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Water Quality Report

Poynette, WI

Columbia County · 2,520 residents · 1 water system

14

Contaminants detected

0

PFAS compounds

288

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Poynette drinking water comes from groundwater wells. Based on the most recent monitoring data, 14 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 10 others. Water hardness is 288 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Poynette water

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

Lead0.0031 / 0.015 mg/L
20% of EPA limit
Nitrate6.2 / 10 mg/L
62% of EPA limit
Copper246 / 1300 ug/L
19% of EPA limit
Radium1.9 / 5 pCi/L
39% of EPA limit
Gross Alpha Radiation1.7 / 15 pCi/L
12% of EPA limit
Total Trihalomethanes7 / 80 ug/L
9% of EPA limit
Haloacetic Acids (HAA5)1.2 / 60 ug/L
2% of EPA limit
Atrazine0.09 / 3 ug/L
3% of EPA limit
Fluoride0.735 / 4 mg/L
18% of EPA limit
Mercury (inorganic)0.00003 / 0.002 mg/L
2% of EPA limit
Chromium (total)0.0016 / 0.1 mg/L
2% of EPA limit
Barium0.0176 / 2 mg/L
1% of EPA limit
Deethylatrazine0.062 ug/L
UnregulatedPesticide
Gross Beta2.7 / 50 pCi/L
5% of EPA limit
Microplastics (not routinely tested)

Water systems serving Poynette

POYNETTE WATERWORKS

2,520 servedGroundwater14 contaminants1 above guideline
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Other cities in Columbia County

Water quality reports for nearby Wisconsin communities.

ArlingtonCambriaColumbusFall RiverFrieslandLodiPardeevillePortageRandolphRioWisconsin DellsWyocena

Frequently asked questions

Is Poynette, WI tap water safe to drink?
Poynette tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 14 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Gross Alpha Radiation. 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 Poynette water?
Monitoring has detected 14 contaminants in Poynette's water supply: Lead, Nitrate, Copper, Radium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Fluoride, Mercury (inorganic), Chromium (total), Barium, Deethylatrazine, Gross Beta. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Poynette water hard?
Yes. Poynette water has a hardness of 288 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 Poynette get its drinking water?
Poynette's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Poynette is served by one water system: POYNETTE WATERWORKS.

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