Community Water System · PWSID CA0707589

Bella Vista Water Sys

Serves 93 peopleGroundwaterOwner: PrivateMoraga, California
Nothing open right now.

On record since 1983: 19 violations. 13 over the limit · 1 treatment lapse · 3 missed or late tests · 2 notices or reports. Most recent began 2024-10-17.

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

13Over the limit
1Treatment lapse
3Missed or late test
2Notice or report

More violations on record than 93% 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

1983 · Missed or late test: 11983 · Notice or report: 1198519901993 · Missed or late test: 1199520002005201020152020 · Over the limit: 120202021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Missed or late test: 12023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42024 · Treatment lapse: 12024 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
68% over the limit · 135% treatment lapse · 116% missed or late test · 311% notice or report · 2

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×+Arsenic2023-10-01 · Arsenic: measured 0.0150 MG/L vs limit 0.0100 MG/L (1.5×)2023-07-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2023-04-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2023-01-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2022-10-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2022-07-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2022-04-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2022-01-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2021-10-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2021-07-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2021-04-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2021-01-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2020-10-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)
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 2 results on file · action level 15 ppb

13 ppb
6.5 ppb

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTSystem inactive
  2. 2024-10-17Lead service line inventoryTTSystem inactive
  3. 2023-10-01ArsenicMCL, Averagemeasured 0.0150 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  4. 2023-07-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  5. 2023-04-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  6. 2023-01-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  7. 2022-10-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  8. 2022-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RSystem inactive
  9. 2022-07-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  10. 2022-04-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  11. 2022-01-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  12. 2021-10-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  13. 2021-07-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  14. 2021-04-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  15. 2021-01-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  16. 2020-10-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  17. 1993-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  18. 1983-08-01Unknown contaminantNotification, PublicSystem inactive
  19. 1983-08-01Coliform (Pre-TCR)Monitoring, RegularSystem inactive

System details

Population served93
Service connections33
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityMoraga
EPA ZIP on file94556

Areas served

  • Contra Costa County

Reading this record

Bella Vista Water Sys is a community water system that draws from groundwater and serves about 93 people in Moraga, 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.