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Well Water Testing · Benton, IA

Water testing in Benton

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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Benton · Ringgold County

Well Water Testing in Benton

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.

Benton is a very small Ringgold County town founded as a Chicago Great Western Railroad station in the 1880s, once known as the post office Bloomington. Housing here runs to houses from the railroad boom of the late 1880s and 1890s through the early 1900s, a stock built toward the town's 1920 peak of 246 residents, and a few later homes, across the compact townsite along Main Street, which follows the line between Rice and Benton Townships, and the farm ground and acreages around it.

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

Well water in Ringgold County

A 2009 Senate press release says Southern Iowa Rural Water Association was funded for a water tower and booster station serving customers in Taylor and Ringgold Counties, so some rural homes may be on a rural water system rather than a private well; confirm with the association. For homes on private wells, Iowa DNR recommends annual bacteria and nitrate tests and at least one arsenic test.

County facts checked October 2026 against: iowadnr.gov, iowadnr.gov, igs.iihr.uiowa.edu, grassley.senate.gov.

Home inspection in Benton →  ·  Water testing in Iowa, explained →

Pairs well with:

Radon testing in BentonSewer scope in Benton

Water tests available in Benton

Bacteria

Shows whether surface water or waste is reaching the well.

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. Compare your lab results with these values.

Benton 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

When to test your water

  • Every yearColiform bacteria and nitrate, the basic safety checks for a private well.
  • At least onceArsenic and manganese. Iowa DNR's testing list repeats arsenic every 3 years.
  • Before a baby drinks the waterNitrate. Water above 10 mg/L as nitrogen should not be used for infant formula or juice.
  • When you buy a homeA full baseline while you can still ask questions or negotiate.
  • New well or well workWhen a well is new and after service on the well or pump.
  • After a flood or power outageIf flood water was near or reached the well, or an outage dropped the water pressure.
  • When taste, color or smell changesA change in the water is a reason to test.
  • Near a fuel tankVOCs, plus DRO for diesel and fuel oil. Iowa DNR names gasoline among the VOCs some wells are susceptible to, and Iowa's well rules list 100 feet between a well and a liquid fuel storage tank other than propane.
  • City water in an older homeLead. Iowa DNR says homes built before 1986 are more likely to have lead pipes, fixtures and solder.

Based on: Iowa DNR private wells, Iowa DNR testing frequency, Iowa DNR why test, Iowa DNR floods, State Hygienic Laboratory, 567 IAC 49.

How to get it done

  1. Choose your testsPick the water testing you need in the free instant quote.
  2. Pick a timeBook online. The quote takes about 30 seconds.
  3. Get certified lab resultsA certified laboratory analyzes the water and reports each result.

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Wells and water around Benton

Well cap in the lawn of an Iowa acreage ranch home, summer
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Iowa farmhouse among cornfields, summer
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How far a well must be from common hazards in Benton

  • 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 Benton: 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.
My home is on city water in Iowa. Is water testing still worth it?
Often, yes. Lead in drinking water comes mainly from service lines and home plumbing. Iowa DNR says a water system cannot control the materials used in home plumbing. Your utility sends a Consumer Confidence Report each year. Under the federal Lead and Copper Rule, utilities sample selected homes, those more likely to have lead plumbing. Iowa community water systems had to prepare a lead service line inventory under the federal rule, and it must be publicly available. DNR expects homes built after 1988 to have service lines made of something other than lead. To learn what your service line is made of, ask your water utility. DNR also notes that utilities are not required to offer lead testing on request. EPA says testing is the only sure way to know whether harmful amounts of lead are in your water.
Do Ringgold County rural homes use private wells or rural water?
Both may exist. A 2009 press release says Southern Iowa Rural Water Association received funding for a tower and booster station serving customers in Taylor and Ringgold Counties. The association can say whether it serves a given address. If you do have a private well, Iowa DNR recommends yearly bacteria and nitrate testing.
Benton had about 22 businesses at its peak and now is very small. How should I think about vacant lots and old commercial buildings?
A town that shrank this much often has houses next to empty lots and former storefronts, so what shares the property line deserves a careful look. How neighboring grade and old foundations shed water toward the house, whether an outbuilding or old garage has settled or lost its roof, and the condition of any older commercial structure converted to a home are worth noting. Inside we review foundation, framing, wiring and plumbing for age. Wells and septic systems are common here, and Iowa Code 455B.172 requires an inspection of a private septic system before transfer. Ringgold County is EPA Radon Zone 1, so a radon test is a good add-on.
What is the Iowa Groundwater Hazard Statement?
Under Iowa Code 558.69, a groundwater hazard statement must be submitted with the declaration of value when property is conveyed, if any listed condition exists. It covers known private burial sites, wells and their status under section 455B.190, hazardous solid waste disposal sites, underground storage tanks, hazardous waste, and private sewage disposal systems. A seller or agent signs it, and the buyer must be given a copy. A well disclosed on the statement is a reason to have the water tested before closing.
What is the arsenic limit, and can I boil it out?
The Iowa and U.S. EPA health standard for arsenic in drinking water is 0.010 mg/L, or 10 parts per billion. Boiling does not remove arsenic. The State Hygienic Laboratory lists distillation, reverse osmosis, activated alumina and anionic resin as treatments, and suggests testing arsenic speciation to choose the most effective option. If a test is elevated, DNR says you may need to test more often. A buyer who tests the well before closing knows whether arsenic treatment is a consideration for the property.
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