NIGP 90622: Corrosion Control; Cathodic Protection; Electrolysis - Architectural

NIGP 90622 Corrosion Control; Cathodic Protection; Electrolysis - Architectural is an Item code under which state and local governments procure chemical treatment and injection services to prevent corrosion and odor in wastewater infrastructure. The City of Dallas's recent solicitation for sewer odor and corrosion control services—a 36-month Indefinite Delivery/Indefinite Quantity agreement for the purchase and injection of Liquid Ferrous Iron Salt, Liquid Ferrous Chloride, and Bioxide additives into the wastewater collection and treatment system—exemplifies the core work being bought under this code. Issuing bodies are primarily municipal water and utilities departments, with activity driven by aging wastewater infrastructure requiring ongoing chemical treatment to extend asset life and protect public health. The scope encompasses both materials supply and on-site injection services, with contracts typically structured as multi-year service agreements and evaluated on experience with similar municipal clients, insurance requirements (including Environmental Impairment/Pollution Liability), and pricing stability mechanisms such as Producer Price Index adjustments.

The City of Dallas's procurement, posted May 21, 2026 with bids due June 26, 2026, carried an estimated contract value of $10 million over the initial 36-month term and included a mandatory Small Business Enterprise participation goal with local vendor preference. Recent activity is concentrated in Texas and Georgia jurisdictions. Bidders must demonstrate five years of established experience providing sewer odor and corrosion control services and provide references from at least two prior clients. The Dallas solicitation imposed a wage floor of $23.06 per hour, required comprehensive insurance (Workers' Compensation with $500,000 Employers' Liability minimum, Commercial General Liability of $1 million per occurrence and $2 million aggregate, Environmental Impairment/Pollution Liability of $1 million per claim, and Commercial Crime Insurance of $1 million per occurrence), and mandated that all SBE subcontractors perform work under a Commercially Useful Function within certified NAICS codes with prior written approval from the Business Enterprise Hub.