Check the sanitation district before installing. Inland Empire agencies talk about salinity. We did not find a Riverside city ordinance that bans residential self-regenerating softeners the way LACSD does in the Santa Clarita Valley. Ask the sewer utility — Western Municipal and the city are not interchangeable.
Hardness (as published)
194 mg/L as CaCO3 (11 grains per gallon), range 180–210 mg/L on the 2024 RPU sampling table. — Riverside Public Utilities 2024 Water Sampling Data / Water Quality Report
Disinfectant (as published)
Chlorine residual 0.60 mg/L average (0.24–0.88) on the 2024 table. City FAQ: trace chlorine; carbon if you want it gone. — Riverside Public Utilities 2024 Water Quality Report; RPU Water Quality FAQ
What actually fits
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If soap will not lather and you want a salt softener
Salt-based softener: two mineral tanks and a brine tank.
Ask the agency on the sewer side of the bill before you cut a brine drain. California lets districts restrict self-regenerating units. A “banned in California” blog is not your district.
If you are shopping a PFAS listing for the kitchen
Under-sink reverse osmosis: filters, tank, and a second faucet.
A pitcher or under-sink RO whose exact model is listed for PFAS under NSF/ANSI 53 or 58. The RO shop link is Waterdrop. Pitchers stay on a tagged Amazon search. We have not picked a model.
The 2024 sampling table lists hardness 194 mg/L (11 gpg), range 180–210. Chlorine residual averages 0.60 mg/L. The city FAQ says there is a trace of chlorine and that carbon is how you take it out. That FAQ is not a chloramine sentence.
Salt discharge
Salinity management in the Santa Ana watershed is real. A published citywide ban matching Measure S is not what we found. check-district.
What to match here
Hardness + drain allowed: salt softener sized from the tap.
