Atlantic draws Dakota-aquifer water from wells less than 90 feet deep — shallow, by Iowa standards, and shallow enough that the entire treatment plant is built around iron and manganese. Hardness is not on that list. Three samples taken on 15 January 2019 put the water at 320 to 330 mg/L, about 19 grains per gallon, and it reaches every tap that way.
| Atlantic at a glance | What the record shows |
|---|---|
| Who supplies the water | Atlantic Municipal Utilities, PWSID IA1509074, 7,252 people served (EPA SDWIS); 2024 Census city estimate 6,717 |
| Where it comes from | Dakota aquifer wells under 90 feet deep — the same Cretaceous formation Carroll taps, but far nearer the surface |
| Softened at the plant | No. EPA SDWIS lists twenty-two treatment records — caustic soda pH adjustment, hypochlorite disinfection, greensand, anthracite, gravity and pressure filtration, permanganate for iron and manganese, cascade aeration and fluoridation — with no softening objective |
| Published hardness | 320 mg/L as calcium carbonate (18.7 grains per gallon) at well EW-2 and at the plant effluent, and 330 mg/L (19.3 grains) at EW-1, all sampled 01/15/2019 (Iowa DNR Drinking Water Portal) |
The 2019 sampling captured both a raw well and the plant effluent on the same day, and both came back at 320 mg/L. That is unusually clean evidence: whatever the plant does to Atlantic's water, it does not change the hardness. The number at the wellhead is the number at your kitchen tap.
Sodium is low at 19 mg/L, which confirms the same thing from the other direction. If a municipality were running ion exchange softening, sodium would climb; Atlantic's does not, because it is not softening. So a household here is dealing with roughly 19 grains per gallon, untouched, in water that is otherwise unremarkable.
Cascade aeration, greensand filtration and permanganate are the classic combination for iron and manganese, and Atlantic runs all three plus anthracite, gravity and pressure filtration. That is a lot of filtration for a town of seven thousand, and wells under 90 feet are the reason: shallow groundwater picks up metals that deeper formations do not deliver in the same quantities.
For a homeowner this matters in one practical way. Iron that gets past a plant filter lands in softener resin, coats the bed and steadily costs a softener the capacity it was sized for — so in Atlantic a softener should be specified with the iron reading alongside the hardness one, not from hardness alone. Our note on orange staining covers what iron looks like when it does get through.
It is worth being precise about what Atlantic's published figures actually are. Three samples, all taken on 15 January 2019: well EW-1 at 330 mg/L, well EW-2 at 320, and the plant effluent at 320. That is a spread of only 10 mg/L between two wells, which is tighter than most multi-well towns manage and suggests a consistent formation across the well field.
It is also a single day, six years ago. Well fields are not static — wells get rested, rehabilitated, taken out of service and replaced, and a shallow Dakota field under 90 feet responds to seasonal recharge in a way a 2,000-foot Jordan well never does. Nothing in the record says Atlantic's water has changed since 2019, and nothing says it has not. Treating a 2019 snapshot as today's number is how systems end up sized wrong in both directions.
That is the argument for measuring rather than quoting, and it applies with more force in Atlantic than in a town drawing from a deep confined aquifer. Fifteen minutes at your kitchen sink produces a current number for the water you are actually paying for.
Every price is all-in: equipment, installation, taxes and a lifetime parts warranty.
Maintenance is $199 a year for a tank-RO home and $249 for a tankless-RO home. A diagnostic service call is $199, or $99 for a known-issue trip plus the part. Financing is 0%, with $100 off for military and first responders. Ask for the full written breakdown before you schedule, or start one from our instant quote.
Rural Cass County homes tap the same shallow Dakota water with no greensand, no permanganate and no aeration in front of it, so iron and manganese arrive along with the hardness. Our well water setup is a dual-tank system at $3,450, or $3,800 with tank RO, with UV disinfection at $700 and sediment pre-filtration at $500 when the readings call for them. On a well we fit a tank RO rather than a tankless unit, because high dissolved solids cost a tankless system its pressure.
Kind Water Co is licensed and insured, and our softeners are built from NSF/ANSI 44 certified components and our reverse osmosis systems are certified to NSF/ANSI 58. Licensed local plumbing professionals we vet, schedule and stand behind do the work. Our pricing is published and all-in, and where a town publishes no number we would rather measure yours than borrow a neighbour's.
Atlantic's published figures are from 2019, and well fields shift over six years. A reading at your own tap is current and specific to your house. We test hardness, iron and the rest at your kitchen sink and leave you the readings and a written quote before you decide anything, at no charge. Book your free in-home water test.
Carroll · Winterset · Osceola · Des Moines
The Iowa DNR sample database recorded 320 mg/L as calcium carbonate at well EW-2 and at the plant effluent, and 330 mg/L at EW-1, all sampled on 15 January 2019. That is 18.7 to 19.3 grains per gallon. Atlantic does not soften, so the wellhead figure and the tap figure are effectively the same.
No. EPA SDWIS lists twenty-two treatment records for Atlantic Municipal Utilities — caustic soda pH adjustment, hypochlorite disinfection, greensand, anthracite, gravity and pressure filtration, permanganate for iron and manganese, cascade aeration and fluoridation — with no softening objective anywhere.
Because its Dakota-aquifer wells are under 90 feet deep, and shallow groundwater picks up iron and manganese that deeper formations deliver in smaller quantities. Cascade aeration, greensand and permanganate are the standard combination for those metals, and Atlantic runs all three plus anthracite, gravity and pressure filtration.
Both draw from the Dakota aquifer and neither softens, but Carroll's wells are far deeper. Carroll tested 402 mg/L, about 23.5 grains, while Atlantic tested 320 to 330 mg/L, about 19 grains. Atlantic's sodium is 19 mg/L and Carroll's 12.7 mg/L, so both are low, confirming neither runs ion exchange.
A Kind Water Co softener is $2,500 all-in, covering equipment, installation, taxes and a lifetime parts warranty, or $2,850 with reverse osmosis. The XL build is $2,800, or $3,150 with RO. Softeners use NSF/ANSI 44 certified components and RO systems are certified to NSF/ANSI 58, with 0% financing and $100 off for military and first responders.
Every number on this page comes from a public record. Here is where to open each one yourself.
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Serving Marion, Cedar Rapids & surrounding Linn County communities
Kind Water Co is a d/b/a of Zero Cap Investments LLC · 2258 Bison St, Apt B, Marion, IA 52302
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