Lake phosphorus loading form septic systems by seasonally perched groundwater
The movement of effluent phosphorus (P) from old septic systems by seasonally perched groundwater was investigated. A previous study indicated a correlation between P loadings and the presence of old homes. Water samples were taken from shallow wells installed 10 to 50 m downgradient from seven septic systems 20 to 40 years old. The equivalent volumetric fraction of each sample consisting of undiluted effluent was estimated from chloride concentration. A Monte Carlo analysis was used to account for the various sources of uncertainty. Movement of diluted septic effluent to the lake was common, but transport of more than 1% of effluent P through the soil was probable for only 4 of 26 samples. The greatest apparent P movement was associated with persistently saturated conditions.
Citation Information
Publication Year | 1983 |
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Title | Lake phosphorus loading form septic systems by seasonally perched groundwater |
Authors | R. J. Gilliom, C.R. Patmont |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Journal of the Water Pollution Control Federation |
Index ID | 70011307 |
Record Source | USGS Publications Warehouse |