This system was not included in federal PFAS monitoring
FYI▾
Should I be concerned?
This system serves fewer than 3,300 people and was not required to participate in EPA UCMR5 testing. Absence of data is not the same as absence of contamination.
A naturally occurring element found in rock and soil. Gets into drinking water through erosion of natural deposits or runoff from industrial and agricultural sources.
Why it matters
Long-term exposure is linked to increased risk of skin, bladder, and lung cancer. There is no safe level for arsenic — the MCL of 10 µg/L balances health protection with treatment feasibility.
What to do
If your water is near or above the limit, a reverse osmosis filter certified to NSF/ANSI 58 removes over 90% of arsenic. Point-of-use filters at the kitchen tap are effective and affordable.
What the research says
Multiple peer-reviewed studies have found congenital heart defects including atrial septal defects at concentrations as low as 0.0005 mg/L — 20x below the US federal limit.
The combined measurement of radium-226 and radium-228 — naturally occurring radioactive elements found in some groundwater, especially in the Midwest and Great Plains.
Why it matters
Long-term exposure above the MCL of 5 pCi/L increases cancer risk, particularly bone cancer. Radium is most common in deep groundwater wells.
What to do
Ion exchange water softeners can reduce radium. Reverse osmosis is also effective. If your system uses groundwater and radium is detected, a point-of-use filter adds a layer of protection.
Nitrate (as N)▸
6.9 mg/L
MCLlegally enforceable
What is it?
Comes from fertilizer runoff, septic systems, and erosion of natural deposits. One of the most common groundwater contaminants in agricultural areas.
Why it matters
Nitrate above 10 mg/L can cause "blue baby syndrome" (methemoglobinemia) in infants under 6 months — it interferes with blood's ability to carry oxygen. Adults can tolerate higher levels.
What to do
If you have an infant on formula and your water is above 5 mg/L, consider using bottled water for formula preparation. Boiling water does NOT remove nitrate — it concentrates it.
What the research says
Multiple peer-reviewed studies have found neural tube defects, preterm birth, and low birth weight at concentrations as low as 5 mg/L — 2x below the US federal limit.
Also called PCE or "perc" — the primary solvent used in dry cleaning. Found in groundwater near dry cleaners, industrial sites, and landfills.
Why it matters
PCE is a likely human carcinogen. The MCL of 0.005 mg/L (5 µg/L) is set at the detection limit. Any detection is significant.
What to do
Activated carbon filters are effective at removing PCE.
TCE▸
0.00005 mg/L
MCLlegally enforceable
What is it?
An industrial solvent used in metal degreasing. One of the most common groundwater contaminants near industrial sites, military bases, and dry cleaners.
Why it matters
TCE is a known human carcinogen. The MCL of 0.005 mg/L (5 µg/L) is set at the detection limit. Any detection is significant.
What to do
Activated carbon filters (including quality pitcher filters) are effective at removing TCE. If detected in your water, a filter is strongly recommended.
Disinfection byproducts
HAA5▸
1 µg/L
MCLlegally enforceable
What is it?
Another group of disinfection byproducts formed when chlorine reacts with natural organic matter. HAA5 measures the five most common species.
Why it matters
Long-term exposure above the MCL of 60 µg/L (0.060 mg/L) is associated with increased cancer risk. Like THMs, the MCL is based on a running annual average.
What to do
Activated carbon filters can reduce HAA5. If your system consistently approaches the limit, a reverse osmosis filter provides more complete removal.
TTHM▸
2.9 µg/L
MCLlegally enforceable
What is it?
Formed when chlorine used to disinfect water reacts with natural organic matter. Includes chloroform, bromoform, and related compounds. The trade-off: disinfection prevents waterborne disease, but creates these byproducts.
Why it matters
Long-term exposure above the MCL of 80 µg/L (0.080 mg/L) is associated with increased cancer risk and possible reproductive effects. The MCL is based on a running annual average, not a single sample.
What to do
If your system is near or above the limit, an activated carbon filter (including pitcher filters like Brita) can reduce THMs. Running water for a minute before drinking also helps, as THMs are volatile and dissipate.
Source: GOODHUE Consumer Confidence Report 2022 · Extracted by WaterScore
Measured data
Private Well Risk
Do you have or use a private well? Measured concentrations from nearby private wells sampled within 5 miles.
Details ↓
2 wells
Water Sources
Goodhue pumps water from two groundwater wells drawing from local groundwater. Emergency backup sources are available if primary supplies are disrupted.