OHA Drinking Water Services
OR41
PWS ID: 91879 ---- TWIN OAKS ELEMENTARY SD 4J
System Information     Schedule Counts
Status:  Active
System Type:  Non-transient Non-community
Population Served:  170
 Active:  8
Inactive:  0
Expired:  4  Show Expired

Routine Sampling Schedules For Chemicals
Facility
ID
Name Status Test Group Samples
Required
   Sampling
Interval
Start End    Notes
DIST-A Distribution SystemALEAD & COPPER5  3 Years01/01/2026OpenCollect samples between June 1 and September 30 every third year, from cold water, drinking water faucets.
EP-A EP for WELLAARSENIC1  3 Years01/01/2002Open
EP-A EP for WELLAIOC1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP for WELLANITRATE1  Yearly01/01/2002Open
EP-A EP for WELLANITRITE1  9 Years01/01/2002OpenSchedule Reflects Monitoring Reduction Granted
EP-A EP for WELLAPFAS1  6 Months01/01/2023OpenInitial monitoring - 2 samples only
EP-A EP for WELLASOC1  3 Years01/01/2002Open
EP-A EP for WELLAVOLATILE ORGANICS1  3 Years01/01/2002Open