Is Poynette, WI Tap Water Safe? Quality & Contaminants

What was found in Poynette's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	5400 µg/L 54% of the EPA limit 10000 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2017 Highest in the city: 9880 µg/L — POYNETTE MOBILE ESTATES · 150 people · 2019	4/4	SYR4
Nitrate-Nitrite	9552 µg/L 96% of the EPA limit 10000 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	4/4	SYR4
Fluoride	1321 µg/L 33% of the EPA limit 4000 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Copper	296 µg/L 23% of the EPA limit 1300 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2017 Highest in the city: 296.6 µg/L — CAPITAL HILL MOBILE HOME PARK · 36 people · 2018	4/4	SYR4
Barium	20.18 µg/L 1% of the EPA limit 2000 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2017 Highest in the city: 21 µg/L — POYNETTE MOBILE ESTATES · 150 people · 2018	4/4	SYR4
TTHM	13.4925 µg/L 17% of the EPA limit 80 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Chloroform	7.66 µg/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Lead	6.12 µg/L 41% of the EPA limit 15 µg/L Highest in the city: CAPITAL HILL MOBILE HOME PARK · 36 people · 2018	3/4	SYR4
Bromodichloromethane	3.83 µg/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Gross Alpha, Excl. Radon And U	3.799 pCi/L 25% of the EPA limit 15 pCi/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2014	4/4	SYR4
Gross Beta Particle Activity	3.4625 pCi/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2014	1/4	SYR4
Combined Radium (-226 And -228)	3.181 pCi/L 64% of the EPA limit 5 pCi/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2014	4/4	SYR4
Total Haloacetic Acids (HAA5)	2.74 µg/L 4.6% of the EPA limit 60 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Dichloroacetic Acid	2.65 µg/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Dibromochloromethane	2.065 µg/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Di(2-ethylhexyl) Phthalate	1.7 µg/L 28% of the EPA limit 6 µg/L Highest in the city: POYNETTE MOBILE ESTATES · 150 people · 2018	2/4	SYR4
Bromoform	0.8500 µg/L No EPA limit set Main supplier: POYNETTE WATERWORKS · 2,520 people · 2019	1/4	SYR4
Lasso	0.5590 µg/L 28% of the EPA limit 2 µg/L Highest in the city: POYNETTE MOBILE ESTATES · 150 people · 2019	1/4	SYR4
Combined Uranium	0.4500 µg/L 1.5% of the EPA limit 30 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2012	3/4	SYR4
Atrazine	0.1100 µg/L 3.7% of the EPA limit 3 µg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2017	1/4	SYR4
Lead	0.0031 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: POYNETTE WATERWORKS · 2,520 people · 2023 Highest in the city: 0.0046 mg/L — CAPITAL HILL MOBILE HOME PARK · 36 people · 2024	4/4	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Poynette

Supplier	Population served
POYNETTE WATERWORKS	2,520
POYNETTE MOBILE ESTATES	150
INCH HEIGHTS LLC	47
CAPITAL HILL MOBILE HOME PARK	36

Frequently asked questions about Poynette tap water

Is Poynette tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Poynette. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Poynette?

4 public water suppliers report drinking-water monitoring for Poynette, Wisconsin to the EPA. Each is listed above with its population served.

What contaminants are in Poynette's water?

The contaminants EPA monitoring detected in Poynette include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.