OHA Drinking Water Services
OR41
PWS ID: 01542 ---- LAKE OSWEGO - TIGARD WATER SUPPLY
System Information     Schedule Counts
Status:  Active
System Type:  Community
Population Served:  105,000		 Active:  14
Inactive:  0
Expired:  3  Show Expired

Routine Sampling Schedules For Chemicals
Facility
ID		 Name Status Test Group Samples
Required		    Sampling
Interval		 Start End    Notes
CH-A CH FOR CLACKAMAS RIVERATOC & ALKALINITY1  Quarterly10/01/2020Open
DIST-A DISTRIBUTION SYSTEMASTAGE 2 DBP1  Yearly01/01/2020OpenSample in July
EP-A EP FOR CLACKAMAS RIVERAARSENIC1  9 Years01/01/2017Open
EP-A EP FOR CLACKAMAS RIVERABROMATE 1  Quarterly10/01/2023Open
EP-A EP FOR CLACKAMAS RIVERAIOC1  9 Years01/01/2020Open
EP-A EP FOR CLACKAMAS RIVERANITRATE1  Yearly01/01/2020Open
EP-A EP FOR CLACKAMAS RIVERANITRITE1  9 Years01/01/2020Open
EP-A EP FOR CLACKAMAS RIVERARAD - GROSS ALPHA1  9 Years01/01/2017Open
EP-A EP FOR CLACKAMAS RIVERARAD - RADIUM 226/2281  9 Years01/01/2017Open
EP-A EP FOR CLACKAMAS RIVERARAD - URANIUM1  9 Years01/01/2017Open
EP-A EP FOR CLACKAMAS RIVERASOC2  3 Years01/01/2020OpenCollect samples in 2 consecutive quarters
EP-A EP FOR CLACKAMAS RIVERAVOLATILE ORGANICS1  Yearly01/01/2020Open
SRC-AA CLACKAMAS RIVERACYANOTOXINS1  2 Weeks05/03/2020Open
WTP-A TP FOR CLACKAMAS RIVERATOTAL ORGANIC CARBON1  Quarterly10/01/2020Open

More information for this water system: SDWIS ID 5510
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