Water testing in Shell Rock
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…
Well Water Testing in Shell Rock
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.
Shell Rock is a small Shell Rock River town of older homes on the Butler-Bremer line. Housing here runs to early-1900s and postwar homes with newer subdivision growth, across the river-side core and the newer edges toward Waverly.
Well water in Butler County
Butler County sits in or near northeast Iowa's carbonate-bedrock area. The Iowa Geological Survey lists Butler, Bremer, Chickasaw, Floyd, and Mitchell counties among counties with large numbers of sinkholes, and says sinkholes may occur where glacial cover over bedrock is under 50 feet thick. Iowa DNR says karst features can let surface water reach shallow groundwater immediately, and that karst wells need more frequent water quality monitoring. DNR recommends coliform bacteria and nitrate testing every year and arsenic at least once. County-specific well results were not found, so test your own well.
County facts checked October 2026 against: iowadnr.gov, iowadnr.gov, iowageologicalsurvey.uiowa.edu.
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Water tests available in Shell Rock
Bacteria
Shows whether surface water or waste is reaching the well.
- Total coliform bacteriaSurface contamination reaching the well
- E. coliFecal contamination from septic, manure or wildlife
Health chemicals
No taste, color or smell. These are the long-term health checks.
- NitrateFertilizer, septic and manure; highest risk to infants10 mg/L (EPA)
- ArsenicNatural arsenic from rock and soil10 µg/L (EPA)
- LeadLead service lines, solder and brass fixtures
- ManganeseNatural manganese; a concern for infants
- FluorideNatural fluoride; dental health4.0 mg/L (EPA)
- UraniumNatural radionuclide in groundwater30 µg/L (EPA)
Petroleum & solvents
Fuel and chemical spills from old tanks or nearby sites.
- VOCs (volatile organic compounds)Fuels, solvents, degreasers and paintsVaries by compound (EPA)
- DRO (diesel range organics)Diesel and heating-oil petroleum
Household quality
Staining, scale and taste, and choosing the right treatment.
- IronRusty staining and metallic taste
- HardnessScale buildup; sizing a water softenerNo health standard
- pHCorrosive or scaling water6.5 to 8.5, aesthetic (EPA)
- SulfateTaste and odor; diarrhea risk for infants250 mg/L, aesthetic (EPA)
Limits shown are EPA drinking water standards. Your lab report compares each result to the standards that apply.
Shell Rock private well testing timeline
| Test | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | Year 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.
Well water around Shell Rock, Butler County
How far a well must be from common hazards in Shell Rock
- 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
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 Shell Rock: what happens at the sale
- 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.
- 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.
- 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.
- 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)).
The paperwork tells you a well exists, not what is in it. Add water testing to your inspection. Get a free instant quote
Common questions.
Who needs well water testing in Iowa?
Is well water testing part of the home inspection?
Is Butler County considered a sinkhole area?
Do you cover Shell Rock?
What is the arsenic limit, and can I boil it out?
How often should a private well be tested in Iowa?
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