Recycling Treated Municipal Wastewater for Industrial Water Use

Section 3
Inventory of Major WWTPs and Potential Industrial Reuse Demands
Craddock Consulting Engineers 3-27
In Association with CDM & James Crook
WWReuseTM1_Sec 3_final.doc
Factors Influencing Potential for Industrial Reuse
The northern three-quarters of the Mississippi River-Headwaters watershed is in
Ground Water Area 4, known for good surficial aquifers, less reliable buried sand
aquifers, and a limited supply from the bedrock. Well interference problems have
been experienced in this area. The southern end, in the 7-county metro area through
St. Cloud has a reliable bedrock supply and moderate bearing surficial and buried
sand aquifers. The susceptibility for contamination index rates this watershed as
medium to highest in the mid-watershed regions, with low susceptibility areas
interspersed through the north and eastern parts of the watershed. As with the
Minnesota River watershed, ground water supply and quality is highly variable
across the watershed and site-specific conditions must be considered in evaluating the
adequacy of the water supply.
The Mississippi River-Headwaters watershed has similar surface water issues as the
Lower Mississippi River and Minnesota River, particularly in relation to the Lake
Pepin TMDL. Like these two watersheds, the metro area has a tremendous influence
on the quality of the water leaving the watershed. Municipal and industrial
dischargers in this watershed will be an integral part of the solution to meeting the
water quality goals downstream.
Missouri River
Industrial Water Use
There are only two industries in the Missouri River with a permit to withdraw water.
Both are sand and gravel washing operations that use surface water. In 2004 only one
of these businesses withdrew water for an annual average of 0.06 mgd, as shown in
Table 3.13a.
Table 3.13a. Industrial Water Use in the Missouri River Watershed
2004 Water Use, mgd
Industry Category Ground Water Surface Water Total
Sand and Gravel Washing 0.00 0.06 0.06
Total 0.00 0.06 0.06
Source: MDNR, 2004
WWTPs
The Luverne WWTP is the only facility with a capacity greater than 1 mgd and
discharged nearly 0.9 mgd in 2005, as shown in Table 3.13b. The Luverne WWTP is
operating at about 60% of its design capacity. The combined capacity of the smaller
WWTPs in the watershed is 2.0 mgd.