OHA Drinking Water Services
OR41 00706 RIDDLE, CITY OF Classification: COMMUNITY
Contact: ROBERT TILTON Phone: 541-874-2905 View on Map
PO BOX 143 County: DOUGLAS
RIDDLE, OR 97469 Activity Status: Active -- History
Population: 1,224 Number of Connections: 589
Operating Period: January 1 to December 31 Regulating Agency: REGION 2
Certified Operator(s) Owner Type: LOCAL GOVERNMENT
Required: Y Licensed By: N/A
Distribution class: 1 Last Survey Date:  Sep 12, 2024
Treatment class: 2
Filtration Endorsement Required: Yes Source Water Protection Status

Sources
Facility ID Facility Name Activity Status Availability Source Type
EP-A EP FOR COW CREEK A SW
SRC-AA COW CREEK A Permanent SW
Abandoned Sources
SRC-AB RUSSELL CREEKI Other SW
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Treatment
Facility ID Facility Name Filter Type Giardia Removal
Credit		 Treatment Process Treatment Objective
WTP-A TP FOR COW CREEK Conventional Filtration 2.5-logFILTRATION, RAPID SAND PARTICULATE REMOVAL
HYPOCHLORINATION, POST DISINFECTION
HYPOCHLORINATION, PRE DISINFECTION
COAGULATION PARTICULATE REMOVAL
FLOCCULATION PARTICULATE REMOVAL
RAPID MIX PARTICULATE REMOVAL
SEDIMENTATION PARTICULATE REMOVAL

Consumer Confidence Reports (Last 5 Years)
For Year Date Received Date Certified
2024 6/4/2025 6/24/2025
2023 6/4/2024 6/4/2024
2022 7/21/2023 4/25/2023
2021 6/21/2022 6/21/2022
2020 Not received 11/15/2021

Cross Connection/Backflow Prevention Information (Last 5 Years)
Enabling Authority Received Annual Summary Report Cross Connection Fee Status
Yes (pdf) 2024 - Received (pdf)
2023 - Received (pdf)
2022 - Received (pdf)
2021 - Received (pdf)
2020 - Received (pdf)
 2026 - Unpaid
2025 - Paid
2024 - Paid
2023 - Paid
2022 - Paid

More information for this water system: SDWIS ID 3988
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