Hard water in Goddard, KS
Reported by Sedgwick CO RWD 4 · May 2022
- KS typical
- 138 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 32k grain
- Data
- Utility report
Goddard water measures 268 mg/L (15.7 gpg) of hardness, very hard by USGS standards. The number comes from Sedgwick CO RWD 4, dated May 2022.
At 268 mg/L, Goddard is 130 mg/L above the typical Kansas figure of 138. None of the 10 nearest cities we track has harder water. The range nearby runs from 117 mg/L in El Dorado to 260 in Newton.
What 268 mg/L means at home
Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.
Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.
Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
At 268 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 15.7 gpg = 3,526 grains a day. A 32,000-grain unit regenerates about every 9 days.
EPA record for Goddard's water system
No health-based violations since 2016
Serves about 2,580 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 2
- Open now
- 0
Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.
Questions
Is Goddard water hard?
Yes. It measures about 268 mg/L (15.7 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Goddard in grains per gallon?
About 15.7 gpg. One grain per gallon equals 17.1 mg/L, so 268 mg/L divided by 17.1 gives 15.7.
What size water softener do I need in Goddard?
For 3 people using 75 gallons each per day, 15.7 gpg works out to about 3,526 grains a day. A 32,000-grain softener covers that with a regeneration about every 9 days.
Has the Goddard water system had EPA violations?
EPA records show no health-based violations for Sedgwick CO RWD 4 since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Wichita138 mg/LHard
- Haysville225 mg/LVery hard
- Valley Center133 mg/LHard
- Park City138 mg/LHard
- Derby133 mg/LHard
- Mulvane128 mg/LHard
- Newton260 mg/LVery hard
- Augusta120 mg/LModerately hard
- El Dorado117 mg/LModerately hard
- Winfield136 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, May 17, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.