OHA Drinking Water Services
OR41
PWS ID: 90178 ---- COE MCNARY DAM
GW/GWUDI Source Detail

Non-purchased Groundwater/GWUDI Sources:
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SRC-AA:  WELL #2
GW, Active, Permanent ---- Operating Period: Jan 1 - Dec 31
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: Yes
Construction adequate?: No - Seal Missing or Unknown   Surface water type: Stream
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 08/25/2022
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 07/01/2023 - 07/31/2024
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
1
0		1
0
0		1
0
0		1
0
0		1
0
0		12
1
0
Outcome/Determination:  Low Risk
No historic GWUDI data were found.
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SRC-AB:  WELL #3
GW, Active, Permanent ---- Operating Period Unknown
Disinfection:  RESID. MAINT. HYPOCHLORINATION
Sensitivity Analysis Data
Aquifer sensitivity: High   Surface water within 500 feet: Yes
Construction adequate?: No - Inappropriate Depth   Surface water type: Stream
E. coli sources within 2-year time-of-travel: Yes   Data last updated: 08/25/2022
Monthly Assessment Monitoring Data
Monthly Assessment Monitoring Required? Completed

Monthly Schedule (Closed): 1 sample(s) per month to be taken beginning 07/01/2023 - 07/31/2024
 JanFebMarAprMayJunJulAugSepOctNovDecTotal
# Samples
TC+
E. coli+		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		1
1
0		1
0
0		1
0
0		1
0
0		1
0
0		1
0
0		12
1
0
Outcome/Determination:  Low Risk
No historic GWUDI data were found.
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More information for this water system: SDWIS ID 2917
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