Vineyard, CA water hardness

Tap water hardness
53mg/L
3.1gpg
SoftReports range 18–68

Reported by SCWA - Laguna/Vineyard · September 2025

CA typical
121 mg/L
EPA health violations since 2016
1
Data
Utility report

The water in Vineyard carries roughly 53 mg/L of dissolved calcium and magnesium, or 3.1 grains per gallon. That is soft water. The number comes from SCWA - Laguna/Vineyard, dated September 2025. Reports for this system disagree, with values from 18 to 68 mg/L.

Vineyard on the hardness scale, with nearby cities
060120180240300360+CA typical 121Lemon Hill: 25 mg/LLemon Hill 25Fruitridge Pocket: 25 mg/LFruitridge Pocket 25Rancho Cordova: 28 mg/LRancho Cordova 28Rosemont: 38 mg/LRosemont 38Sacramento: 45 mg/LSacramento 45Elk Grove: 50 mg/LElk Grove 50Florin: 66 mg/LFlorin 66Parkway: 66 mg/LParkway 66La Riviera: 85 mg/LLa Riviera 85Arden-Arcade: 98 mg/LArden-Arcade 98Vineyard 53mg/L as calcium carbonate060120180240300360+CA 121Lemon Hill: 25 mg/LLemon Hill 25Rosemont: 38 mg/LRosemont 38Elk Grove: 50 mg/LElk Grove 50Florin: 66 mg/LFlorin 66Parkway: 66 mg/LParkway 66La Riviera: 85 mg/LLa Riviera 8553 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Vineyard sits 68 mg/L below the typical California figure of 121. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 25 mg/L in Lemon Hill to 98 in Arden-Arcade.

What 53 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 53 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Vineyard's water system

SCWA - Laguna/Vineyard · PWSID CA3410029

1 health-based violation since 2016

Serves about 188,417 people from surface water.

Health-based
1
Monitoring or reporting
1
Open now
2

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

20162017201820192020202120222023202420252026Lead and Copper Rule'16'18'20'22'24'26Lead and Copper Rule
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Lead and Copper Rulecorrosion control and lead sampling120241 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 Vineyard water hard?

No. It measures about 53 mg/L (3.1 grains per gallon), which the USGS classes as soft.

What is the water hardness in Vineyard in grains per gallon?

About 3.1 gpg. One grain per gallon equals 17.1 mg/L, so 53 mg/L divided by 17.1 gives 3.1.

Has the Vineyard water system had EPA violations?

EPA records show 1 health-based violation for SCWA - Laguna/Vineyard 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

All 515 cities in California

Hardness data: TapWaterData US Water Hardness (utility report, September 8, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.