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Tap water quality report

Thor Water Works

EPA monitoring tested this supplier for 60 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

60
contaminants tested
12
detected
181
people served
19
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
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.

19
health-based violations
64
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1995-04-01 → 1999-03-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31

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
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Nitrate
103 µg/L 1%
of the EPA limit 10000 µg/L
 8/16 SYR4 2012–2019
Copper
216 µg/L 17%
of the EPA limit 1300 µg/L
worst single sample: 230 µg/L
5/10 SYR4 2014–2017
Bromodichloromethane
2.25 µg/L
No EPA limit set
worst single sample: 2.4 µg/L
3/3 SYR4 2013–2019
Chloroform
3.58 µg/L
No EPA limit set
worst single sample: 3.7 µg/L
3/3 SYR4 2013–2019
Lead
4.7 µg/L 31%
of the EPA limit 15 µg/L
worst single sample: 5 µg/L
3/10 SYR4 2014–2017
TTHM
7 µg/L 8.8%
of the EPA limit 80 µg/L
worst single sample: 7.4 µg/L
3/3 SYR4 2013–2019
Dichloroacetic Acid
1 µg/L
No EPA limit set
 2/3 SYR4 2013–2019
Combined Radium (-226 And -228)
1.3 pCi/L 26%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Dibromochloromethane
1.3 µg/L
No EPA limit set
 1/3 SYR4 2013–2019
Fluoride
1000 µg/L 25%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Trichloroacetic Acid
1 µg/L
No EPA limit set
 1/3 SYR4 2013–2019
48 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBariumBenzeneBenzo(A)PyreneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylbenzeneGlyphosateLassoMercuryMonobromoacetic AcidMonochloroacetic AcidPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)TrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
THOR WATER WORKS
Phone
515-356-4151
Email
[email protected]

Frequently asked questions about Thor Water Works

Is Thor Water Works tap water safe to drink?

EPA monitoring detected 12 contaminants in Thor 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 Thor Water Works's water?

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

How many people does Thor Water Works serve?

Thor Water Works reports serving 181 people in Iowa, per its EPA record.

Has Thor Water Works had any water quality violations?

The EPA has 64 violations on file for Thor Water Works, of which 19 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.