Ask a water utility director to list the top risks facing their system and you will hear familiar answers: aging infrastructure, lead service line replacement, cybersecurity, PFAS remediation, rate affordability. What is far less likely to appear — yet is increasingly showing up inside capital programs and long-range plans — is the physical land environment itself.

Land access, right-of-way integrity, watershed land use, and the slow-moving environmental liability attached to utility-adjacent properties are becoming material operational constraints for water systems of every size. They do not announce themselves the way a main break does. They surface gradually — in project delays, in permitting surprises, in treatment cost escalations tied to upstream land conversion — and by the time they are visible, they have already worked their way into budgets built on different assumptions.

The broader business world is beginning to recognize this. A recent Environment+Energy Leader analysis found that land access, environmental liability tied to site conditions, and the intersection of both with water availability are becoming material constraints across industrial sectors — not emerging risks on a distant horizon but pressures already embedded in current capital commitments. Water utilities are not exempt. If anything, they are more exposed than most, because their core product depends entirely on the physical integrity of land they often do not own.

The Quiet Erosion of Right-of-Way Certainty

Water utilities operate through a web of easements and rights-of-way established in many cases decades ago. These legal arrangements grant access to water mains, transmission lines, pump stations, and sewer infrastructure threading through privately owned land. They are foundational to every service call, every emergency repair, every planned maintenance cycle.

The challenge is that the land around those easements has not stood still. Urban growth and suburban densification have progressively filled in the buffers that once surrounded utility corridors. Structures, driveways, irrigation systems, landscaping, and outbuildings now routinely encroach into right-of-way zones that older easement documents never anticipated would be contested. Pipeline and infrastructure specialists have documented this consistently: development encroaching on the ROW restricts access for maintenance, inspections, and future expansion — and poses safety risks from increased human activity near utility infrastructure.

For water utilities, the operational consequence is direct. When an emergency crew cannot reach a valve because a landscaped berm has covered the access point, or a transmission main replacement is delayed because a residential addition sits over the corridor, the cost of that encroachment lands on the utility's operating budget — and ultimately on ratepayers. These are not exotic edge cases. They are common features of any system managing infrastructure through land that was agricultural or undeveloped when easements were granted and is now residential or commercial.

What has elevated this from a persistent nuisance to a strategic risk is the combination of deteriorating infrastructure age, rising replacement capital programs, and the legal complexity of conducting that replacement through a land environment that has materially changed. Utilities that deferred systematic easement inventory and ROW management through the infrastructure deferral era of the 1990s and 2000s are now discovering those deferrals compounded.

Source Water Protection: When Upstream Land Use Becomes Your Operating Cost

The second dimension of land risk for water utilities runs upstream — literally. Source water quality is inseparable from watershed land use. What happens to land in the catchment area above a drinking water intake determines what arrives at the treatment plant, how expensive it is to treat, and how vulnerable the supply is to contamination events no operational protocol can fully prevent.

Research published in 2025 in PLOS Water found that projected land use changes — specifically the conversion of forested land to development — will cause measurable water quality degradation at drinking water intakes across regional watersheds. The study modeled multiple development scenarios through 2070 and found that forest conversion consistently increased concentrations of sediment, nutrients, and other contaminants at intake facilities. In 2024, for the first time, source water protection was ranked the top concern among more than 2,400 water professionals surveyed in the United States.

The operational translation is straightforward: when upstream land converts from forest or agriculture to development, the utility bears the cost in its treatment chemistry, chemical procurement, filter maintenance, and regulatory compliance load. Approximately 75 percent of the world's accessible freshwater originates from forested watersheds. A utility whose watershed is degrading is not just managing a future risk — it is absorbing a cost that compounds unless the upstream land trajectory changes.

The utilities managing this well have moved beyond reactive treatment adjustment and into proactive watershed land stewardship: systematic watershed inventories tracking land ownership, land use activity, and contamination potential; engagement with local planning authorities to influence development decisions that will determine treatment costs for the next generation; and watershed protection expenditure treated not as an environmental program cost but as a quantifiable treatment cost avoidance investment.

Environmental Liability at Legacy Sites: A Cost Curve Moving the Wrong Direction

Water utilities — especially those that have operated treatment plants, pump stations, chemical storage facilities, or former gas-lit infrastructure for decades — carry environmental liability tied to their own sites. Chlorinated solvents from historical chemical storage. PFAS from firefighting foam use at water treatment facilities. Petroleum contamination beneath aging pump stations. These are known categories. What is less understood is how the cost curve on managing them is moving.

Regulatory scrutiny of legacy contamination is tightening. The expectation that a utility could manage historical contamination at a slow, manageable pace — acknowledging the issue without aggressively remediating it — is narrowing as state and federal regulators sharpen cleanup timelines and as PFAS standards bring new categories of contamination into active liability status.