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Water Quality Report

Denver, IL

Rock Island County · 2,745 residents · 8 water systems

3

Contaminants detected

0

PFAS compounds

1137

Hardness (mg/L)

2

Above legal limits

4

Above health guidelines

Denver drinking water comes from a mix of groundwater and surface water sources. Based on the most recent monitoring data, 3 contaminants have been detected in the water supply, including Lead, Total Trihalomethanes, Haloacetic Acids (HAA5). Water hardness is 1137 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Denver water

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

Lead0 / 0.015 mg/L
0% of EPA limit
Total Trihalomethanes48.4 / 80 ug/L
61% of EPA limit
Haloacetic Acids (HAA5)23.8 / 60 ug/L
40% of EPA limit
Microplastics (not routinely tested)

Water systems serving Denver

BEACH MHP

624 servedSurface water3 contaminants
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HIGH CLIFF ESTATES

560 servedGroundwater1 contaminants
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BURT ESTATES MHC

543 servedGroundwater3 contaminants1 above legal limit
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IMPERIAL MHC

328 servedGroundwater2 contaminants
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THE MEADOWS

238 servedGroundwater2 contaminants1 above guideline
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COUNTRY ACRES MHP (LA SALLE COUNTY)

222 servedGroundwater6 contaminants1 above legal limit1 above guideline
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MAPLE CREST MANOR MHP

190 servedSurface water0 contaminants
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HARVEST ESTATES (FORMERLY BILLS MHP)

40 servedGroundwater13 contaminants2 above guidelines
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Other cities in Rock Island County

Water quality reports for nearby Illinois communities.

BeaufortCarbon CliffCedaredgeCoal ValleyCordovaDecaturDixonEast MolineGodfreyHamptonIllinois CityMilan

Frequently asked questions

Is Denver, IL tap water safe to drink?
Denver tap water has 2 contaminants currently measured above EPA legal standards (Maximum Contaminant Levels), and 4 above independent health guidelines. 3 contaminants have been detected in the water supply, including Lead, Total Trihalomethanes, Haloacetic Acids (HAA5). View the detailed report for each water system to see specific levels, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Denver water?
Monitoring has detected 3 contaminants in Denver's water supply: Lead, Total Trihalomethanes, Haloacetic Acids (HAA5). 2 of these are above EPA legal limits. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Denver water hard?
Yes. Denver water has a hardness of 1137 mg/L (very 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 Denver get its drinking water?
Denver'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. Denver is served by 8 water systems, the largest being BEACH MHP (serving 624 people).

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