Water Heater Repair in Miamisburg, OH
Miamisburg softens its well water with reverse osmosis, cutting hardness from 22 grains per gallon to about 7.5. If your water heater is leaking, rumbling or has gone cold, call and get a plumber out.
What shapes water heater trouble in Miamisburg
Reverse osmosis softening
Miamisburg pumps from five production wells beside the Great Miami River. The plant removes iron and manganese, filters the water, softens it by reverse osmosis, re-blends it, then adds chlorine and fluoride. The 2025 report puts average hardness at 7.5 grains per gallon (128 mg/L). The city says the softening plant came online in 2018 and soft water began reaching homes in 2019.
If you still run a home softener, the city recommends adjusting it to the new hardness; a water softener dealer or plumber can help. The city is also adding new wells to supplement three aging wells built in the 1950s.
Lead and galvanized replacement
The city's water department has visually inspected water pits across town and posts the results on a map and an address list. Its replacement program removes both lead and galvanized service lines, public and private, and owners with either type get instructions by mail. The 2025 report shows lead at 2.3 ppb at the 90th percentile, with none of 21 samples over the action level. Public Works is at 937-847-6635.
1970s homes, mostly gas
The median Miamisburg home was built in 1976. About 15% are older than 1940 and about 20% date from 2000 or later. About 77% are detached houses and about 27% of households rent. Gas heats about 63% of homes and electricity about 34%.
County plumbing permits, Rumpke pickup
The city's building department regulates electrical, fuel gas piping and HVAC work, at 937-847-6532. Interior plumbing permits in Montgomery County come from Public Health - Dayton & Montgomery County, which lists $30 for a replacement installation permit.
Rumpke has collected Miamisburg trash since 2013. Call Rumpke at 800-223-3960 about setting out an old tank, or ask Public Works about other items.
Safe steps for Miamisburg homes
- Leaking? Close the cold water valve on top of the tank.
- Turn off the gas valve or the breaker for the heater.
- Gas smell? Miamisburg's gas lines belong to the former CenterPoint Energy Ohio utility, now run by National Fuel. Leave the house, then call 911 and National Fuel at 1-800-838-0933 from outside.
Where we take calls
Miamisburg, Montgomery County, ZIP codes 45342. Not sure your address is covered? Call and we'll check.
Nearby towns
Repair, replacement and emergencies

Water Heater Repair
Gas, electric and tankless repairs, from pilot lights to heating elements.
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No Hot Water
Cold shower this morning? Get the cause found and fixed fast.
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Leaking Water Heater
Water around the tank or a dripping relief valve. Act before it floods.
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Emergency Water Heater Repair
Burst tank, gas smell or water everywhere. Call right away.
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Water Heater Replacement
When repair no longer makes sense, get a new tank or tankless unit.
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Tankless Water Heater Repair
Error codes, lukewarm water and scale buildup on tankless units.
Learn moreMiamisburg water heater questions
How hard is Miamisburg water?
About 7.5 grains per gallon (128 mg/L) after reverse osmosis softening, per the 2025 report.
Should I still use a water softener in Miamisburg?
The city recommends adjusting any home softener to the lower hardness. A softener dealer or plumber can reset it.
Do I need a permit to replace a water heater in Miamisburg?
Plumbing permits come from Public Health - Dayton & Montgomery County; a replacement installation permit is $30.
Who is the gas company in Miamisburg, OH?
The city's aggregation notice names CenterPoint Energy, whose Ohio gas utility is now run by National Fuel. Call 1-800-838-0933.
Where these local facts come from
- US Census Bureau, American Community Survey 2020-2024 (via Census Reporter)
- City of Miamisburg, OH, 2025 Water Quality Report
- City of Miamisburg, OH, Water Softening Information
- City of Miamisburg, OH, Production Wells and Raw Water Main Project FAQs
- City of Miamisburg, OH, Lead Service Line Replacement
- City of Miamisburg, OH, Building, Permitting, and Inspection
- Public Health - Dayton & Montgomery County, Plumbing Inspection
- City of Miamisburg, OH, Trash and Recycling
- City of Miamisburg, OH, Miamisburg to Offer Natural Gas Aggregation Program
- National Fuel, completes acquisition of CenterPoint Energy's Ohio gas utility
- National Fuel, locations and phone numbers
Figures are the latest published by each source. Pricing and availability are set by the plumber.
No hot water in Miamisburg?
Call now for water heater repair or replacement.