Community Water System · PWSID CA1910073

Lomita-City, Water Dept.

Serves 20,256 peopleSurface Water PurchasedOwner: Local GovernmentLomita, California
Nothing open right now.

On record since 2016: 2 violations. 1 over the limit · 1 missed or late test. Most recent began 2018-07-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

1Over the limit
0Treatment lapse
1Missed or late test
0Notice or report

More violations on record than 52% of active water systems in California. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152016 · Over the limit: 12018 · Missed or late test: 120202025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
50% over the limit · 150% missed or late test · 1

Across California, 52% of violations are missed or late tests and 29% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2016-04-01 · Trihalomethanes (TTHM): measured 0.0821 MG/L vs limit 0.0800 MG/L (1.0×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 3 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2018-07-01BenzeneMonitoring, RegularBack in compliance
  2. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0821 MG/L · limit 0.0800 MG/LBack in compliance

System details

Population served20,256
Service connections4,456
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityLomita
EPA ZIP on file90717

Areas served

  • Lomita, Los Angeles County

Reading this record

Lomita-City, Water Dept. is a community water system that draws from surface water purchased and serves about 20,256 people in Lomita, California. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.