Comparison of Residential Wastewater Treatment Systems ...
Short and Long-term Cost Considerations for Wastewater Treatment Systems. Complete installation of a Norweco system by Farmington, NH-Based A.J. Foss, Inc. costs approximately $6,500, and includes the system's first two years of service. Thereafter, A. J. Foss offers cost-effective service contracts for approximately $150/service visit.
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