How hard is the water in San Diego Country Estates, CA?

Tap water hardness
85mg/L
5.0gpg
Moderately hard

Reported by Ramona Municipal WD · February 2025

CA typical
121 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

Tap water in San Diego Country Estates has about 85 mg/L of hardness, which is 5.0 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Ramona Municipal WD, dated February 2025.

San Diego Country Estates on the hardness scale, with nearby cities
060120180240300360+CA typical 121Ramona: 85 mg/LRamona 85Winter Gardens: 150 mg/LWinter Gardens 150Santee: 160 mg/LSantee 160Lakeside: 164 mg/LLakeside 164Bostonia: 165 mg/LBostonia 165El Cajon: 165 mg/LEl Cajon 165Escondido: 171 mg/LEscondido 171Eucalyptus Hills: 194 mg/LEucalyptus Hills 194Poway: 194 mg/LPoway 194Alpine: 209 mg/LAlpine 209San Diego Country Estates 85mg/L as calcium carbonate060120180240300360+CA 121Ramona: 85 mg/LRamona 85Winter Gardens: 150 mg/LWinter Gar. 150Lakeside: 164 mg/LLakeside 164Eucalyptus Hills: 194 mg/LEucalyptus. 194Poway: 194 mg/LPoway 194Alpine: 209 mg/LAlpine 20985 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

San Diego Country Estates sits 36 mg/L below the typical California figure of 121. None of the 10 nearest cities we track has softer water. The range nearby runs from 85 mg/L in Ramona to 209 in Alpine.

What 85 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for San Diego Country Estates

3 people × 75 gallons a day × 5.0 gpg = 1,116 grains a day. A 24,000-grain unit regenerates about every 21 days.

Size it for your household

EPA record for San Diego Country Estates's water system

Ramona Municipal WD · PWSID CA3710019

No health-based violations since 2016

Serves about 36,455 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties San Diego Country Estates to this system. EPA's service-area records do not name San Diego Country Estates, so check the utility printed on your water bill.

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 San Diego Country Estates water hard?

Somewhat. It measures about 85 mg/L (5.0 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in San Diego Country Estates in grains per gallon?

About 5.0 gpg. One grain per gallon equals 17.1 mg/L, so 85 mg/L divided by 17.1 gives 5.0.

What size water softener do I need in San Diego Country Estates?

For 3 people using 75 gallons each per day, 5.0 gpg works out to about 1,116 grains a day. A 24,000-grain softener covers that with a regeneration about every 21 days.

Has the San Diego Country Estates water system had EPA violations?

EPA records show no health-based violations for Ramona Municipal WD since 2016.

Nearby cities

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, February 5, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.