Drinking water quality · 2021
· Verified
What's in Lomita-city, Water Dept. — Lomita, Ca, CA tap water
34 contaminants were measured in the Lomita-city, Water Dept. — Lomita, Ca, CA water system's 2021 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2021
- Contaminants measured
- 34
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Chlorine Total
- Service area
- CA
1.3× the limit
state-level CCR
At or above the federal limit
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 5 mg/LAverageMWD Surface Water | 4 mg/LMCL | At or above the limit |
+By source (2)— MWD Surface Water, City Of Lomita Groundwater & Distribution System
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 7.2 ug/LAverageMWD Surface Water | None set | Within the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 34 ug/LAverageMWD Surface Water | None set | Within the limit |
+By source (2)— City Of Lomita Groundwater & Distribution System, MWD Surface Water
| |||
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 9.6 ug/LAverageMWD Surface Water | None set | Within the limit |
+By source (2)— City Of Lomita Groundwater & Distribution System, MWD Surface Water
| |||
| Bromodichloroacetic acidA brominated haloacetic acid disinfection byproduct. | 0.6 ug/LAverageCity of Lomita Groundwater & Distribution | None set | Detected — no federal limit |
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 140 ug/LAverageMWD Surface Water | 800 ug/LNL | Detected — no federal limit |
| NDMA | Not detected ng/LAverageMWD Surface Water | 10 ng/LNL | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.4 ug/LAverageMWD Surface Water | None set | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 3.044 ug/L90th percentileAt the tap | None set | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.12 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 107 ug/LAverageMWD Surface Water | None set | Within the limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | Not detected ug/LAverageMWD Surface Water | 0.02 ug/LPublic health goal | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 119 ug/LAverageMWD Surface Water | None set | Detected — no federal limit |
| BoronA naturally occurring element from rock and soil. | 163 ug/LAverageMWD Surface Water | 1000 ug/LNL | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 1.5 ug/LAverageCity of Lomita Groundwater & Distribution | None set | Detected — no federal limit |
+By source (2)— MWD Surface Water, City of Lomita Groundwater & Distribution
| |||
| Vanadium | 6.2 ug/LAverageMWD Surface Water | 50 ug/LNL | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageMWD Surface Water | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.9 mg/LAverageMWD Surface Water | 10 mg/LMCL | Within the limit |
| Dichloroacetic acidA haloacetic acid disinfection byproduct. | 2.9 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Dibromoacetic acidA brominated haloacetic acid disinfection byproduct. | 2.7 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Bromochloroacetic acidA mixed-halogen haloacetic acid disinfection byproduct. | 2.57 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Trichloroacetic acidA haloacetic acid disinfection byproduct. | 0.73 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Chlorodibromoacetic acidA brominated haloacetic acid disinfection byproduct. | 0.6 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Monobromoacetic acidA brominated haloacetic acid disinfection byproduct. | 0.37 ug/LAverageCity of Lomita Groundwater & Distribution | 60 ug/LMCL | Within the limit |
| Asbestos | Not detected MFLAverageMWD Surface Water | 7 MFLMCL | None detected |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0AverageMWD Surface Water | 0Public health goal | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.04AverageMWD Surface Water | 0Public health goal | Detected — no federal limit |
+By source (2)— MWD Surface Water, City Of Lomita Groundwater & Distribution System
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageMWD Surface Water | 0.019 pCi/LPublic health goal | Within the limit |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageMWD Surface Water | 15 pCi/LMCL | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 3.33 pCi/LAverageMWD Surface Water | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 2 pCi/LAverageMWD Surface Water | 20 pCi/LMCL | Detected — no federal limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Benzene | Not detected ug/LAverageMWD Surface Water | None set | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected ng/LAverageMWD Surface Water | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2.1 mg/LAverageMWD Surface Water | None set | Detected — no federal limit |
Source: Lomita-city, Water Dept. — Lomita, Ca, CA's 2021 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
People also ask about Lomita-city, Water Dept. — Lomita, Ca, CA's water
+Is Lomita-city, Water Dept. — Lomita, Ca, CA tap water safe to drink in 2021?
The 2021 Consumer Confidence Report for the Lomita-city, Water Dept. — Lomita, Ca, CA water utility lists 1 contaminant at or above the federal limit: Chlorine Total. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Lomita-city, Water Dept. — Lomita, Ca, CA tap water?
34 contaminants were measured in Lomita-city, Water Dept. — Lomita, Ca, CA's 2021 Consumer Confidence Report, spanning inorganic chemicals, metals, and disinfection byproducts. 21 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Lomita-city, Water Dept. — Lomita, Ca, CA tap water?
One contaminant in Lomita-city, Water Dept. — Lomita, Ca, CA's 2021 report sits at or above the federal limit: Chlorine Total (1.3× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Lomita-city, Water Dept. — Lomita, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2021 report is Chlorine Total, at 1.3× the federal threshold. It belongs to the other family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Lomita-city, Water Dept. — Lomita, Ca, CA's 2021 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Lomita-city, Water Dept. — Lomita, Ca, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2021 report; a new report will replace it once the utility publishes its next annual update.
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