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Your local water, explained

Long Beach Water Quality Report

Same city. Two supply zones with very different hardness.

Long Beach Utilities reports 220 mg/L average hardness in MWD zone 114 and 76 mg/L in blended zone 325. The first is very hard; the second is moderately hard. Confirm your zone below to see a filtration and softening recommendation grounded in the right supply.

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Your water

Confirm your Long Beach supply zone.

Check your water bill for Long Beach Utilities, then confirm whether your home receives MWD zone 114 or blended zone 325. Ask the utility if your bill does not show the zone.

Both choices are Long Beach Utilities. The supply zone changes the hardness recommendation.

These are utility measurements, not a test at your tap or a current service advisory. Sources checked October 28, 2026

Showing utility report

Long Beach Utilities — MWD zone 114

2025 utility report; sampling years shown beside each result

Select this exact provider and supply system. A city, county or ZIP match alone does not confirm the water reaching your home.

Your water at a glance

See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.

Hardness

Very hard average

220mg/L as CaCO₃

zone average; range 100–300

USGS hardness classes

About 12.9 gpg, calculated from mg/L. Confirm your supply zone and current hardness before choosing treatment.

2025

View source ↗

Chloramine

Below the 4 mg/L limit

2.15mg/L

citywide highest annual average; range 0.33–2.84

MRDL: 4 mg/L

This citywide result applies to both reported zones; filtration should be selected for chloramine.

2025

View source ↗

TTHMs

Below the 80 ppb limit

35µg/L (ppb)

citywide highest locational annual average; range 28–48

MCL: 80 ppb

Value from the original 2025 PDF report. Not an individual tap measurement.

2025

View source ↗

HAA5

Below the 60 ppb limit

10.2µg/L (ppb)

citywide highest locational annual average; range 5–12

MCL: 60 ppb

2025

View source ↗

Fluoride

Below California’s 2 mg/L limit

0.69mg/L

zone average; range 0.63–0.74

California MCL: 2 mg/L

Fluoride reduction is a separate treatment goal; standard filtration is not a fluoride-removal promise.

2025

View source ↗

Lead

Below the report’s action level

<5µg/L (ppb)

citywide 90th percentile; 63 sampled taps

Report action level: 15 ppb

The report says <DLR; its footnote defines lead DLR as 5 ppb. No samples exceeded 15 ppb. Your own plumbing still matters.

2025

View source ↗

Arsenic

Below the 10 ppb limit

1.3µg/L (ppb)

zone average; range 0.9–1.8

MCL: 10 ppb

Below a legal limit does not mean absent.

2025

View source ↗

PFAS

Below reporting limits

Not detected29 tested compounds

four quarters of UCMR5 testing

Compound-specific reporting limits

The 2025 report carries forward these historical results. Nondetect does not mean zero.

2023–2024

View source ↗
View Full Water ReportOpen the measured results, dates, comparisons and original utility report.

The numbers behind your report

Selected results with the original sampling dates and measurement basis. Open the utility report for every parameter, notice and footnote.

Open the complete utility report ↗

What was measuredReported amountSample year / source dateHow to read it
Hardness220 mg/L as CaCO₃zone average; range 100–3002025View source ↗Very hard averageAbout 12.9 gpg, calculated from mg/L. Confirm your supply zone and current hardness before choosing treatment.
Chloramine2.15 mg/Lcitywide highest annual average; range 0.33–2.842025View source ↗Below the 4 mg/L limitThis citywide result applies to both reported zones; filtration should be selected for chloramine.
TTHMs35 µg/L (ppb)citywide highest locational annual average; range 28–482025View source ↗Below the 80 ppb limitValue from the original 2025 PDF report. Not an individual tap measurement.
HAA510.2 µg/L (ppb)citywide highest locational annual average; range 5–122025View source ↗Below the 60 ppb limit
Fluoride0.69 mg/Lzone average; range 0.63–0.742025View source ↗Below California’s 2 mg/L limitFluoride reduction is a separate treatment goal; standard filtration is not a fluoride-removal promise.
Lead<5 µg/L (ppb)citywide 90th percentile; 63 sampled taps2025View source ↗Below the report’s action levelThe report says <DLR; its footnote defines lead DLR as 5 ppb. No samples exceeded 15 ppb. Your own plumbing still matters.
Arsenic1.3 µg/L (ppb)zone average; range 0.9–1.82025View source ↗Below the 10 ppb limitBelow a legal limit does not mean absent.
PFASNot detected 29 tested compoundsfour quarters of UCMR5 testing2023–2024View source ↗Below reporting limitsThe 2025 report carries forward these historical results. Nondetect does not mean zero.
Total dissolved solids530 mg/Lzone average; range 300–6802025View source ↗Below the report’s 1,000 mg/L benchmarkTDS is not a stand-alone safety test.
Nitrate0.29 mg/Lzone average; range 0.12–0.452025View source ↗Below the report’s 10 mg/L limit
Copper171 µg/Lcitywide 90th percentile; 63 sampled taps2025View source ↗Below the 1,300 µg/L action levelNo sampled taps exceeded the action level.
Bromate0.6 µg/LLong Beach distribution highest annual average2025View source ↗Below the 10 µg/L limitThe report separately lists a higher value at the MWD treatment-plant outlet.
Sodium86 mg/Lzone average2025View source ↗No MCL listed in this report
Chloride93 mg/Lzone average2025View source ↗Below the report’s 500 mg/L benchmark
Sulfate170 mg/Lzone average2025View source ↗Below the report’s 500 mg/L benchmark

In drinking water, ppm ≈ mg/L, ppb ≈ µg/L and ppt ≈ ng/L. Calculated hardness in grains per US gallon (gpg) = mg/L as CaCO₃ ÷ 17.118, rounded to one decimal. ND means below the reporting limit, not zero.

MCL is an enforceable contaminant limit; MRDL is a disinfectant limit. A PHG is a health goal, not the legal limit. Lead/copper action levels use system sampling percentiles, not a safe-tap threshold. TTHM/HAA5 comparisons use locational running annual averages.

PFAS results are compound-specific. Source monitoring, entry-point samples and tap tests are different. Notification and response levels in a utility report are not maximum contaminant levels; do not infer a compliance violation from a single value. EPA PFAS benchmarks and implementation ↗

Hardness source ↗USGS hardness classification ↗

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Source water. Imported MWD water in zone 114; local groundwater and imported-water blends in zone 325. The zones have substantially different mineral content.

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More about your local water

What this means for your home

A Long Beach address does not tell you which supply-zone average applies. Ask Long Beach Utilities to confirm your zone if it is not shown on your bill. Chloramine, byproducts and lead are reported citywide, while hardness, fluoride and arsenic have separate zone values. These are utility figures, not a test at your tap.

Filter vs. softener: what each doesPlan installation with your plumber

A useful local question

Why does one Long Beach zone get a stronger softener recommendation?

The imported-water zone’s 220 mg/L average supports recommending a softener for scale control. The blended zone’s 76 mg/L average is moderately hard, so use current home hardness and your goals before choosing softening. Both zones need filtration selected for chloramine if disinfectant taste is your concern.

Sources and methodology

We keep each utility’s results separate, show the reported sample year, and distinguish averages, maxima and tap-sampling percentiles. Hardness classifications use USGS ranges. Missing data stays unknown.

Sources checked October 28, 2026

Your water → your home → your system

Turn your report into a plan for your home.

Choose the system size, keep useful existing equipment, and review your filtration goals.

Find My Water System →
Your homeFind my system →