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Water Quality Report

Centralia, IL

Marion County · 28,397 residents · 12 water systems

12

Contaminants detected

7

PFAS compounds

160

Hardness (mg/L)

0

Above legal limits

5

Above health guidelines

Centralia drinking water comes from surface water. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Total Trihalomethanes, Haloacetic Acids (HAA5), and 8 others. PFAS compounds have been detected at trace levels in Centralia water. Water hardness is 160 mg/L (hard), which is within a typical range for the region.

Contaminants detected in Centralia water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.0033 / 0.015 mg/L
22% of EPA limit
Nitrate0.89 / 10 mg/L
9% of EPA limit
Total Trihalomethanes43.8 / 80 ug/L
55% of EPA limit
Haloacetic Acids (HAA5)23.1 / 60 ug/L
39% of EPA limit
Atrazine2.3 / 3 ug/L
77% of EPA limit
PFHpA (Perfluoroheptanoic Acid)0.4 ng/L
UnregulatedPFAS
Simazine0.085 / 4 ug/L
2% of EPA limit
PFPeA (Perfluoropentanoic Acid)0.5 ng/L
UnregulatedPFAS
Barium0.057 / 2 mg/L
3% of EPA limit
Fluoride0.602 / 4 mg/L
15% of EPA limit
Toc7.1 mg/L
Unregulated
PFBA (Perfluorobutanoic Acid)1.6 ng/L
UnregulatedPFAS
PFAS (7 compounds detected)
Microplastics (not routinely tested)

Water systems serving Centralia

CENTRALIA

12,182 servedSurface water12 contaminants2 above guidelines
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RACCOON WATER COMPANY

7,080 servedSurface water4 contaminants1 above guideline
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CLINTON COUNTY EAST PWD

1,950 servedSurface water3 contaminants
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CENTRALIA CORRECTIONAL SITE

1,397 servedSurface water0 contaminants
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WALNUT HILL

1,180 servedSurface water2 contaminants
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IRVINGTON

1,081 servedSurface water3 contaminants
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WAMAC

1,030 servedSurface water6 contaminants2 above guidelines
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HOYLETON RWC

1,020 servedSurface water2 contaminants
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HOYLETON

658 servedSurface water2 contaminants
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JUNCTION CITY

494 servedSurface water2 contaminants
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W G MURRAY DEVELOPMENT CENTER

290 servedSurface water2 contaminants
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HOYLETON-NEW MINDEN

35 servedSurface water2 contaminants
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Other cities in Marion County

Water quality reports for nearby Illinois communities.

AlmaIukaKinmundyOdinPatokaSalemSandoval

Frequently asked questions

Is Centralia, IL tap water safe to drink?
Centralia tap water meets EPA legal standards (Maximum Contaminant Levels). However, 5 contaminants are present above independent health guidelines, which are often stricter than legal limits. 12 contaminants have been detected in the water supply, including Lead, Nitrate, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine. 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 Centralia water?
Monitoring has detected 12 contaminants in Centralia's water supply: Lead, Nitrate, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, PFHpA (Perfluoroheptanoic Acid), Simazine, PFPeA (Perfluoropentanoic Acid), Barium, Fluoride, Toc, PFBA (Perfluorobutanoic Acid). Additionally, 7 PFAS compounds have been detected at trace levels. 5 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Centralia water have PFAS?
Yes. 7 PFAS compounds have been detected in Centralia's water supply at trace levels. PFAS are sometimes called "forever chemicals" because they do not break down in the environment. The EPA has set Maximum Contaminant Levels for several PFAS compounds. View the detailed report for specific concentrations.
Is Centralia water hard?
Yes. Centralia water has a hardness of 160 mg/L (hard). Hard water is not a health concern but can cause scale buildup in water heaters and appliances, reduce soap effectiveness, and leave mineral deposits. Water softeners or conditioning systems can address hardness.
Where does Centralia get its drinking water?
Centralia's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Centralia is served by 12 water systems, the largest being CENTRALIA (serving 12,182 people).

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