#TDIWH—January 13, 1916: Los Angeles Water Supply Purity

0113 LA Aqueduct purity 1916January 13, 1916: Municipal Journal editorial–Purity of Los Angeles Water Supply. “That the construction of the new Los Angeles aqueduct and the reservoirs forming a part of the aqueduct system of water supply for that city has been conducted and terminated in a most creditable way is the opinion of the majority of engineers who are familiar with the work. Some mistakes were made, but their number and importance were small when we consider the magnitude of the work and the unusual conditions to be met.

That the fundamental plan of the supply was wrong, and the water which had been brought more than 250 miles at such enormous cost was not fit to drink, was the startling claim made a few months ago. Few who were well informed took this at all seriously, but the matter was pressed even to the courts, and the satisfactoriness of the supply was demonstrated. Whatever may have been the real inspiration of this attack, it is fortunate for the city and for those responsible for the work that the discussion was promptly carried to a finish and, we hope, has fully satisfied all citizens except the few whom nothing could convince.”

Commentary: Given the controversy surrounding the development of the Los Angeles water supply, it is not surprising that some of the critics would attack the safety of the source. Critics were angry then and a century later many critics are still furious with the Los Angeles Department of Water and Power for developing the Owens Valley water supply.

0113 Watershed2 LA Aqueduct purity 1916January 13, 1916: Related Article in the Municipal Journal—Sanitary Features of Los Angeles Aqueduct. “Probably few cities of Europe or our own country are so favorably situated to ensure the necessary sanitary conditions and effect the delivery of a pure and potable domestic water supply without artificial treatment, as is the city of Los Angeles, Cal., in the possession of the Los Angeles aqueduct. A sparsely inhabited region as a drainage area, large reservoirs to provide storage and sterilization [sic], and the carrying of the water a long distance through concrete conduits and steel pipe lines, often under heavy pressure, with aeration by falls aggregating 1,600 feet in height-each provides a subject for interesting discussion.

Preceding articles in this journal have discussed the plans of construction of the works, so that it will be necessary here only to state that the streams flowing down the eastern face of the Sierra over a lineal distance of 120 miles are collected and carried southward across the Mojave desert and through the crest of the Coast range to the rim of the San Fernando valley, a distance of 233 miles. Here the aqueduct terminates and the city trunk line, a system complete in itself excepting for its source of supply, carries the water across the San Fernando valley, through the crest of the Santa Monica range, down their southeastern flank and into the city, a distance of 25 miles.

The principal tributary of the aqueduct is the Owens river, which has its rise in the heart of the Sierra Nevada [range] near Yosemite Park at an elevation of 11,000 feet. Within its upper drainage of 444 square miles, comprising the area of Long valley, the district is uninhabited excepting in the summer season by a few campers, and stockmen who seek the valley for its excellent pasturage.”

Reference: Municipal Journal. 1916. 40:2(January 13, 1916): 35-38, 45.

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One thought on “#TDIWH—January 13, 1916: Los Angeles Water Supply Purity

  1. Pingback: Whewell’s Gazette: Year 3, Vol. #22 | Whewell's Ghost

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