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West Fargo increases sewer chemical budget by $200,000 to control H2S odor and corrosion
Summary
Commission approved a $200,000 line‑item increase (from $150,000 to $350,000) in the sewer chemical budget to address elevated hydrogen sulfide (H2S) causing odor and corrosion; staff said ozone injection is being tested as a potential capital solution.
The City of West Fargo approved a $200,000 adjustment to the 2025 sewer chemical line item on Sept. 22 to address elevated hydrogen sulfide (H2S) levels and associated odor and corrosion concerns.
Public Works Director Matt Ambick told the commission staff observed high H2S concentrations and began increased chemical injections late last year; the current treatment cost is roughly $1,000 per day. Ambick said the increase moves the chemical line item from $150,000 to $350,000 for 2025 but does not change the overall sewer department budget — it is a line‑item reallocation.
Ambick said staff is testing ozone injection stations as a longer‑term solution. A one‑time capital ozone generator (capacity example noted ~4 million gallons/day) could cost roughly $250,000 with operating costs near $10–15,000 annually; staff will pilot a small rental unit for proof of concept before recommending a capital purchase.
Commissioners endorsed the approach and approved the $200,000 line‑item increase by motion.
