Los Angeles, California

Ladwp hardness changes with the source (roughly 93 mg/L at Laafp, much harder on some other sources). Chloramine in the pipes. City sewer is Lasan, not the LACSD Santa Clarita Valley ban.

California · Salt-softener legality

Cited numbers from the utility report. Length follows the printed value against a labeled scale — not a health ranking. If the report has no number, it is not on the chart.

Hardness93–107 mg/L at LAAFP
Chloraminein distribution

What to do in Los Angeles

Salt-based water softener — confirm the district first

Check the sanitation district before installing a salt system.

Two tall mineral tanks and a black brine tank of a salt-based water softener, plumbed with copper pipe in a garage. — 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.

Buy salt softener

Hard water. Confirm the sewer district before you cut a brine drain.

Amazon lists shipping and returns on that product page. We do not warehouse the equipment.

Also for the kitchen

Under-sink reverse osmosis

Cloud RO is an under-sink reverse osmosis system — NSF/ANSI 58, kitchen tap, not a whole-house tank. The primary button is a tagged Amazon under-sink RO listing. Cloud buy-direct and Waterdrop sit under that. Check the exact listing if PFAS is why you are shopping. A certifier-listed pitcher is the cheap first step.

Buy under-sink RO

Buy Cloud RO direct Shop Waterdrop reverse osmosis Shop PFAS-listed pitchers

Some links are affiliate links. If you buy through one, we may earn a commission. That does not change the match, and it is not a medical claim.

As an Amazon Associate we earn from qualifying purchases.

Other options that still fit

Salt-free conditioner
A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.
Shop salt-free conditioners
Whole-house catalytic carbon for chloramine
Catalytic carbon with a chloramine claim (NSF/ANSI 42 for chloramine). Regular chlorine carbon is the wrong box.
Shop catalytic carbon for chloramine
Test the tap first
A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.
Shop water test kits

Softener vs carbon vs under-sink RO

A sketch for Los Angeles, tied to the best match above. Not a quote.

Box	What it does	Ballpark (estimate)
Salt-based softenerBest match	Removes hardness. Needs a drain. Illegal in some sewer districts. No ban is cited. Ask the agency on the sewer bill before you cut a drain.	About $800–$2,500 for a common residential unit (equipment). Installed jobs run higher.
Whole-house carbon	Chlorine or chloramine taste — match the listing. Does not soften.	About $400–$1,800 for a typical tank-and-head kit (equipment).
Under-sink reverse osmosisBest match	Kitchen tap. Check NSF/ANSI 58 if PFAS or nitrate is why you are shopping.	About $200–$600 on Amazon search; named under-sink units vary.

These are ballpark equipment ranges, not installed quotes and not what a dealer will write on a kitchen-table sheet. Prices move. Confirm the sewer rule before you price a brine tank.

On the report

Water utility: Los Angeles Department of Water and Power (LADWP)
Hardness: Varies by source. Ladwp monitoring tables: Los Angeles Aqueduct Filtration Plant about 103 mg/L as CaCO3 (range 93–107); other published source ranges run into the mid/high 200s mg/L. Not one ZIP-wide grains number. — LADWP Drinking Water Quality Report monitoring results tables
Disinfectant: Chloramine (ammonia + chloramines listed on Ladwp monitoring tables; PHG report describes chloramination before distribution) — LADWP monitoring results tables; 2025 Drinking Water Public Health Goals Report
Sanitation district: City of Los Angeles Sanitation (LASAN) — not LACSD/SCV
Brine / salt to the sewer: Check the sanitation district before installing. City of Los Angeles sewer is Lasan. The LACSD automatic-softener prohibition we cite is the Santa Clarita Valley / Measure S file, not a citywide Los Angeles rule. We did not find a published Lasan ban comparable to Measure S. Adjacent LACSD cities are a different sewer. Ask the agency on the sewer bill.

How to get your water tested

The report on this page is for the public water system. It is not a test of the faucet in one house. Pipes inside a house can change the water.

For a test of your own tap, use a laboratory on the California State Water Resources Control Board list of certified drinking-water labs.

If your water comes from a private well, test it once a year. A city water report does not cover a private well.

Also around here

Extra context besides the utility report and the chart above — geology, an unregulated table, or a published study. Not a second set of printed tap numbers.

MicroplasticsWHO’s 2019 review examined studies that found microplastic particles in treated tap and bottled water in many places. That is a published-occurrence finding, not a number from this city’s water-quality report, and we do not invent a particles-per-liter count for the tap.Microplastics in drinking-water — World Health Organization
Hexavalent chromiumLadwp’s Public Health Goals report prints hexavalent chromium on groundwater sources. That is an extra table on their report, not a citywide tap average.Highest average 0.2 ppb in groundwater sources in 2024 on that report — not a citywide tap average.Drinking Water Public Health Goals Report 2025 — Los Angeles Department of Water and Power
PFASLadwp’s regulatory-compliance page says PFAS were detected in a few individual wells and that extracted water is blended with other wells and surface water before distribution. We do not invent a distribution number.Regulatory Compliance — Los Angeles Department of Water and Power

Questions we can answer from the report

How hard is Los Angeles tap water?

Varies by source. Ladwp monitoring tables: Los Angeles Aqueduct Filtration Plant about 103 mg/L as CaCO3 (range 93–107); other published source ranges run into the mid/high 200s mg/L. Not one ZIP-wide grains number. Source: LADWP Drinking Water Quality Report monitoring results tables.

Does Los Angeles use chlorine or chloramine?

Chloramine (ammonia + chloramines listed on Ladwp monitoring tables; PHG report describes chloramination before distribution) Source: LADWP monitoring results tables; 2025 Drinking Water Public Health Goals Report.

Is a salt-based water softener legal in Los Angeles?

Check the sanitation district — no cited ban found. City of Los Angeles sewer is Lasan. The LACSD automatic-softener prohibition we cite is the Santa Clarita Valley / Measure S file, not a citywide Los Angeles rule. We did not find a published Lasan ban comparable to Measure S. Adjacent LACSD cities are a different sewer. Ask the agency on the sewer bill. Check the sanitation district before installing a salt system. This is not a legal opinion.

What should I do about Los Angeles tap water?

Salt-based water softener — confirm the district first. 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 the job is drinking water at the kitchen, under-sink reverse osmosis is the usual path. Cloud RO is the preferred Amazon listing on this site (tag tapmatch-20). We do not claim we use it.

Sources

LADWP monitoring results tables — LADWP. Accessed 2026-08-31.

Updated August 31, 2026. Numbers here are what the utility's report or the state record printed, plus the sewer rule. No invented detections.