Our water supplies, including water provided to our customers, are subject to possible contaminants, including those from:
?naturally occurring compounds or man-made substances;?chemicals and other hazardous materials;?lead and other materials;?manufactured sources, such as pharmaceuticals and personal care products; and ?possible deliberate or terrorist attacks.
Depending on the nature of the water contamination, we may have to interrupt the use of that water supply until we are able to substitute, where feasible, the flow of water from an uncontaminated water source, including if practicable, the purchase of water from other suppliers, or continue the water supply under restrictions on use for drinking or broader restrictions against all use except for basic sanitation and essential fire protection. We may experience a loss of revenue and incur significant costs, including, but not limited to, costs for water quality testing and monitoring, "do not consume" expenses, treatment of the contaminated source through modification of our current treatment facilities or development of new treatment methods, the purchase of alternative water supplies, or litigation related matters, including governmental enforcement actions. In addition, the costs we could incur to decontaminate a water source or our water distribution system and dispose of waste could also be significant. The costs resulting from the contamination may not be recoverable in rates we charge our customer, or may not be recoverable in a timely manner. Further, we may incur a loss of revenue in the event we elect to waive customers' water and wastewater charges. If we are unable to adequately treat the contaminated water supply or substitute a water supply from an uncontaminated water source in a timely or cost-effective manner, there may be an adverse effect on our business, reputation, financial condition, and results of operations. We could also be subject to:
?claims for consequences arising out of human exposure to contamination and/or hazardous substances in our water supplies, including toxic torts;?claims for other environmental damage;?claims for customers' business interruption as a result of an interruption in water service;?claims for breach of contract;?criminal enforcement actions;?regulatory fines; or ?other claims.
We incur substantial costs on an ongoing basis to comply with all laws and regulations. New or stricter laws and/or regulations could increase our costs. Although we may seek to recover these costs through an increase in customer rates, there is no guarantee that the various state regulators would approve such an increase.
We have been working to prevent lead leaching from home plumbing sources by reducing water corrosivity and adding chemicals that can prevent leaching of lead in pipes and homes. We have a program to evaluate all changes in water sources prior to initiating a change in water supply. We also focus on identifying and removing lead service lines and encouraging customers to replace the customer-owned portion of the service line if it is lead as they are identified during our main replacement program or during other maintenance activities. In 2019, we initiated a "do not consume" advisory for some of our customers served by our Illinois subsidiary, which resulted in a loss of revenues and increased operating costs and for which we anticipate an additional recovery of other costs and losses. The do not consume advisory was lifted in 2019 and, in 2022, the water system was determined to be in compliance with the federal Lead and Copper Rule. We filed a claim with our insurance carrier for costs and losses incurred in 2019 related to the do not consume advisory, for which we recovered a portion of the costs and losses and for which we anticipate an additional recovery of other costs and losses.
We are devoting our attention to various emerging contaminants, including the Per- and Polyfluoroalkyl Substances (PFAS) family of chemicals and other chemicals and substances that do not have any federal regulatory standard in drinking water. We comply with governmental agency guidance that recommends the standard of protection from these contaminants, and we monitor proposed standards and other governmental agency guidance regarding these contaminants. On March 14, 2023, the U.S. Environmental Protection Agency (EPA) announced the proposed National Primary Drinking Water Regulation (NPDWR) for the treatment of six PFAS compounds. The NPDWR proposed maximum contaminant levels (MCLs) in drinking water. It is expected that the EPA will finalize the regulation in 2024. The Company will be provided a three-year window to comply with the NPDWR, and the Safe Drinking Water Act allows for an additional potential for a two-year extension at the state level, or the Compliance Period. We expect that the regulation, once finalized, will result in changes to or addition of certain treatment processes that will require increased capital expenditures and operating expenses. The Company performed its initial analysis of the NPDWR and estimates an investment of at least $450,000,000 of capital expenditures to install additional treatment facilities over the Compliance Period in order to comply with the proposed NPDWR. This figure could increase as plans for construction execution are refined or if additional sites require treatment in the future. Additionally, the Company estimates annual operating expenses of approximately five percent of the installed capital expenditures, in today's dollars, related to testing,treatment, and disposal. These are preliminary estimates and actual capital expenditures and expenses may differ based upon a variety of factors, including supply chain issues and site-by-site requirements.
We may incur costs to defend our position and/or incur reputational damage even if we are not liable for consequences arising out of human exposure to contamination and/or hazardous substances in our water supplies, other environmental damage, or our customer's business interruption. Our insurance policies may not be sufficient to cover the costs of our defense or, in the event we are liable, these claims, and losses incurred, may make it difficult for us to secure insurance in the future at acceptable rates. Such claims or actions could harm our business, reputation, financial condition, and results of operations.