Community Water System · PWSID CA3610064

East Valley Water District

Serves 108,629 peopleSurface WaterOwner: Local GovernmentHighland, California
Nothing open right now.

On record since 2017: 3 violations. 3 over the limit. Most recent began 2017-01-01.

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

3Over the limit
0Treatment lapse
0Missed or late test
0Notice or report

More violations on record than 64% 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

2005201020152017 · Over the limit: 32017 · Over the limit: 32017 · Over the limit: 320202025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
100% over the limit · 3

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)2017-01-01 · Trihalomethanes (TTHM): measured 0.0840 MG/L vs limit 0.0800 MG/L (1.1×)2017-01-01 · Trihalomethanes (TTHM): measured 0.0870 MG/L vs limit 0.0800 MG/L (1.1×)2017-01-01 · Trihalomethanes (TTHM): measured 0.0920 MG/L vs limit 0.0800 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 3 results on file · action level 15 ppb

2.8 ppb
0 ppb
0 ppb

Every violation on record

  1. 2017-01-01Trihalomethanes (TTHM) ×3MCL, Averagemeasured 0.0840 MG/L · limit 0.0800 MG/LBack in compliance

System details

Population served108,629
Service connections21,770
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityHighland
EPA ZIP on file92346

Areas served

  • San Bernardino County

Reading this record

East Valley Water District is a community water system that draws from surface water and serves about 108,629 people in Highland, 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.