A water shortage contingency plan is a document a water utility adopts before a drought arrives, setting out staged shortage levels, the restrictions that take effect at each stage, and the legal authority the agency will use to enforce them. State laws generally require urban water suppliers to adopt one as part of broader water management planning. The plan has to spell out how the utility will measure available supply against demand each year, what it will do when the two don’t match, and how it will stay financially solvent while selling less water.
Required Elements Under State Law
Specific requirements vary by state, but most frameworks require the same core components:
- An annual assessment procedure the supplier will follow to compare available water against projected demand.
- Defined shortage stages tied to specific supply conditions or percentage reductions in available water.
- Response actions for each stage, covering both supply augmentation and demand reduction.
- Identification of the local ordinances, emergency powers, or state statutes that authorize the utility to impose and enforce restrictions.
- Communication protocols for notifying the public, coordinating with neighboring suppliers, and reporting to state regulators.
- A financial analysis of how reduced sales during a shortage will affect revenue and how the utility will remain stable.
A plan missing required elements can disqualify the supplier’s broader water management plan from state approval. In several states, a supplier without an approved plan becomes ineligible for state grants, loans, or drought assistance funding. That gives utilities a strong incentive to finish the plan before a shortage, not during one.
The Six Standard Shortage Levels
The most widely adopted framework organizes shortages into six progressive levels, each tied to a 10-percentage-point band of gap between available supply and normal demand.
- Level 1 (up to 10% shortage): voluntary conservation, public awareness campaigns, leak-repair reminders.
- Level 2 (up to 20% shortage): mandatory outdoor watering schedules begin; irrigation limited to certain days, shut-off nozzles required on hoses.
- Level 3 (up to 30% shortage): tighter outdoor restrictions; construction water use and irrigation of decorative landscaping on public medians are commonly prohibited.
- Level 4 (up to 40% shortage): severe restrictions; vehicle washing may be banned except at commercial facilities using recirculated water, and filling swimming pools is typically prohibited.
- Level 5 (up to 50% shortage): near-emergency conditions; new service connections may be frozen, and single-pass cooling systems in commercial buildings are shut down.
- Level 6 (greater than 50% shortage): full emergency; all landscape irrigation banned, new connections prohibited, water limited to essential indoor needs including drinking, cooking, sanitation, and fire protection.
The six levels give different agencies a common vocabulary when describing drought severity to regulators and the public. A utility reporting a Level 4 shortage communicates something specific and comparable across jurisdictions. Suppliers that historically used different stage numbering systems can cross-reference their existing categories to the six-level standard rather than rebuilding their plans.
At Levels 5 and 6, the plan shifts from broad conservation to triage. Remaining water is prioritized for life-safety uses: hospitals, fire suppression, dialysis centers, and basic residential sanitation. Healthcare facilities carry a particular burden because they rely on water for sterilizing equipment, running HVAC systems, cooling medical devices, and performing procedures like dialysis that cannot safely be deferred.1Centers for Disease Control and Prevention. Emergency Water Supply Planning Guide for Hospitals and Healthcare Facilities
Response Actions as the Shortage Deepens
Each level triggers a specific package of response actions in two broad categories: supply augmentation and demand reduction. The mix changes as the shortage worsens.
On the supply side, early-stage responses include activating standby wells, increasing purchases from wholesale suppliers, and accelerating repairs to reduce system losses from leaks. As conditions deteriorate, utilities may negotiate emergency water transfers from neighboring jurisdictions, deploy temporary treatment systems, or tap emergency reservoir reserves normally held in long-term storage.
On the demand side, restrictions escalate from voluntary conservation campaigns at Level 1 to near-total outdoor watering bans at Level 6. Restrictions typically target the highest-volume discretionary uses first, which is why outdoor irrigation is always the first thing to go. A well-designed plan matches each action to a specific stage and estimates how much demand that action will actually reduce, so the utility knows whether its response package can close the gap at a given level.
Commercial and Industrial Users
Commercial and industrial users face their own escalating restrictions. At moderate stages, businesses may be required to fix leaks within a compressed timeline, switch to recirculating water in car washes and laundry facilities, and eliminate single-pass cooling systems. At higher stages, water-intensive recreational businesses like water parks may be shut down entirely, and new commercial connections can be frozen.
Financial pressure also increases through tiered drought pricing. Utilities commonly add temporary per-unit surcharges on top of normal rates during declared shortages, with the surcharge increasing for higher usage tiers. The surcharges discourage high-volume use and help offset revenue the utility loses when total consumption drops. Rates vary widely by jurisdiction and stage, but the structure is consistent: the more water a commercial user consumes above baseline, the steeper the penalty per unit.
The Annual Supply and Demand Assessment
The plan doesn’t sit on a shelf. State laws typically require urban water suppliers to run a formal supply and demand assessment every year, comparing available water to projected consumption for the coming year. That assessment is what determines whether a shortage exists and which stage of the plan activates.
The assessment pulls together several categories of data:
- Available supply: reservoir levels, groundwater conditions, snowpack measurements, surface water allocations, and any imported water allotments.
- Projected demand: historical usage patterns adjusted for current-year weather, population growth, and any new large-volume connections.
- Infrastructure constraints: planned maintenance shutdowns, aging pipeline capacity limits, treatment plant bottlenecks, and known system losses from leaks.
- Regulatory conditions: environmental flow requirements, court-ordered pumping restrictions, or allocation cutbacks from wholesale suppliers.
Comparing total available supply against total expected demand yields the percentage gap, which maps to a shortage level. Many state frameworks require the assessment to be completed and submitted to the state water agency by a fixed annual deadline, with the results dictating whether the utility must activate its contingency plan or can continue normal operations.
Utilities don’t generate all their supply data internally. The U.S. Drought Monitor, a joint product of NOAA, the USDA, and the National Drought Mitigation Center, publishes weekly drought classification maps that many utilities incorporate into their assessments. The Monitor classifies conditions on a five-tier scale from D0 (abnormally dry) through D4 (exceptional drought), using a blend of precipitation indices, soil moisture data, streamflow measurements, and reports from local observers.2U.S. Drought Monitor. About the Data – Drought Classification The Monitor’s classification doesn’t directly trigger a utility’s shortage stages, which are defined locally based on each system’s supply sources, but it provides context for planning beyond the current season.
Enforcement, Penalties, and Variances
Mandatory restrictions only work if violations have consequences. Most contingency plans establish a progressive penalty structure that starts with warnings or modest fines and escalates for repeat offenders. A common structure sets first-violation fines in the $50 to $100 range, with second and third violations climbing to $250 and $500 or more. Some frameworks increase fines at higher shortage stages: a violation during a Level 1 shortage might carry a $50 fine, while the same violation during a Level 6 emergency could result in a fine exceeding $1,000.
Beyond fines, utilities often have authority to install flow-restricting devices on the service lines of persistent violators, throttling water pressure to a trickle that covers basic indoor needs but makes outdoor irrigation impossible. The plan should identify the specific legal authority, usually a local ordinance or state statute, that empowers the utility to impose each type of penalty.
Not every property can comply with blanket restrictions without serious harm. Commercial operations that depend on water to prevent permanent damage to perishable goods, medical facilities with water-dependent equipment, and properties with newly planted landscaping required by local codes may all have grounds for a variance. The standard for approval is high. Applicants generally must demonstrate that the restriction would cause them disproportionate harm compared to other users, not just inconvenience. Agencies that grant variances usually attach conditions: the exempted user must still implement every feasible conservation measure and may face reduced allocations rather than full exemption.
Residents and businesses who receive a water waste citation can generally challenge it through administrative review. The specifics vary, but the process typically involves requesting a hearing before a designated official or board and presenting evidence that the citation was issued in error or that circumstances warrant a waiver. Filing an appeal does not automatically suspend the fine. Most jurisdictions require payment or a bond while the appeal is pending, though some will grant a stay when circumstances justify it.
Revenue Stabilization During a Shortage
Every water utility faces the same paradox during a drought: the agency orders customers to use less water, and revenue drops because it sells water by volume. A well-structured contingency plan anticipates that problem and includes a financial strategy for staying solvent while conservation mandates are in effect.
The common tools include drought surcharges added to customer bills during declared shortage stages, accelerated increases to higher-tier pricing that penalizes above-average consumption, and drawdowns from rate stabilization reserve funds set aside during normal years. Reduced water purchases and lower pumping costs partially offset the revenue decline, but fixed costs like debt service, staff, and infrastructure maintenance don’t shrink when consumption drops.
If the shortage is severe and prolonged enough that surcharges and reserves can’t cover the gap, the utility may need to cut non-essential operating expenses, defer capital projects, or implement emergency rate increases. The plan should map these escalating financial responses alongside the physical shortage levels, so the governing board isn’t making budget decisions under crisis pressure without a framework.
Federal Emergency Response Plans Are a Separate Requirement
State contingency plans are not the only planning obligation. Under the Safe Drinking Water Act, as amended by the America’s Water Infrastructure Act of 2018, community water systems serving more than 3,300 people must also maintain a separate emergency response plan. That plan has to incorporate findings from a risk and resilience assessment covering both deliberate acts and natural hazards, including the physical condition of infrastructure, cybersecurity of automated systems, chemical handling, and the financial health of the system.
The emergency response plan must include strategies to improve system resilience, procedures and equipment for responding to emergencies, and actions to reduce the impact of natural disasters on safe drinking water delivery. The law also requires development of alternative water supply options if primary sources become unavailable.
Systems must review and, if necessary, revise both the risk assessment and the emergency response plan every five years, then certify completion to the EPA. The current cycle sets certification deadlines by system size: systems serving 100,000 or more people faced a March 2025 deadline for the risk assessment, mid-size systems serving 50,000 to 99,999 must certify by December 2025, and smaller systems serving 3,301 to 49,999 must certify by June 2026. Emergency response plan certifications follow six months after each risk assessment deadline.3Office of the Law Revision Counsel. 42 U.S. Code 300i-2 – Community Water System Risk and Resilience Systems must keep copies of both documents on file for at least five years after certification.4EPA. AWIA Section 2013/SDWA Section 1433: Risk and Resilience