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Tap water quality report

Mccomb, MS

EPA monitoring detected 2 contaminants across the 4 water suppliers serving Mccomb. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

4
water suppliers
20,415
people served
2
contaminants found
Mississippi rankings Lead in Mississippi PFAS in Mississippi

What was found in Mccomb's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Lithium
14.2 µg/L
No EPA limit set
Main supplier: CITY OF MCCOMB · 12,041 people · 2024
Highest in the city: 22 µg/L — SUNNYHILL WATER ASSOCIATION · 3,833 people · 2024
2/4 UCMR-5
Lead
0.0056 mg/L 37%
of the EPA limit 0.0150 mg/L
Main supplier: CITY OF MCCOMB · 12,041 people · 2025
Highest in the city: 0.0060 mg/L — FRIENDSHIP COMMUNITY W/A · 2,434 people · 2018
4/4 LCR
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Mccomb

SupplierPopulation served
CITY OF MCCOMB 12,041
SUNNYHILL WATER ASSOCIATION 3,833
FRIENDSHIP COMMUNITY W/A 2,434
EAST PIKE WATER ASSN. 2,107

Frequently asked questions about Mccomb tap water

Is Mccomb tap water safe to drink?

EPA testing detected 2 contaminants in the water serving Mccomb. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Mccomb?

4 public water suppliers report drinking-water monitoring for Mccomb, Mississippi to the EPA. Each is listed above with its population served.

What contaminants are in Mccomb's water?

The contaminants EPA monitoring detected in Mccomb include Lithium, Lead. The full list, with the level at the main supplier and the data source, is in the table above.

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.