Sherman renews wastewater chemical contracts, accepts 11.75% magnesium hydroxide rise
City of Sherman, Texas · Meeting date: October 19, 2026 · Published: October 20, 2026
Sherman City Council has approved annual renewals for the chemicals used at its wastewater treatment plant, drawing on a FY2027 treatment-services chemical budget of $628,060. The package retains Polydyne, Garrison Minerals and Environmental Operating Solutions as suppliers.
Key points
- Council approved Resolution 7689 on 19 October, renewing annual chemical-supply contracts for the Sherman Wastewater Treatment Plant.
- The FY2027 treatment-services budget contains $628,060 for chemical costs.
- Garrison Minerals' magnesium hydroxide renewal permits an 11.75% price increase; Polydyne's polymer renewal is for one year at the same terms, conditions and prices.
- Environmental Operating Solutions will supply MicroC 2000, and its liquid-carbon pricing is subject to a City review in February 2027.
Full report
Sherman City Council has renewed the supply contracts for three core wastewater-treatment chemicals, committing the city to continue purchasing magnesium hydroxide, polymer and liquid carbon for the Sherman Wastewater Treatment Plant in FY2027.
Resolution 7689 was approved as part of the consent agenda on 19 October. The renewal package retains Garrison Minerals for magnesium hydroxide, Polydyne for polymer and Environmental Operating Solutions Inc. (EOSi) for MicroC 2000 liquid carbon. The city has budgeted $628,060 for treatment-services chemical costs in FY2027.
The procurement includes different commercial terms across the three supplies. Sherman’s one-year renewal letter to Polydyne, whose previous contract was dated 18 August 2025, requests an extension under the same terms, conditions and prices. The polymer renewal is associated with contract TMSV-IFB8001-27.
Garrison Minerals’ one-year magnesium hydroxide renewal, also linked to TMSV-IFB8001-27, allows an 11.75% price increase. The city’s renewal correspondence required verification of the material-cost increase before approving it.
For liquid carbon, EOSi’s July quote lists MicroC 2000 at $3.98 per gallon for 4,500 gallons, or $17,910, excluding sales tax, delivered to Sherman South WWTP. An amendment to the wastewater-treatment chemical contract dated 9 September gives the city the right to review EOSi liquid-carbon pricing in February 2027. The document states that a review does not guarantee acceptance of EOSi pricing and allows the city to rebid the chemical or negotiate any requested increase if staff find the proposed pricing unacceptable.
The resolution authorises the City Manager to renew the multiple vendor contracts for the annual chemical supply in accordance with the attached contract documents, using FY2026-27 budget funds.
This summary was generated by AI based on the source document and may contain errors.
Source: City Council Meeting, City of Sherman