FAQs About Water Hardness Treatment Proposal
What total hardness, calcium hardness and TDS (Total Dissolved Solids) levels are expected after treatment?
The district has established a total hardness goal of 115 mg/L. Total hardness is a combination of the calcium and the magnesium concentrations in a water supply. Scaling on plumbing, appliances and dishes is caused by excess calcium hardness in the water. The Pellet Softening treatment process removes only the calcium hardness in the water. Magnesium does not contribute to scaling issues and provides health benefits. The following table shows the calcium hardness, total hardness and TDS for the district’s current wells, the wells treated with the Pellet Softening process, and Denver Water.
Do customers that have bought an in-home treatment system have to pay for the implementation of a centralized treatment process?
The centralized treatment process will treat the entire District's water supply therefore all customers will share in the cost to build and operate the system.
How will customers benefit from a centralized treatment system?
- Less scaling on piping, appliances and glassware
- Less energy use
- Longer appliance life (dishwasher & hot water heater)
- Less operating costs and maintenance on in-home treatment systems
- Potentially improved taste
- Possible reduction or elimination of purchasing bottled water
- Environmentally sustainable
- Less detergent/soap used, improved laundry results
How will the Pellet Softening System change sodium levels in the water?
If a centralized pellet softening treatment process is implemented, the sodium levels will be similar to that of an in-home softening system. However, the district is evaluating different operating parameters in the pellet softening process that will lower the sodium levels in the treated water.
Will there be an impact to lawn/landscaping by applying softened water?
Based on Irrigation Water Quality Criteria from Colorado State University lawn and landscaping will not be affected by the softened water.
At the November District's Board of Directors meeting, a question was asked about the effect of soft water on household appliances.
The Board of Directors has set a hardness level goal of 115mg/L after softening treatment. A drinking water is considered moderately hard if it has a hardness level between 60 mg/L and 120 mg/L. As the District proceeds with the centralized softening treatment, the drinking water produced would be on the upper end of moderately hard. At this hardness level, the negative effects of hard water on home appliances is greatly reduced while maintaining a sufficient level of hardness to avoid the negative effects of soft water.
Customers have asked about the potential of providing rebates versus centralized treatment.
As a special district we aren't able to provide a rebate to individual customers Furthermore it was determined in the Hardness Advisory Committee process that rebates weren’t equitable or sustainable. Not all district customers would benefit equally and the increase of in-home water softening will likely have a negative impact on the waste water treatment plant’s ability to meet future discharge permits.
Some customers believe the district’s water and sewer rates are already too high and question why additional increases are needed to implement centralized softening.
The district’s water and sewer rates are established to cover operating expenses, capital costs to maintain the system, debt service, and contractual obligations. We currently do not anticipate that this project will increase sewer rates. The following table, provided by Denver Water, shows that the district’s current water rates are fairly competitive with other Metro area water providers.
The following table shows the district's annual water and wastewater rates compared to the surrounding Denver Metro area rates provided by a 2016 comparison study done by Raftelis Financial Consultants:
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