Water softeners and filtration in Riverside, CA

What does Riverside Public Utilities publish about Riverside water?

Riverside Public Utilities supplies the city with groundwater from the Bunker Hill and Riverside basins.

What does 180 to 210 mg/L mean for a Riverside home?

180 to 210 mg/L is about 10.5 to 12.3 grains per gallon. The low end, 180 mg/L, is right at the 180 mg/L top of the USGS hard class; Riverside's high end, 210 mg/L, is 30 mg/L over the 180 mg/L line where the USGS very hard class starts. (USGS hardness classes)

Which systems fit Riverside water?

How does a Riverside quote work?

1. Send a request from one of the 7 Riverside ZIP codes listed below.
2. An assessment at your home, where your tap can be checked against Riverside Public Utilities's published 180 to 210 mg/L.
3. You get a written quote listing what is included.
4. Installation and service by that company.

Common questions

How hard is the water in Riverside?

Hardness reported by Riverside Public Utilities: Average 197 mg/L (12 grains per gallon), range 180-210 mg/L (Calendar year 2025).

Is Riverside water hard or soft?

Hard to very hard. The low end, 180 mg/L, is right at the 180 mg/L top of the USGS hard class; Riverside's high end, 210 mg/L, is 30 mg/L over the 180 mg/L line where the USGS very hard class starts.

How many grains per gallon is Riverside water?

In grains per gallon, as published: 12 grains per gallon (Riverside Public Utilities, hardness, Calendar year 2025).

Where does Riverside tap water come from?

Riverside water is local groundwater from the Bunker Hill and Riverside basins. Source: Riverside Public Utilities 2025 Water Quality Report.

Is Riverside water treated with chlorine or chloramine?

Riverside Public Utilities lists chlorine as its disinfectant. The 2025 report does not mention chloramine. Source: Riverside Public Utilities 2025 Water Quality Report. A softener does not remove it.

How does Riverside water compare with nearby cities?

Published hardness in Riverside spans 180 to 210 mg/L. Nearby: Los Angeles 78 to 280 mg/L; San Diego 54.4 to 285 mg/L; San Francisco 8.1 to 112 mg/L.

Do I need a water softener in Riverside?

Riverside Public Utilities publishes 180 to 210 mg/L for Riverside, which reads as hard to very hard. A test at your house shows whether your tap matches it.

Is the water the same in every Riverside home?

Riverside Public Utilities publishes one figure for its whole system (Calendar year 2025).

How much does a water softener cost in Riverside?

We publish no prices for Riverside. The installing company gives a written quote after an assessment at your home.

Who installs the system?

We have not named a local installing company for Riverside yet. We will tell you the company's name and ask you before your request is shared with anyone.

Is Riverside Home Water Systems part of the city or the water utility?

No. Riverside Home Water Systems is not affiliated with Riverside Public Utilities; it copies and links the published figures.

Is booking an assessment a purchase?

No, and a request commits you to nothing.

Which ZIP codes does this page cover?

92501, 92504, 92505, 92506, 92507, 92508, 92521

Compare published hardness in other cities on hard water by city.

Machine-readable facts: water.json. Summary for AI assistants: llms.txt.