Manganese is widespread in Ulster County wells.

About 2 in 10 wells tested here from 2006 to 2021 were over the EPA health advisory of 0.3 mg/L, against about 1 in 7 across New York. Half the results were under 0.046 mg/L, and the top 1 in 10 were 0.51 mg/L or more. That's a bigger share than in 39 of the 50 other New York counties with 10 or more tested wells, leaving out 1 county whose results are likely overstated.

Manganese guide

About 1 in 16 wells tested here from 2006 to 2021 were over the EPA limit of 10 µg/L, against about 1 in 28 across New York. At least half the results were too low for the lab to measure, and the top 1 in 10 were 6.3 µg/L or more. That's a bigger share than in 40 of the 49 other New York counties with 10 or more tested wells.

Arsenic guide

None of the 61 wells tested here from 2006 to 2021 were over the EPA limit of 10 mg/L, against about 1 in 35 across New York. At least half the results were too low for the lab to measure, and the top 1 in 10 were 0.64 mg/L or more. Ulster County had none, while 9 of the 51 other New York counties with 10 or more tested wells had at least one.

Nitrate guide

None of the 62 wells tested here from 2006 to 2021 were over the EPA action level of 15 µg/L, against about 1 in 40 across New York. At least half the results were too low for the lab to measure, and the top 1 in 10 were 0.31 µg/L or more. Ulster County had none, while 3 of the 51 other New York counties with 10 or more tested wells had at least one.

Lead guide

None of the 15 wells tested here from 2006 to 2018 were over 4,000 pCi/L, a level the EPA proposed, against under 1 in 50 across New York. Half the results were under 79 pCi/L, and the top 1 in 10 were 1,140 pCi/L or more. Ulster County had none, while 7 of the 45 other New York counties with 10 or more tested wells had at least one.

Radon guide

None of the 62 wells tested here from 2006 to 2021 were over the EPA limit of 30 µg/L, against under 1 in 100 across New York. Half the results were under 0.23 µg/L, and the top 1 in 10 were 1.1 µg/L or more. Ulster County had none, while 3 of the 46 other New York counties with 10 or more tested wells had at least one.

Uranium guide

None of the 62 wells tested here from 2006 to 2021 were over the EPA limit of 4 mg/L, against under 1 in 100 across New York. Half the results were under 0.1 mg/L, and the top 1 in 10 were 0.34 mg/L or more. Ulster County had none, while 2 of the 51 other New York counties with 10 or more tested wells had at least one.

3 of 15 wells tested here from 2006 to 2018 had coliform bacteria, against about 1 in 4 across New York.

Bacteria guide

1 of 15 wells tested here from 2006 to 2018 had E. coli, against about 1 in 26 across New York.

E. coli means human or animal waste is getting in, so if a test of your Ulster County well finds it, boil drinking water until the well is fixed.

Bacteria guide

About 1 in 3 wells tested here from 2006 to 2021 had enough iron to stain (0.3 mg/L), against about 4 in 10 across New York.

Iron guide