Where Ankeny's water comes from
Ankeny owns the mains, meters and towers in town, yet most of the water flowing through them arrives already treated. For years that water came from Des Moines Water Works, which draws from the Raccoon and Des Moines rivers, riverbank galleries and Maffitt Reservoir and lime-softens it at its metro plants. Ankeny is a founding member of Central Iowa Water Works, the regional utility formed to take over that supply and treatment so growing suburbs share in ownership instead of simply buying water wholesale.
The city also has wells of its own, and it has explored storing treated water underground in the Jordan aquifer during low-demand months, then recovering it during summer peaks when lawns across the new subdivisions are watered at once. For homeowners, the result is softened river water of moderate hardness, roughly 7 grains per gallon. That is easy on a heater compared with untreated Iowa groundwater, though it still leaves a fine layer of sediment in tanks over time.
River-sourced water follows the seasons. In deep winter it can reach Ankeny homes in the upper 30s or low 40s, while August supply is warm enough that a tank barely has to work. Many homeowners first notice that a heater is struggling around Thanksgiving, when inlet temperatures have dropped and houseguests are lined up for the shower.
A city built mostly since the 1990s
Ankeny's older core sits around Uptown, the original downtown, and the blocks of modest postwar homes nearby, where 1950s and 1960s ranches and split-levels put the water heater in a basement corner beside a chimney-vented furnace. A good number of those houses keep their original clay-lined chimney serving a lone water heater after the furnace was upgraded.
Most of the city is far newer. Prairie Trail, the large planned neighborhood on the southwest side near the DMACC campus, along with the subdivisions spreading east of Interstate 35 and across the north end of town, has filled in with two-story homes, townhomes and ranches with finished basements. Builders there usually installed 50-gallon power-vent or direct-vent tanks in a small mechanical room, often with only a few inches of clearance around the heater. Many of those units are now 10 to 20 years old, and the cramped rooms make swaps slower than they look.
Storms, outages and central Iowa winters
Ankeny's weather risks are the standard central Iowa set, just felt across more new construction. Summer thunderstorms bring hail, straight-line wind and the occasional tornado warning. The August 2020 derecho knocked out power across the metro for days, and every power-vent, tankless and electric heater in those homes went cold with it. A standing-pilot tank vented into a chimney, more common in older Uptown homes, keeps heating without electricity.
Winters bring subzero nights, blowing snow across open land at the edge of town and drifts against sidewall vents on the north and west faces of houses. Heavy rain can also overwhelm sump pumps in finished basements, and a few inches of water in a mechanical room is enough to soak the burner tray and gas valve.
The problems plumbers see most in Ankeny
- Original builder tanks wearing out across the neighborhoods that sprang up in Ankeny's housing rush, often so one cul-de-sac can see three failures in a single winter.
- Power-vent blower and pressure switch failures that leave a heater dead even though the tank itself is fine.
- Cramped mechanical rooms in finished basements, where drywall and shelving must come out before a tank can be removed.
- Leaks onto finished floors when no drain pan or leak sensor was installed beneath the heater.
- Snow-blocked vent terminals on the windward side of homes facing open fields at the city edge.
- Sediment noise in tanks that have never been drained since the house was built.
Typical water heater prices in Ankeny
| Job | Typical Ankeny range | Notes |
|---|---|---|
| Igniter, thermocouple or flame sensor | $150–$290 | |
| Power-vent blower or pressure switch | $275–$550 | Model-specific parts |
| Gas control valve | $350–$600 | |
| Drain pan and leak sensor added | $150–$325 | Best done at replacement |
| 50-gallon gas tank replacement | $1,400–$2,900 | Permit usually included |
| 50-gallon power-vent replacement | $2,200–$3,700 | Vent pipe often reused |
| Tankless installation | $3,100–$5,900 | Gas line review required |
Prices in Ankeny follow the Des Moines metro. Finished basements where a door frame or shelving has to come out, and power-vent models with costly blowers, push jobs higher. Simple swaps in open Uptown basements cost the least.
Iowa licensing and Ankeny permits
Iowa licenses plumbers through the Plumbing and Mechanical Systems Board at the Department of Inspections, Appeals, and Licensing, and its online search confirms a contractor's license. Inside city limits, Ankeny's own building staff permit each tank swap and inspect the finished work, including venting, gas piping and relief valve discharge.
Some addresses just outside the city fall under Polk County rather than Ankeny, so check your property's jurisdiction before scheduling. Homes in a homeowners association may also have rules about new sidewall vents on the front of a house.
Power-vent heaters in newer homes
Most Ankeny homes from the past 25 years have a power-vent tank, which uses a fan on top to push exhaust through plastic pipe out a sidewall. They let builders skip a chimney, but the fan, pressure switch and control board add electronic failure points. A power-vent heater that hums, clicks or shows a flashing code without lighting often needs a blower or switch, not a new tank, and that repair costs much less than replacement.
When the tank itself fails, replacing it with the same type keeps the existing vent pipe in use. Families wanting more hot water can move to a bigger-burner power-vent tank or go tankless, provided the gas line from the meter can supply it. MidAmerican Energy delivers Ankeny's gas and power and has backed efficient heater purchases with rebates at times.
Repair or replace in Ankeny
If a 2008 tank in Prairie Trail or a northeast subdivision starts leaking from the body, replacement is the only answer, and it is worth scheduling before the water reaches carpet and drywall. A heater younger than ten with a failed blower, igniter or valve is usually worth repairing. For homes with several heaters from the same builder, it pays to watch neighbors' experiences: when tanks on the block start failing, yours is probably close.
At replacement, add a drain pan, a leak sensor that shuts off the water, and an expansion tank if the plumber recommends one. Those small additions protect a finished basement far better than the bare installations many builders used.
Around Ankeny
Des Moines and Johnston draw on the same regional treated river water and run their own permit offices. Bondurant to the southeast and Polk City near Saylorville Lake are growing quickly with similar new construction. Alleman and Elkhart to the north are small communities with a mix of city and rural water, and farmhouses on private wells out in northern Polk County face much harder water.
Water heater questions from Ankeny
Does Ankeny treat its own water?
Mostly no. Ankeny buys treated river water through the regional Des Moines Water Works system, now part of Central Iowa Water Works, and supplements it with city wells.
Why are so many water heaters failing in my Ankeny neighborhood?
Whole streets went up in a couple of seasons with identical builder tanks, so they wear out on a similar clock.
My power-vent heater won't light. Do I need a new one?
Not necessarily. Blowers, pressure switches and igniters fail often and cost much less than a new heater.
Who issues water heater permits in Ankeny?
The City of Ankeny's building division. Properties just outside city limits may fall under Polk County.
Will my heater work during a power outage?
Power-vent, tankless and electric heaters stop when the power goes out. A chimney-vented standing-pilot tank keeps working.
How do I protect my finished basement from a leaking heater?
Add a drain pan, a leak sensor with an automatic shutoff and a clear path to the floor drain.