Since the early 1990s, SPI has participated in the development of over 300 mgd of potable water treatment capacity specifically on surface water. The projects have included various treatment processes including clarification, membrane filtration and disinfection processes such as chlorination or UV. Some of the source waters where SPI has applied membrane filtration have been Colorado River, Columbia River, Mississippi River, Missouri River, Chatahoochee River, Tuloumne River, Central Arizona Project canal and Salt River Project canal water and various other surface water sources. SPI is contracted to provide process monitoring and optimization services to several full scale MF and UF plants treating surface waters. As a result, SPI is very knowledgeable in the long-term performance of membrane filtration plants in this application.

SPI is well versed in current and upcoming regulatory requirements which require consideration of advanced processes for surface water treatment including Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) and the Stage 2 Disinfection/Disinfection Byproducts Rule. SPI was a major contributor to the development of the USEPA Membrane Filtration Guidance Manual as part of the development of the LT2ESWTR.

Contact SPI to discuss your surface water application and how we can assist in ensuring its successful implementation and operation.


SPI’s Project Files

SPI’s array of projects encompasses many areas of water treatment. Below is a sampling of projects completed by SPI’s engineers and staff.