OHA Drinking Water Services
OR41
PWS ID: 95655 ---- BIGGS SERVICE DISTRICT
LRAAs and OELs

LRAA = Locational running annual average; OEL = Operational evaluation level. Learn about OELs here.
Averages are subject to change as new data is taken into consideration.

TTHM MCL = 0.080 mg/L,  HAA5 MCL = 0.060 mg/L.  MCL exceedances are indicated with red text.

Monitoring
Period		 Last
Sample		 Sample
Point		 Location TTHM
LRAA		 TTHM
OEL		 HAA5
LRAA		 HAA5
OEL
2Q2025 May 13, 2025 2DBP-01 WWTP 0.014 0.004
2Q2025 May 13, 2025 2DBP-02 PILOT/MCDONALDS 0.013 0.003
1Q2025 Mar 28, 2025 2DBP-01 WWTP 0.014 0.004
1Q2025 Jan 08, 2025 2DBP-02 PILOT/MCDONALDS 0.014 0.003
4Q2024 Oct 16, 2024 2DBP-01 WWTP 0.017 0.005
4Q2024 Oct 16, 2024 2DBP-02 PILOT/MCDONALDS 0.016 0.002
3Q2024 Jul 31, 2024 2DBP-01 WWTP 0.021 0.005
3Q2024 Jul 31, 2024 2DBP-02 PILOT/MCDONALDS 0.019 0.004



More information for this water system: SDWIS ID 5559
System Info  ::  Report for Lenders  ::  Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Contacts & Advisories  ::  Site Visits  ::  Public Notice
Coliform Summary  ::  Coliform Results  ::  Coliform Schedules  ::  LT2  ::  GW/GWUDI Source Details  ::  Plan Review  ::  Annual Fee
Chemical Summary  ::  Chemical Results  ::  Chemical Schedules  ::  Chemical Schedule Summary  ::  Arsenic RAA  ::  Cyanotoxins  ::  PFAS
Lead & Copper  ::  DBP Sample Sites  ::  FANLs  ::  MRDL  ::  GWR 4-Log  ::  Turbidity  ::  SWTR  ::  LRAA  ::  DW Source Protection
Information for all water systems:
Water System Inventory  ::  Water System Surveys  ::  Outstanding Performers  ::  Treatment Plant Inspections  ::  Treatment  ::  Plan Reviews
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Deficiencies  ::  System Scores  ::  Exceedances  ::  Public Notices  ::  Service Lines
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Fluoride  ::  Certification List  ::  DW Source Protection
Main menu:
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home  ::  DWS Rules
Need help? Email Drinking Water Services for assistance.Staff/Partner Login