Is Manchaca, TX Tap Water Safe to Drink?
Graded D, with 42 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
47.9/100
waterverge.com Manchaca, TX — Water Quality Report
Manchaca's drinking water received a grade of D (47.9 out of 100), indicating poor water quality. The city's 5 water systems serve approximately 2,164 residents using groundwater.
Lead levels were measured at 2.5 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 82 violations on record, including 32 health-based violations. 42 remain unresolved.
What to know about Manchaca's water
Manchaca ranks #805 out of 1067 cities in Texas for water quality, placing it among the lowest-rated in the state.
Manchaca relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Manchaca may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 15 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Manchaca, TX water safe to drink?
Manchaca's drinking water has significant quality concerns based on EPA testing data. With a grade of D (47.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 2,164 residents using groundwater (wells).
Recent water quality updates for Manchaca
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Manchaca's water quality assessment. Grade: D (47.9/100).
Contaminants: Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-4879). Flood event — may have impacted local water infrastructure.
Contaminants: Consumer Confidence Rule.
Contaminants: Public Notice.
Federal disaster declaration (FEMA DR-3540). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Manchaca's water supply.
Well within EPA limits.
Violation history
Manchaca's water system has 82 total violations on record, including 32 health-based violations. 42 remain unresolved. 15 violations were issued in the last 5 years.
Flood & environmental risk
Travis County has experienced 9 federally declared disasters since 2005. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Barton Ck At Lost Ck Blvd Nr Austin, Barton Ck At Loop 360, Austin, Barton Ck Abv Barton Spgs At Austin, Barton Spgs At Austin, W Bouldin Ck At Oltorf Rd, Austin.
Where does Manchaca's water come from?
Manchaca's drinking water comes from groundwater (wells), supplied by 5 water systems serving approximately 2,164 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Barton Ck At Lost Ck Blvd Nr Austin (river), Barton Ck At Loop 360, Austin (river), Barton Ck Abv Barton Spgs At Austin (river), Barton Spgs At Austin (spring), W Bouldin Ck At Oltorf Rd, Austin (river).
What Manchaca residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Manchaca's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Manchaca's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Manchaca
Industrial polluters nearby
Reported releases to surface water by facilities near Manchaca, ranked by pounds discharged annually.
Total reported releases to surface water: 10 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
TEXAS LEHIGH CEMENT CO LP BUDA, TX78610 | Nickel compounds | 8 | 5.4 mi |
CMC STEEL FABRICATORS INC (DBA CMC CAPITOL CITY STEEL) BUDA, TX78610 | Manganese And Manganese Compounds | 2 | 3.3 mi |
ASPHALT INC BUDA CENTEX PLANT BUDA, TX78610 | — | — | 4.8 mi |
CENTEX MATERIALS - BUDA RMX BUDA, TX78610 | — | — | 4.7 mi |
ASPHALT INC. BUDA BUDA, TX78610 | — | — | 5.0 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtTravis County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Travis County has experienced 9 federally declared disasters since 2005. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 2.5 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Manchaca compares by contaminant
Explore where Manchaca ranks among all Texas cities for specific contaminants.
Water source & infrastructure
Where Manchaca's water comes from
Manchaca's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by private ownership and serves approximately 2,164 people through 5 water systems.
Water bodies near Manchaca
Manchaca is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Manchaca
| System Name | PWSID | Population | Source |
|---|---|---|---|
| ARROYO DOBLE WATER SYSTEM | TX2270069 | 945 | GW |
| VILLAGE OF SAN LEANNA | TX2270017 | 522 | SWP |
| SLAUGHTER CREEK ACRES | TX2270042 | 318 | GW |
| MARBRIDGE FOUNDATION | TX2270039 | 247 | GW |
| MYSTIC OAKS WATER | TX2270044 | 132 | GW |
How Manchaca compares
Full Texas rankings →Manchaca's score of 47.9/100 is on par with the average of 46/100 among major Texas cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Texas rankings →About Manchaca, TX
Learn more about your water
Guides and resources related to Manchaca's water quality findings.
Explore water quality across Travis
Frequently asked questions
Is Manchaca, TX tap water safe to drink?
Manchaca's water quality earned a grade of D (47.9/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #805 out of 1067 cities tested in Texas.
What contaminants are in Manchaca's water?
Lead was measured at 2.5 ppb (90th percentile). 82 violations are on record.
How is Manchaca's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Manchaca?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Manchaca's water come from?
Manchaca's water is sourced from Groundwater. The city has 5 water systems serving approximately 2,164 residents.
What health violations has Manchaca's water system had?
Manchaca has 32 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 42 violations remain unresolved.
Is Manchaca's groundwater at risk of contamination?
Manchaca uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 82 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Manchaca's water compare to other cities?
Manchaca ranks #805 out of 1067 cities in Texas (better than 25% of state cities) and #13559 out of 15744 cities nationally (14th percentile). The grade of D reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.