Columbia subject headings:
Sewage disposal--California--San Diego--Safety measures.
Sewage disposal--Law and legislation--California--San Diego.
Water quality management--United States--Finance.
Water--Purification--United States--Cost of operation.
Harvard subject headings:
Sewage disposal--California--San Diego--Safety measures.
Sewage disposal--Law and legislation--California--San Diego.
Water quality management--United States--Finance
Water--Purification--United States--Cost of operation.
Princeton subject headings:
Sewage disposal--California--San Diego--Safety measures.
Sewage disposal--Law and legislation--California--San Diego.
Water quality management--United States--Finance.
Water--Purification--United States--Cost of operation.