San Marcos TX Water Restrictions 2026

Current water restrictions in San Marcos, Texas

San Marcos is under Stage 2 Drought restrictions, limiting outdoor irrigation to one assigned day per week, with watering permitted only before 10 a.m. or after 8 p.m. on that day.

The City of San Marcos declared Stage 2 restrictions in response to critically low levels in the Edwards Aquifer, the primary water source for San Marcos and a system under severe pressure across Central Texas. Stage 2 is triggered when the Aquifer's J-17 index well in Bexar County drops to specific threshold levels established in the city's Drought Contingency Plan. The Edwards Aquifer Authority monitors these levels and coordinates with member cities, including San Marcos, on conservation response.

These restrictions are mandatory — not voluntary — and enforced by the City of San Marcos Utilities Department. Residents do not choose whether to comply; violations carry escalating penalties. The current restrictions remain in place until the Edwards Aquifer recovers to Stage 1 thresholds, with no fixed calendar end date.

The broader Texas context is significant. Nearby San Antonio entered its first-ever Stage 3 drought restrictions through SAWS (San Antonio Water System) in June 2024, and Pflugerville declared a Stage 3 Emergency. Austin maintains year-round Conservation Stage restrictions. The Edwards Aquifer feeds communities across a wide corridor, and regional pressure on the system is at historic highs.

Practically speaking: a resident cannot water their garden on a Wednesday morning unless Wednesday is their assigned watering day. Even then, watering must end before 10 a.m. or begin after 8 p.m. Running an irrigation system at noon on any day — assigned or not — is a violation. Hand watering with a shut-off nozzle and drip irrigation are generally exempt from the day restriction.

Your assigned watering schedule

Here is the core schedule structure under San Marcos Stage 2 restrictions:

Rule	Details
Days per week	1
Day assignment	1 assigned day per week based on address
Allowed hours	Before 10 a.m. or after 8 p.m. only
Hand watering	Exempt — shut-off nozzle required at all times
Drip irrigation	Exempt from day restrictions
New sod/seed	Usually a 30-day establishment window — register with City of San Marcos Utilities

In San Marcos, assigned watering days are typically determined by the last digit of your street address. Even-numbered addresses water on one designated day; odd-numbered addresses water on another. The City of San Marcos Utilities Department publishes the specific day assignments on the city website at sanmarcostx.gov. Residents should verify their assigned day directly with the city, as Stage 2 assignments differ from Stage 1 schedules.

Multi-family residential properties and commercial accounts are subject to the same one-day-per-week limit under Stage 2. Property managers of apartment complexes along the CM Allen Parkway corridor and commercial centers near Centerpoint Road should ensure irrigation controllers are reprogrammed to reflect the single assigned day. Irrigation systems left on default factory schedules are a common source of violations.

New sod and seeded areas may qualify for a temporary establishment exception, but property owners must contact the City of San Marcos Utilities Department before laying sod to register. This exception is not automatic. If you are establishing a lawn after landscaping work, do not assume your contractor has handled this — confirm with the city directly.

San Marcos's hot, dry summers make deep, infrequent watering critical on your one allowed day. Texas live oak (Quercus fusiformis), cedar elm (Ulmus crassifolia), and Texas red oak (Quercus buckleyi) — all common in San Marcos yards and the Blanco River greenbelt areas — benefit from slow, deep drip watering directly at the root zone rather than overhead spray. Because drip irrigation is exempt from the day restriction, residents with established trees are encouraged to use drip lines to supplement tree hydration between assigned watering days.

Fines and penalties

Offense	Penalty
First offense	Written warning
Second offense	Monetary fine issued by City of San Marcos
Subsequent offenses	Escalating fines; potential service restrictions

The City of San Marcos uses a combination of complaint-based reporting and proactive patrol by Utilities staff to identify violations. Neighbors can report suspected violations through the city's utilities department contact channels listed at sanmarcostx.gov. During Stage 2, city staff conduct patrols in residential neighborhoods — particularly in high-density areas near Texas State University and along Ranch Road 12 — and irrigation violations visible from the street are cited without a prior report being required.

If you receive a first-offense warning and believe it was issued in error — for example, your drip system was mistaken for spray irrigation — you may contest the notice through the City of San Marcos Utilities Department. Contact the department in writing within the deadline stated on the warning notice. Documented proof such as irrigation controller logs or photographs of your drip system setup is the most effective evidence. There is no formal penalty for a successfully contested first warning, but delays in responding can result in escalation to a fineable offense.

Other outdoor water rules

Stage 2 in San Marcos restricts more than lawn irrigation. The following activities have specific rules under the current drought stage:

• Vehicle washing: Washing vehicles at home is limited to your assigned watering day and must use a bucket or a hose with an automatic shut-off nozzle. Commercial car washes that recycle water are permitted to operate normally.
• Pool filling and refilling: Filling new pools requires a variance from the City of San Marcos. Topping off existing pools to compensate for evaporation is permitted but should be minimized; pool covers are strongly recommended to reduce evaporation losses during San Marcos's high-heat months.
• Pressure washing: Non-essential pressure washing of sidewalks, driveways, and exterior walls is prohibited. Pressure washing for health and safety reasons (mold remediation, food service compliance) requires documentation.
• Ornamental fountains: Decorative fountains and water features that do not recirculate water must be shut off during Stage 2.
• Construction water use: Contractors using water for dust control or concrete work on active sites must comply with Stage 2 limits and may need to coordinate with the city utilities department for site-specific guidance.
• Restaurant water service: San Marcos restaurants and food service establishments are required to serve drinking water only upon customer request under Stage 2 restrictions.

San Marcos's water supply and source

San Marcos draws its municipal water supply almost entirely from the Edwards Aquifer, one of the most productive artesian aquifers in the United States and one of the most stressed. The aquifer is a karst limestone system that stretches from Kinney County northeast through Bexar, Comal, Hays, and Travis Counties. San Marcos sits in Hays County directly above the aquifer's recharge and artesian zones.

The San Marcos Springs — located at Spring Lake on the Texas State University campus — discharge directly from the Edwards Aquifer and have historically been the most consistent spring system in the American Southwest. These springs feed the San Marcos River, which runs through the heart of the city. The health of the springs is directly tied to aquifer levels: when the J-17 index well in San Antonio drops, so does spring flow in San Marcos.

San Marcos is a member entity of the Edwards Aquifer Authority (EAA), the regulatory agency established by the Texas Legislature under Senate Bill 1477 to manage aquifer withdrawals. The EAA sets pumping permits, monitors water levels at index wells including J-17 (Bexar County) and J-27 (Uvalde County), and coordinates with cities on drought stage responses. When the J-17 well falls below established trigger thresholds, the EAA notifies member utilities — including San Marcos — and cities activate their drought contingency plans.

San Marcos also operates the Aqua Texas connection and has agreements with neighboring utilities as emergency interconnects, but these do not meaningfully substitute for the aquifer as a primary source. The city's water treatment capacity runs through the San Marcos Water Treatment Plant, which processes Edwards Aquifer water for distribution across the city's service area.

Unlike cities in far West Texas or the Texas Panhandle that rely on the Ogallala Aquifer, the Edwards is a rechargeable system — rainfall in the Hill Country recharge zone (primarily Kendall, Kerr, and Bandera Counties) replenishes it over months. However, recharge is highly variable, and extended periods of below-normal rainfall in those counties can cause aquifer levels to drop rapidly.

HOA rules during water restrictions

Texas Property Code § 202.007 prohibits a property owners' association from enforcing any requirement that a homeowner water their lawn or maintain turf in a living condition during a declared water shortage. Under Stage 2 mandatory restrictions issued by the City of San Marcos, homeowners are legally protected from HOA fines or citations related to brown, dormant, or dead grass that results from compliance with city watering limits.

This protection applies across Hays County HOAs governing San Marcos properties, including communities in Trace, Kissing Tree, and newer subdivisions along Wonder World Drive and Kyle Crossing Road. The statute does not protect against violations unrelated to watering restrictions — an HOA may still enforce rules about debris, hardscape maintenance, or non-lawn landscaping. If your lawn turns brown because you are following the one-day-per-week Stage 2 schedule, document your compliance with photos and your watering log.

If your HOA sends a notice demanding lawn maintenance or threatens a fine during active Stage 2 restrictions, you may respond in writing with the following template:

"This notice is to inform [HOA Name] that the property at [Address] is currently in compliance with mandatory Stage 2 Drought restrictions issued by the City of San Marcos. Under Texas Property Code § 202.007, a property owners' association may not enforce any requirement that conflicts with a government-mandated water use restriction. Any lawn dormancy or browning at this property is a direct result of compliance with City of San Marcos Stage 2 mandatory watering limits. Please remove any pending violation notice and confirm in writing that no fine will be assessed."

Keep a copy of the city's official Stage 2 restriction notice (available at sanmarcostx.gov) attached to any correspondence with your HOA.

Lawn survival guide for San Marcos

San Marcos sits in the warm-season transition zone, with summers that regularly exceed 100°F and a climate that supports heat-tolerant turfgrasses. The following grasses are the ones actually grown in San Marcos residential yards:

Grass Type	Drought Tolerance	Dormancy Behavior	Recovery Speed
Bermudagrass	High	Goes dormant, turns brown; recovers quickly	Fast once water resumes
Zoysiagrass	Moderate-High	Slower to brown; slower to green up	Moderate
St. Augustinegrass	Moderate	Shows stress faster; more vulnerable in Stage 2	Moderate if not too far gone
Buffalograss	Very High	Native to Central Texas; thrives under restriction	Excellent

Under San Marcos's Stage 2 one-day-per-week schedule, Bermudagrass is the most forgiving turfgrass in the region. It goes dormant and turns straw-brown but has extensive root systems that survive even prolonged dry periods. Do not attempt to revive Bermuda by fertilizing during drought — nitrogen applications during Stage 2 push top growth the roots cannot support. Raise your mower height to 2–3 inches to reduce moisture loss from the soil surface. Buffalograss, a native Central Texas prairie grass increasingly popular in San Marcos xeriscape conversions, can survive on even less water than the city's current schedule provides and is worth considering for future replanting.

St. Augustinegrass, common in older San Marcos neighborhoods, is the most vulnerable under Stage 2. If your St. Augustine is in full sun on sandy or shallow soil — common in the Wonder World area where the Edwards limestone is close to the surface — concentrate your single weekly watering in the early morning window before 10 a.m. to minimize evaporation loss. Apply water slowly and deeply rather than in short bursts. Hays County's clay-loam soils in lower elevations hold water longer, giving St. Augustine slightly better drought buffering than on the rocky uplands. Avoid scalping or aggressive dethatching until restrictions are lifted.

Frequently asked questions

What day can I water my lawn in San Marcos right now?

Under Stage 2, San Marcos assigns one watering day per week based on your street address — typically determined by whether your address number is odd or even. You must water only on your assigned day, and only before 10 a.m. or after 8 p.m. Check your specific assigned day at sanmarcostx.gov or contact San Marcos Utilities directly, as Stage 2 assignments differ from Stage 1.

When will Stage 2 restrictions end in San Marcos?

There is no fixed end date. Stage 2 restrictions remain in effect until the Edwards Aquifer recovers to the threshold levels that trigger a return to Stage 1 under San Marcos's Drought Contingency Plan. The J-17 index well in Bexar County must rise to the defined Stage 1 trigger level before the city can reduce restrictions. Given that the aquifer is at critically low levels region-wide — and San Antonio entered Stage 3 in 2024 — there is no near-term expectation of an early end to Stage 2 in San Marcos.

Can I water my vegetable garden on a non-assigned day?

Vegetable gardens watered by hand with a shut-off nozzle are generally exempt from the day restriction under Stage 2. Drip irrigation to vegetable beds is also exempt. If you are using a sprinkler or automated system to water your garden, you must use your assigned day only. Hand watering gives you daily access to your garden without violating Stage 2 rules.

Can I wash my car at home in San Marcos during Stage 2?

Yes, but only on your assigned watering day and only with a hose equipped with an automatic shut-off nozzle — never with a running hose. Commercial car washes that use recycled water systems are permitted to operate without day restrictions. If you are washing a fleet vehicle for a business, the same residential rules apply to on-site washing.

Does San Marcos use smart meters to catch irrigation violations?

The City of San Marcos has been expanding its Advanced Metering Infrastructure (AMI) system, which can detect unusual water flow patterns consistent with irrigation use outside permitted hours. While meter data is one tool available to the utility, the primary enforcement mechanism during Stage 2 is a combination of staff patrols and neighbor complaints submitted through the city's utilities department. Automated meter alerts flag unusual overnight or midday water consumption for follow-up.

What rebates does San Marcos offer for water-efficient upgrades?

The City of San Marcos participates in the Edwards Aquifer Authority's water conservation rebate programs, which have historically included rebates for WaterSense-labeled irrigation controllers, soil moisture sensors, and high-efficiency toilets. San Marcos Utilities may also offer direct rebates for turf conversion to drought-tolerant or native landscaping. Check current program availability at sanmarcostx.gov or the EAA's conservation program page, as rebate funding availability changes year to year.

Can my HOA fine me for a brown lawn during Stage 2?

No. Texas Property Code § 202.007 prohibits HOAs from fining homeowners for lawn dormancy or browning that results from compliance with a mandatory government water restriction. Stage 2 in San Marcos is a mandatory restriction issued by the City of San Marcos, which fully activates this protection. If you receive an HOA fine, send a written response citing the statute and the city's Stage 2 declaration. See the template letter in the HOA section above.

Is the San Marcos River affected by the current drought restrictions?

Yes. The San Marcos River is fed by San Marcos Springs, which discharge directly from the Edwards Aquifer beneath Spring Lake at Texas State University. As aquifer levels fall, spring flow decreases, directly reducing the river's volume and temperature stability. The San Marcos salamander and fountain darter — both federally listed species dependent on consistent spring flow — are acutely sensitive to aquifer stress. Reduced spring discharge during periods of low J-17 readings is one of the clearest local indicators of how directly the drought affects San Marcos beyond lawn watering.

What days can I water my lawn in San Marcos?

1 assigned day/week Hand watering with a shut-off nozzle is typically allowed any day during permitted hours.

What time can I water in San Marcos?

Watering is allowed Before 10am or after 8pm. Watering outside these hours is a violation even on your assigned day.

What are the fines for watering violations in San Marcos?

First offense: Warning first. Repeat violations: Fines. Contact City of San Marcos for the full enforcement schedule.

How do I report a water waste violation in San Marcos?

Contact City of San Marcos or visit https://www.sanmarcostx.gov. Most utilities accept online reports and respond within 48 hours.