Is manganese a problem in Louisiana drinking water?

Manganese was detected above the EPA limit of 50 µg/L (SMCL / health advisory) in 45 ZIP codes across Louisiana. Check the table above for specific areas. Consider Oxidation Filter or Reverse Osmosis if your ZIP is affected.

How widespread is manganese in Louisiana water?

Manganese was detected in 45 ZIP codes across Louisiana. 45 ZIPs exceeded the EPA limit. See the table above for details.

Manganese · Louisiana

Manganese in Louisiana Drinking Water — 45 ZIPs Tested

EPA data analysis for manganese in Louisiana drinking water systems

ZIPs with Detections

ZIPs with Violations

6.2%

Violation Rate

50 µg/L (SMCL / health advisory)

EPA Limit

Moderate

Health Risk

Oxidation Filter or Reverse Osmosis

Best Filter Method

Manganese Contamination in Louisiana

ZipCheckup analyzed drinking water data across 723 ZIP codes in Louisiana for manganese contamination. 45 ZIP codes have reported manganese detections, and 45 have EPA violations on record.

The violation rate for manganese in Louisiana is 6.2% of all ZIP codes — higher than the national average.

EPA Standard for Manganese

The EPA maximum contaminant level (MCL) for manganese is 50 µg/L (SMCL / health advisory), governed by the Secondary Drinking Water Standards. Water systems that exceed this limit must take corrective action and notify consumers.

Worst ZIP Codes for Manganese in Louisiana

These ZIP codes reported the highest manganese levels in Louisiana based on CCR reports and EPA data:

Lowest Manganese Levels in Louisiana

These ZIP codes had the lowest reported manganese detections in Louisiana:

Health Effects of Manganese

At elevated levels, manganese causes neurological effects similar to Parkinson's disease (tremors, difficulty walking). Infants and children are most vulnerable — studies link high manganese in water to lower IQ and behavioral problems.

How to Remove Manganese From Drinking Water

The most effective treatment for manganese removal is Oxidation Filter or Reverse Osmosis. Look for filters certified under NSF 42 / NSF 58 standards.

Check Your ZIP Code

Use the ZipCheckup water quality search to see manganese data for your specific water system in Louisiana.

Worst ZIP Codes for Manganese in Louisiana

Ranked by highest manganese detection level.

Rank	ZIP Code	City	Level Detected	EPA Limit	Status
1	70722	Clinton	0.17 mg/L	0.05 mg/L	Exceeds
2	70734	Geismar	0.17 mg/L	0.05 mg/L	Exceeds
3	70769	Prairieville	0.17 mg/L	0.05 mg/L	Exceeds
4	70801	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
5	70802	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
6	70803	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
7	70804	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
8	70805	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
9	70806	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
10	70807	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
11	70808	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
12	70809	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
13	70810	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
14	70811	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
15	70812	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
16	70813	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
17	70814	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
18	70815	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
19	70816	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds
20	70817	Baton Rouge	0.17 mg/L	0.05 mg/L	Exceeds

Lowest Manganese Levels in Louisiana

ZIP Code	City	Level Detected
70898	Baton Rouge	0.17 mg/L
70896	Baton Rouge	0.17 mg/L
70895	Baton Rouge	0.17 mg/L
70894	Baton Rouge	0.17 mg/L
70893	Baton Rouge	0.17 mg/L
70892	Baton Rouge	0.17 mg/L
70891	Baton Rouge	0.17 mg/L
70884	Baton Rouge	0.17 mg/L
70879	Baton Rouge	0.17 mg/L
70874	Baton Rouge	0.17 mg/L

Louisiana Water Quality Overview: See statewide water quality rankings on the Louisiana water quality page.

Learn more about Manganese: Read the full guide on Manganese in drinking water.

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