Tap WaterIndex

Tap water quality report

Trempealeau Waterworks

EPA monitoring tested this supplier for 73 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
17
detected
1,888
people served
23
health-based violations
Water source
Ground water
Ownership
Local government
Counties served
Trempealeau

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.

23
health-based violations
281
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-10-01 → 2009-10-14
MCL Health-based Resolved 2008-10-01 → 2009-10-14
MCL Health-based Resolved 2008-10-01 → 2009-10-14
MCL Health-based Resolved 2008-10-01 → 2009-10-14
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30
MCL Health-based Resolved 1997-09-01 → 1997-09-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
292 µg/L 22%
of the EPA limit 1300 µg/L
 18/20 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2023
Nitrate
172 µg/L 1.7%
of the EPA limit 10000 µg/L
 14/32 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
3.1 pCi/L 21%
of the EPA limit 15 pCi/L
 8/8 SYR4 2012–2017
Lead
6.5 µg/L 43%
of the EPA limit 15 µg/L
 8/20 SYR4 2014–2017
Combined Radium (-226 And -228)
4 pCi/L 80%
of the EPA limit 5 pCi/L
 6/6 SYR4 2012–2017
TTHM
7.07 µg/L 8.8%
of the EPA limit 80 µg/L
 6/8 SYR4 2013–2019
Chloroform
4.84 µg/L
No EPA limit set
 5/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
3.873 µg/L 6.5%
of the EPA limit 60 µg/L
 5/8 SYR4 2013–2019
Barium
13.7 µg/L 0.7%
of the EPA limit 2000 µg/L
 4/4 SYR4 2014–2017
Bromodichloromethane
2.23 µg/L
No EPA limit set
 3/8 SYR4 2013–2019
Monochloroacetic Acid
3.33 µg/L
No EPA limit set
 3/8 SYR4 2013–2019
Dibromochloromethane
2.42 µg/L
No EPA limit set
 2/8 SYR4 2013–2019
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
 2/4 SYR4 2014–2017
Trichloroacetic Acid
1.09 µg/L
No EPA limit set
 2/8 SYR4 2013–2019
Dichloroacetic Acid
1.5 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
Endrin
0.1300 µg/L 6.5%
of the EPA limit 2 µg/L
 1/2 SYR4 2017
56 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, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDibromoacetic AcidDinosebDiquatEndothallEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Trempealeau Waterworks

Is Trempealeau Waterworks tap water safe to drink?

EPA monitoring detected 17 contaminants in Trempealeau Waterworks'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 Trempealeau Waterworks's water?

EPA monitoring detected Copper, Lead, Nitrate, Gross Alpha, Excl. Radon And U, Lead, and others. The full list with the level and data source for each is above.

How many people does Trempealeau Waterworks serve?

Trempealeau Waterworks reports serving 1,888 people, per its EPA record.

Has Trempealeau Waterworks had any water quality violations?

The EPA has 281 violations on file for Trempealeau Waterworks, of which 23 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.