Is Michigan City Department of Water Works Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: LaPorte

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
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
MCL	Health-based	Resolved	2011-09-01 → 2011-09-30
Other	Monitoring	Resolved	2025-07-01
Other	Monitoring	Resolved	2025-07-01
Other	Monitoring	Resolved	2024-07-01
Other	Monitoring	Resolved	2024-07-01
Other	Monitoring	Resolved	2024-07-01

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
TTHM	24.31 µg/L 30% of the EPA limit 80 µg/L worst single sample: 30.1 µg/L	127/128	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	7.58 µg/L 13% of the EPA limit 60 µg/L worst single sample: 10.8 µg/L	89/128	SYR4	2012–2019
Lead	9.49 µg/L 63% of the EPA limit 15 µg/L worst single sample: 11 µg/L	24/30	SYR4	2017
Copper	786 µg/L 60% of the EPA limit 1300 µg/L worst single sample: 810 µg/L	17/30	SYR4	2017
Lead	0.0019 mg/L 13% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Barium	21.65 µg/L 1.1% of the EPA limit 2000 µg/L worst single sample: 22 µg/L	8/8	SYR4	2012–2019
Bromodichloromethane	8.51 µg/L No EPA limit set worst single sample: 9 µg/L	8/8	SYR4	2012–2019
Chloroform	12.6 µg/L No EPA limit set worst single sample: 14 µg/L	8/8	SYR4	2012–2019
Dibromochloromethane	3.865 µg/L No EPA limit set worst single sample: 3.9 µg/L	8/8	SYR4	2012–2019
Fluoride	1200 µg/L 30% of the EPA limit 4000 µg/L	8/8	SYR4	2012–2019
Nitrate	330 µg/L 3.3% of the EPA limit 10000 µg/L	8/8	SYR4	2012–2015
Nitrate-Nitrite	338.5 µg/L 3.4% of the EPA limit 10000 µg/L worst single sample: 340 µg/L	4/4	SYR4	2016–2019
Chromium	5.085 µg/L 5.1% of the EPA limit 100 µg/L worst single sample: 5.3 µg/L	2/8	SYR4	2012–2019
Selenium	8.045 µg/L 16% of the EPA limit 50 µg/L worst single sample: 8.2 µg/L	2/8	SYR4	2012–2019
Thallium, Total	1.3 µg/L 65% of the EPA limit 2 µg/L	1/8	SYR4	2012–2019

88 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: JOHNSEN, CHRISTOPHER
Phone: 219-874-3228
Email: [email protected]

Frequently asked questions about Michigan City Department of Water Works

Is Michigan City Department of Water Works tap water safe to drink?

EPA monitoring detected 15 contaminants in Michigan City Department of 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 Michigan City Department of Water Works's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Lead, Copper, Lead, and others. The full list with the level and data source for each is above.

How many people does Michigan City Department of Water Works serve?

Michigan City Department of Water Works reports serving 33,996 people in Indiana, per its EPA record.

Has Michigan City Department of Water Works had any water quality violations?

The EPA has 61 violations on file for Michigan City Department of Water Works, 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.