Is Lodi Waterworks Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Columbia

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-10-17
TT	Health-based	Resolved	2023-12-11
TT	Health-based	Resolved	2023-12-11
TT	Health-based	Resolved	2023-12-11
TT	Health-based	Resolved	2023-12-11
MCL	Health-based	Archived	1991-07-01 → 1991-07-31
MCL	Health-based	Archived	1991-06-01 → 1991-06-30
MCL	Health-based	Archived	1991-06-01 → 1991-06-30
MCL	Health-based	Archived	1991-06-01 → 1991-06-30
MCL	Health-based	Archived	1991-06-01 → 1991-06-30

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 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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Fluoride	1275.5 µg/L 32% of the EPA limit 4000 µg/L worst single sample: 6800 µg/L	110/207	SYR4	2012–2019
Nitrate	6500 µg/L 65% of the EPA limit 10000 µg/L worst single sample: 7100 µg/L	86/86	SYR4	2012–2019
Copper	192.5 µg/L 15% of the EPA limit 1300 µg/L worst single sample: 240 µg/L	20/20	SYR4	2014–2017
Lead	28.5 µg/L 190% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 380 µg/L	20/20	SYR4	2014–2017
Lead	0.0180 mg/L 120% above the EPA limit of 0.0150 mg/L	19/19	LCR	2022
Dibromoacetic Acid	0.8920 µg/L No EPA limit set worst single sample: 0.9200 µg/L	9/9	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	1.27 µg/L 2.1% of the EPA limit 60 µg/L worst single sample: 1.33 µg/L	9/9	SYR4	2013–2019
Dibromochloromethane	2.125 µg/L No EPA limit set worst single sample: 2.3 µg/L	8/12	SYR4	2013–2019
TTHM	5.4175 µg/L 6.8% of the EPA limit 80 µg/L worst single sample: 5.82 µg/L	8/9	SYR4	2013–2019
Bromoform	2.17 µg/L No EPA limit set worst single sample: 2.2 µg/L	7/12	SYR4	2013–2019
Barium	29.5 µg/L 1.5% of the EPA limit 2000 µg/L worst single sample: 30 µg/L	6/6	SYR4	2014–2017
Nitrate-Nitrite	5475 µg/L 55% of the EPA limit 10000 µg/L worst single sample: 5600 µg/L	6/6	SYR4	2014–2017
Chromium	1.98 µg/L 2% of the EPA limit 100 µg/L worst single sample: 2 µg/L	5/6	SYR4	2014–2017
Bromodichloromethane	1.44 µg/L No EPA limit set worst single sample: 1.5 µg/L	4/12	SYR4	2013–2019
Combined Radium (-226 And -228)	1.39 pCi/L 28% of the EPA limit 5 pCi/L worst single sample: 1.4 pCi/L	3/3	SYR4	2014–2017
Antimony, Total	0.2800 µg/L 4.7% of the EPA limit 6 µg/L	1/6	SYR4	2014–2017
Arsenic	1.2 µg/L 12% of the EPA limit 10 µg/L	1/6	SYR4	2014–2017
Chloroform	3.5 µg/L No EPA limit set	1/10	SYR4	2013–2019
Dichloroacetic Acid	0.1800 µg/L No EPA limit set	1/9	SYR4	2013–2019

54 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Lodi Waterworks

Is Lodi Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Lodi 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 Lodi Waterworks's water?

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

How many people does Lodi Waterworks serve?

Lodi Waterworks reports serving 3,146 people in Wisconsin, per its EPA record.

Has Lodi Waterworks had any water quality violations?

The EPA has 34 violations on file for Lodi Waterworks, of which 11 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.