Hard water in Apple Valley, CA
Reported by Apple Valley Heights CWD · July 2022
- CA typical
- 121 mg/L
- EPA health violations since 2016
- 1
- Softener for 3 people
- 24k grain
- Data
- Utility report
Tap water in Apple Valley has about 205 mg/L of hardness, which is 12.0 grains per gallon. On the USGS scale that counts as very hard. The number comes from Apple Valley Heights CWD, dated July 2022. Reports for this system disagree, with values from 205 to 240 mg/L.
Apple Valley sits 84 mg/L above the typical California figure of 121. None of the 10 nearest cities we track has harder water. The range nearby runs from 36 mg/L in Running Springs to 173 in Big Bear Lake.
What 205 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 205 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 × 12.0 gpg = 2,698 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Apple Valley's water system
1 health-based violation since 2016
Serves about 983 people from groundwater.
- Health-based
- 1
- Monitoring or reporting
- 1
- Open now
- 2
| Contaminant or rule | Violations | Period | Status |
|---|---|---|---|
| Lead and Copper Rulecorrosion control and lead sampling | 1 | 2024 | 1 open |
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 Apple Valley water hard?
Yes. It measures about 205 mg/L (12.0 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Apple Valley in grains per gallon?
About 12.0 gpg. One grain per gallon equals 17.1 mg/L, so 205 mg/L divided by 17.1 gives 12.0.
What size water softener do I need in Apple Valley?
For 3 people using 75 gallons each per day, 12.0 gpg works out to about 2,698 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Apple Valley water system had EPA violations?
EPA records show 1 health-based violation for Apple Valley Heights CWD since 2016, involving Lead and Copper Rule. There were also 1 monitoring or reporting violation, which are about late or missing tests and notices.
Nearby cities
- Hesperia108 mg/LModerately hard
- Adelanto111 mg/LModerately hard
- Lucerne Valley53 mg/LSoft
- Lake Arrowhead56 mg/LSoft
- Crestline51 mg/LSoft
- Running Springs36 mg/LSoft
- Barstow80 mg/LModerately hard
- Big Bear Lake173 mg/LHard
- Muscoy72 mg/LModerately hard
- San Bernardino79 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (utility report, July 28, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.