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Water Quality Report

Decatur, IL

85,795 residents · 4 water systems

0

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Decatur drinking water comes from a mix of groundwater and surface water sources. Based on the most recent monitoring data, 0 contaminants have been detected in the water supply. PFAS testing has been conducted with no detections.

Limited monitoring data available

The water systems serving Decatur are small private systems (population served: 85,795) and are not part of Illinois EPA's main contaminant monitoring program. No detected contaminant data is available for these systems.

If you're researching the main municipal utility serving Decatur, search for your specific address below — the search returns the actual water system serving your residence, which may be different from what's listed here.

Water systems serving Decatur

DECATUR

76,122 servedSurface water0 contaminants1 above guideline
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LONG CREEK TOWNSHIP PWS

7,850 servedGroundwater0 contaminants1 above guideline
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HARRISTOWN

1,320 servedGroundwater0 contaminants
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MISSISSIPPI MANUFACTURED HOME COMMUNITY

503 servedSurface water0 contaminants
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Frequently asked questions

Is Decatur, IL tap water safe to drink?
Decatur tap water meets EPA legal standards (Maximum Contaminant Levels). However, 2 contaminants are present above independent health guidelines, which are often stricter than legal limits. 0 contaminants have been detected in the water supply, including . View the detailed report for each water system to see specific levels and how they compare to both legal limits and health guidelines.
What contaminants are in Decatur water?
Monitoring has detected 0 contaminants in Decatur's water supply: . 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Decatur water have PFAS?
Decatur's water has been tested for PFAS compounds with no detections. Testing was conducted as part of the EPA's Unregulated Contaminant Monitoring Rule (UCMR5) program.
Where does Decatur get its drinking water?
Decatur's drinking water comes from a combination of groundwater and surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Decatur is served by 4 water systems, the largest being DECATUR (serving 76,122 people).

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