PUB00055

• Year: 1961
• Title: Public Water Supplies of Colorado
• CWCB Section: Interstate & Federal
• Author: Gregg, Meyer, Targy, Moulder
• Description: Summary of statistical data describing the source, treatment and volumes of water used for public supplies by Colorado cities and towns
• Publications - Doc Type: Tech Report

Reported water-quality tolerances for some industrial processing
LRecommended maximum or range of maximum concentrations
in parts per millio!!7

Constituent
or
property

Bak-
ing

car-
bonated
bever-
aqes

sugar
mak-
inq

Food
processing
(general)

Tanning

Dissolved solids . . . . 850-855 . . . . . 850 . . . . . . .
Hardness......... .!! 200-250 . . . . . 10-250 50-513
Alkalinity (as
cacojl) . . . . . . . .. .... 50-128 . . . . . 30-250 128-135
Iron a d Manganese .02 .1-1.5 0.1 0.2-0.3 0.2
calcium.......... . . . . . . . . . . 20 . . . . . . . . . . . . . .
Magnesium........ . . . . . . . . . . 10 . . . . . . . . . . . . . .
Bicarbonate...... . . . . . . . . . . 100 . . . . . . . . . . . . . .
sulfate.......... . . . . 250 20 . . . . . . . . . . . . . .
Chloride......... . . . . 250 20 . . . . . . . . . . . . . .
Fluoride......... . . . . .2-1.0 1.0 . . . . . . .

.!! Some desired.

Water for public supply cannot be expected to meet the re-
quirements for all industrial processing and, therefore, may
require special treatment.

Water for Irriqation

Although water from municipal supplies is not used exten-
sively for irrigation, the problems of water quality to the city
irrigator may be the same as those to the farmer. Applying water
that is of poor quality for irrigation may adversely affect the
soil and thus hinder the growth of plants. one method for eval-
uating the suitability of water for irrigation has been proposed
by the U.S. salinity Laboratory Staff (1954, p. 69-82). By this
method, the water is classified for irrigation according to its
specific conductance and its sodium-adsorption-ratio, which is
an indicator of the tendency of the water to cause soil compaction.
In general, the higher the specific conductance or the sodium-
adsorption-ratio, the less suitable the water for irrigation.
For further information, the reader is referred to the above
publication.

ORGANIZATION AND EXPLANATION OF WATER-SUPPLY RECORDS

Following this section of the report are summary descriptions
of each community water supply. They are listed alphabetically by
the name of the community, the water district, or water company.
Records that supplement the descriptions are tabulated in the back
of the report (table 5) and are also listed alphabetically.

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