Drinking water quality · 2020
· Verified
What's in Lomita-city, Water Dept., CA tap water
22 contaminants were measured in the Lomita-city, Water Dept., CA water system's 2020 annual report. Each is shown below against its federal limit.
- Reporting year
- 2020
- Contaminants measured
- 22
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based1 violation on record · most recent Apr 2016resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 4.5 ug/LAverageMWD Surface Water | None set | Within the limit |
| Bromodichloroacetic acidA brominated haloacetic acid disinfection byproduct. | 0.6 ug/LAverageCity Of Lomita Groundwater & Distribution | None set | 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 |
| Asbestos | Not detected MFLRangeMWD Surface Water | 7 MFLMCL | None detected |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | Not detected mg/LRangeMWD Surface Water | 10 mg/LMCL | None detected |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 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. | 111 ug/LAverageMWD Surface Water | None set | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | Not detected ug/LRangeMWD Surface Water | None set | None detected |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | Not detected ug/LRangeMWD Surface Water | 0.02 ug/LPublic health goal | None detected |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.0 mg/L90th percentileAt the tap | 0.015 mg/LAction level | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 0–240 ug/LRangeMWD Surface Water | None set | 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
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LRangeMWD Surface Water | 5 pCi/LMCL | None detected |
| 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 |
| 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/LRangeMWD Surface Water | None set | None detected |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0AverageCity Of Lomita Groundwater & Distribution System | 0Public health goal | Detected — no federal limit |
+By source (2)— MWD Surface Water, City Of Lomita Groundwater & Distribution System
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Dbaa | 2.7 ug/LAverageCity Of Lomita Groundwater & Distribution | None set | Detected — no federal limit |
| Dcaa | 2.9 ug/LAverageCity Of Lomita Groundwater & Distribution | None set | Detected — no federal limit |
| Mbaa | 0.37 ug/LAverageCity Of Lomita Groundwater & Distribution | None set | Detected — no federal limit |
| Tcaa | 0.73 ug/LAverageCity Of Lomita Groundwater & Distribution | 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. | 2.27 mg/LAverageMWD Surface Water | None set | Detected — no federal limit |
People also ask about Lomita-city, Water Dept., CA's water
+Is Lomita-city, Water Dept., CA tap water safe to drink in 2020?
Every one of the 22 contaminants measured in Lomita-city, Water Dept., CA's 2020 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Lomita-city, Water Dept., CA tap water?
22 contaminants were measured in Lomita-city, Water Dept., CA's 2020 Consumer Confidence Report, spanning metals, other, and inorganic chemicals. 10 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Lomita-city, Water Dept., CA's 2020 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., 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 2020 report; a new report will replace it once the utility publishes its next annual update.