No EPA limit set
worst single sample: 11 µg/L
24/24 SYR4 2013–2018
Copper
15.24 µg/L 1.2%
of the EPA limit 1300 µg/L
worst single sample: 20 µg/L
24/80 SYR4 2013–2019
Dibromochloromethane
8.34 µg/L
No EPA limit set
worst single sample: 9 µg/L
24/24 SYR4 2013–2018
Bromoform
2.77 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
23/24 SYR4 2013–2018
Chloroform
14.9 µg/L
No EPA limit set
worst single sample: 16 µg/L
23/24 SYR4 2013–2018
Dibromoacetic Acid
3 µg/L
No EPA limit set
worst single sample: 4 µg/L
23/24 SYR4 2013–2018
TTHM
34.9 µg/L 44%
of the EPA limit 80 µg/L
worst single sample: 39 µg/L
23/24 SYR4 2013–2018
Dichloroacetic Acid
5.1 µg/L
No EPA limit set
worst single sample: 7 µg/L
20/24 SYR4 2013–2018
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Total Haloacetic Acids (HAA5)
11.25 µg/L 19%
of the EPA limit 60 µg/L
worst single sample: 12 µg/L
6/24 SYR4 2013–2018
Lead
2.84 µg/L 19%
of the EPA limit 15 µg/L
worst single sample: 3 µg/L
5/80 SYR4 2013–2019
Monochloroacetic Acid
4.459 µg/L
No EPA limit set
worst single sample: 4.66 µg/L
4/24 SYR4 2013–2018
Lithium
14 µg/L
No EPA limit set
 4/4 UCMR-5 2025
Trichloroacetic Acid
1 µg/L
No EPA limit set
 2/24 SYR4 2013–2018
Xylenes, Total
1.5 µg/L 0%
of the EPA limit 10000 µg/L
 2/4 SYR4 2014–2017
Arsenic
2.3 µg/L 23%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
23 µg/L 1.2%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Fluoride
500 µg/L 13%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
Selenium
12.5 µg/L 25%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
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, TotalAtrazineBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateHfpo-DaLassoMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HUMBOLDT MUNICIPAL WATERWORKS
Phone
515-332-3435
Email
[email protected]

Frequently asked questions about Humboldt Municipal Water Dept

Is Humboldt Municipal Water Dept tap water safe to drink?

EPA monitoring detected 20 contaminants in Humboldt Municipal Water Dept'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 Humboldt Municipal Water Dept's water?

EPA monitoring detected Nitrate, Bromodichloromethane, Copper, Dibromochloromethane, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Humboldt Municipal Water Dept serve?

Humboldt Municipal Water Dept reports serving 4,792 people in Iowa, per its EPA record.

Has Humboldt Municipal Water Dept had any water quality violations?

The EPA has 6 violations on file for Humboldt Municipal Water Dept, of which 5 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.