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Well Water Testing · Lacona, IA

Water testing in Lacona

Water testing for Iowa homes, above all those on a private well. An accredited laboratory can test the water for coliform bacteria and E. coli…

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Lacona · Warren County

Well Water Testing in Lacona

Water testing for Iowa homes, above all those on a private well. An accredited laboratory can test the water for coliform bacteria and E. coli, nitrate, arsenic and more. Iowa DNR recommends testing a private well at least once a year.

Lacona is an 1856 Warren County town of older frame homes on rolling ground. Housing here runs to older frame homes tracing to the 1856 plat and the 1881 incorporation, across the original town blocks and the rolling Warren County farm ground around them.

Lacona homes are inspected by a local partner in our Iowa network.  ·  Call or text (563) 517-7815

Well water in Warren County

Iowa DNR says private wells should be tested for coliform bacteria and nitrate every year and for arsenic at least once. Free basic testing is offered through the Grants to Counties Well Testing Program, so ask the Warren County health department. We found no published county-level well-quality numbers for Warren. Statewide, the Iowa Geological Survey says deeper bedrock aquifers carry poorer natural water quality because the water has touched minerals longer, so a well's depth and aquifer matter as much as its location.

County facts checked October 2026 against: iowadnr.gov, iowadnr.gov, igs.iihr.uiowa.edu, naturalresources.extension.iastate.edu.

Water testing in Lacona: what matters

Lacona, IA water testing: uV water disinfection unit on the water line in a Iowa utility closet
Nitrate: EPA limit 10 mg/L, highest risk to infants →
Glass carafe of water in morning light in a 1960s Iowa kitchen (Warren County, Iowa)
Arsenic: Iowa DNR says test at least once →

See all Lacona inspections →  ·  Water testing in Iowa, explained →

Water tests available in Lacona

Bacteria

Shows whether surface water or waste is reaching the well.

  • Total coliform bacteria
    Surface contamination reaching the well
  • E. coli
    Fecal contamination from septic, manure or wildlife

Health chemicals

No taste, color or smell. These are the long-term health checks.

  • Nitrate
    Fertilizer, septic and manure; highest risk to infants
    10 mg/L (EPA)
  • Arsenic
    Natural arsenic from rock and soil
    10 µg/L (EPA)
  • Lead
    Lead service lines, solder and brass fixtures
  • Manganese
    Natural manganese; a concern for infants
  • Fluoride
    Natural fluoride; dental health
    4.0 mg/L (EPA)
  • Uranium
    Natural radionuclide in groundwater
    30 µg/L (EPA)

Petroleum & solvents

Fuel and chemical spills from old tanks or nearby sites.

  • VOCs (volatile organic compounds)
    Fuels, solvents, degreasers and paints
    Varies by compound (EPA)
  • DRO (diesel range organics)
    Diesel and heating-oil petroleum

Household quality

Staining, scale and taste, and choosing the right treatment.

  • Iron
    Rusty staining and metallic taste
  • Hardness
    Scale buildup; sizing a water softener
    No health standard
  • pH
    Corrosive or scaling water
    6.5 to 8.5, aesthetic (EPA)
  • Sulfate
    Taste and odor; diarrhea risk for infants
    250 mg/L, aesthetic (EPA)

Limits shown are EPA drinking water standards. Your lab report compares each result to the standards that apply.

Lacona private well testing timeline

Iowa DNR recommends testing a private well at least once a year. Its testing guidance lists coliform bacteria and nitrate every year and arsenic every 3 years, with at least one arsenic test for every well. Source: Iowa DNR
TestYear 1Year 2Year 3Year 4Year 5Year 6
Coliform bacteria
Nitrate
Arsenic

Test again any time after flooding, after work on the well, or when the water's taste, color or smell changes, and always when you buy a home with a well.

How far a well must be from common hazards in Lacona

  • Property line4 ft
  • Building sewer line10 ft
  • LP gas tank15 ft
  • Roadside ditch15 ft
  • Stream, pond, lake or wetland25 ft
  • Septic tank50 ft
  • Septic absorption field100 ft
  • Fuel oil or gasoline tank100 ft
  • Fertilizer or chemical storage150 ft
Source: Iowa Administrative Code 567, chapter 49

Septic, feedlot or fuel tank near the well? A coliform and nitrate test shows whether it is reaching the water. Get a free instant quote

Buying a home with a well in Lacona: what happens at the sale

  1. Groundwater Hazard StatementIowa Code 558.69 requires a groundwater hazard statement filed with the declaration of value when a listed condition (including any known well and its status under 455B.190, or a private sewage disposal system) exists on the property, signed by a seller or agent, with a copy given to the buyer.
  2. Wells on the propertyIf known wells are on the property, the statement must give the approximate location of each and its status under Iowa Code 455B.190 (abandoned wells properly plugged); the owner is responsible for the accuracy of the information.
  3. Septic time-of-transfer inspectionIowa Code 455B.172(11) requires a private sewage disposal system serving a building to be inspected before any transfer of ownership, by a DNR-certified inspector, and the county recorder will not record the deed without the report or a binding acknowledgment.
  4. Failing systemsA system that is failing to treat wastewater must be renovated to current standards by the seller or, by agreement and within a reasonable time set by the county board of health or DNR, by the buyer (455B.172(11)(c)).
Source: Iowa Code and Iowa DNR

The paperwork tells you a well exists, not what is in it. Add water testing to your inspection. Get a free instant quote

Questions

Common questions.

Who needs well water testing in Iowa?
Any home on a private well, and above all one you are buying. Iowa DNR recommends testing a private well at least once a year, and also when a well is new, after work on the well or pump, and when the water changes in look, smell or taste.
Is well water testing part of the home inspection?
It is an add-on. Add it to your home inspection quote. Testing early in your inspection window leaves time to act on the results.
Where can a Warren County well owner get free water testing?
The Iowa DNR says free basic testing comes through the Grants to Counties Well Testing Program and tells owners to contact their local county health department. We did not find a Warren County page confirming current details, so call that office before relying on it. DNR's annual guidance covers bacteria and nitrate, with arsenic at least once.
Why do sloping Lacona lots get extra attention?
Because the slopes here are not uniform. The Southern Iowa Drift Plain carries stepped erosion surfaces — broad steps notched into hillsides — so ground that looks like one smooth grade actually changes pitch partway down, and water that drains well at the top of a lot can pond against a foundation lower down. On sloping Lacona properties, the full lot matters rather than just the perimeter: where roof and surface water collects, retaining walls and walkout corners, and the basement staining that tells you what has happened before.
How often should a private well be tested in Iowa?
Iowa DNR recommends every private well used for drinking be tested at least once a year. Coliform bacteria and nitrate are annual tests. Also test when a well is new, after the well, pump or water system is serviced, after a power outage that drops water pressure, and when the water changes in appearance, smell or taste. Arsenic is listed every 3 years on the DNR page, and at least once for every well. Annual coliform and nitrate results show whether a well has changed since the last sample, which is the point of testing when buying a home.
Is there arsenic in Iowa well water?
Arsenic occurs naturally in Iowa rocks and soil, and DNR says it is present at some level in groundwater in many areas of the state. A 2006-2008 University of Iowa survey for DNR found detectable arsenic in 48 percent of 475 sampled rural wells, and 8 percent were at or above 0.01 mg/L (10 ppb). High arsenic was most common in north-central Iowa. Only a lab test shows your well's level. Arsenic cannot be seen, tasted or smelled, so a lab test during a home purchase is how a buyer learns the level in that well.
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