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Tap water quality report

Thunder Hills Home & Utility Assoc.

EPA monitoring tested this supplier for 60 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

60
contaminants tested
15
detected
300
people served
4
health-based violations
Iowa rankingsLead in IowaPFAS in Iowa
Water source
Ground water
Ownership
Private
Counties served
Dubuque

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.

4
health-based violations
99
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MCL Health-based Resolved 1992-07-01 → 1992-07-31
MR Monitoring Resolved 2005-07-01 → 2007-08-31
MR Monitoring Resolved 2005-07-01 → 2007-08-31
MR Monitoring Resolved 2005-07-01 → 2007-08-31
MR Monitoring Resolved 2005-07-01 → 2007-08-31
MR Monitoring Resolved 2005-07-01 → 2007-08-31
MR Monitoring Resolved 2002-07-01 → 2002-08-02

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
0.0046 mg/L 31%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Copper
437.85 µg/L 34%
of the EPA limit 1300 µg/L
worst single sample: 450 µg/L
10/10 SYR4 2014–2017
Lead
5.74 µg/L 38%
of the EPA limit 15 µg/L
worst single sample: 6.5 µg/L
9/10 SYR4 2014–2017
Bromodichloromethane
2.693 µg/L
No EPA limit set
worst single sample: 2.78 µg/L
3/3 SYR4 2014–2018
Chloroform
5.687 µg/L
No EPA limit set
worst single sample: 6.04 µg/L
3/3 SYR4 2014–2018
Dibromochloromethane
1.272 µg/L
No EPA limit set
worst single sample: 1.29 µg/L
3/3 SYR4 2014–2018
TTHM
9.382 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 9.79 µg/L
3/3 SYR4 2014–2018
Trichloroacetic Acid
2.342 µg/L
No EPA limit set
worst single sample: 2.51 µg/L
3/3 SYR4 2014–2018
Combined Radium (-226 And -228)
1.585 pCi/L 32%
of the EPA limit 5 pCi/L
worst single sample: 1.6 pCi/L
2/2 SYR4 2013–2019
Barium
96 µg/L 4.8%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Dibromoacetic Acid
0.6400 µg/L
No EPA limit set
 1/3 SYR4 2014–2018
Dichloroacetic Acid
3.09 µg/L
No EPA limit set
 1/3 SYR4 2014–2018
Fluoride
300 µg/L 7.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Monobromoacetic Acid
1.85 µg/L
No EPA limit set
 1/3 SYR4 2014–2018
Total Haloacetic Acids (HAA5)
8.09 µg/L 13%
of the EPA limit 60 µg/L
 1/3 SYR4 2014–2018
45 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, TotalArsenicAtrazineBenzeneBenzo(A)PyreneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneGlyphosateLassoMercuryMonochloroacetic AcidNitratePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
THUNDER HILLS HOME & UTILITY ASSOC.
Phone
563-543-0354
Email
[email protected]

Frequently asked questions about Thunder Hills Home & Utility Assoc.

Is Thunder Hills Home & Utility Assoc. tap water safe to drink?

EPA monitoring detected 15 contaminants in Thunder Hills Home & Utility Assoc.'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 Thunder Hills Home & Utility Assoc.'s water?

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

How many people does Thunder Hills Home & Utility Assoc. serve?

Thunder Hills Home & Utility Assoc. reports serving 300 people in Iowa, per its EPA record.

Has Thunder Hills Home & Utility Assoc. had any water quality violations?

The EPA has 99 violations on file for Thunder Hills Home & Utility Assoc., of which 4 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.