Community Water System · PWSID CA1009111

Sce/Big Creek Powerhouse 1

Serves 104 peopleSurface WaterOwner: PrivateRosemead, California
Nothing open right now.

On record since 1993: 9 violations. 1 over the limit · 1 treatment lapse · 7 missed or late tests. Most recent began 2018-04-01.

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

1Over the limit
1Treatment lapse
7Missed or late test
0Notice or report

More violations on record than 86% 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

1993 · Missed or late test: 11995200020052007 · Missed or late test: 12008 · Missed or late test: 42008 · Missed or late test: 42008 · Missed or late test: 42008 · Missed or late test: 420102014 · Missed or late test: 12015 · Over the limit: 120152018 · Treatment lapse: 120202025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
11% over the limit · 111% treatment lapse · 178% missed or late test · 7

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×+Total Haloacetic Acids (HAA5)2015-07-01 · Total Haloacetic Acids (HAA5): measured 0.0640 MG/L vs limit 0.0600 MG/L (1.1×)
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 7 results on file · action level 15 ppb

130 ppb
20 ppb
9.1 ppb
8.6 ppb
8.1 ppb
5 ppb
0 ppb

Copper, 90th percentile 1 result on file · action level 1.3 mg/L

1.5 mg/L

Every violation on record

  1. 2018-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  2. 2015-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0640 MG/L · limit 0.0600 MG/LBack in compliance
  3. 2014-10-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  4. 2008-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  5. 2008-03-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  6. 2008-02-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  7. 2008-01-01NitrateMonitoring, RegularBack in compliance
  8. 2007-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  9. 1993-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served104
Service connections60
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityRosemead
EPA ZIP on file91770

Areas served

  • Fresno County

Reading this record

Sce/Big Creek Powerhouse 1 is a community water system that draws from surface water and serves about 104 people in Rosemead, 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.