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CITY OF ALTO

PWS ID: TX0370001 · ALTO, Texas 75925-0447

CITY OF ALTO serves 1,225 people in ALTO, Texas using Groundwater water sources. It has 285 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CITY OF ALTO

CITY OF ALTO is a local-owned community water system that delivers drinking water to 1,225 residents in ALTO, Texas (Cherokee County) through 587 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 285 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 234 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Chlorine, recorded in 75 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. CITY OF ALTO's 285 violations sit above the Texas average. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
1,225
Total Violations
285
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
587
County
Cherokee
School/Daycare
No
MCL Violations
0
Monitoring Violations
234
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 75 2021
Lead and Copper Rule MR 43 2025
Public Notice Other 31 2025
Revised Total Coliform Rule MON 12 2019
Consumer Confidence Rule Other 12 2020
Coliform (TCR) MR 10 2013
E. COLI MR 8 2013
Methoxychlor MR 4 2008
Di(2-ethylhexyl) adipate MR 4 2008
Di(2-ethylhexyl) phthalate MR 4 2008
Hexachlorocyclopentadiene MR 4 2008
Atrazine MR 4 2008
LASSO MR 4 2008
Benzo(a)pyrene MR 4 2008
Pentachlorophenol MR 4 2008
Chlordane MR 4 2008
Endrin MR 4 2008
BHC-GAMMA MR 4 2008
Toxaphene MR 4 2008
Heptachlor epoxide MR 4 2008
HEXACHLOROBENZENE MR 4 2008
Heptachlor MR 4 2008
Simazine MR 4 2008
Coliform (TCR) Other 2 1992
Nitrate MR 1 2010
cis-1,2-Dichloroethylene MR 1 2005
Xylenes, Total MR 1 2005
p-Dichlorobenzene MR 1 2005
trans-1,2-Dichloroethylene MR 1 2005
1,2-Dichloroethane MR 1 2005

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for CITY OF ALTO.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID TX0370001 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Texas Drinking Water Authority

Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch is the primacy agency that licenses and inspects CITY OF ALTO under EPA-delegated authority.

Open TX regulator portal

Source: Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Lead and Copper Rule MR 43 SDWIS / TX0370001 / 5000
2025 Public Notice Other 31 SDWIS / TX0370001 / 7500
2021 Chlorine MR 75 SDWIS / TX0370001 / 0999
2020 Consumer Confidence Rule Other 12 SDWIS / TX0370001 / 7000
2019 Revised Total Coliform Rule MON 12 SDWIS / TX0370001 / 8000
2013 Coliform (TCR) MR 10 SDWIS / TX0370001 / 3100
2013 E. COLI MR 8 SDWIS / TX0370001 / 3014
2010 Nitrate MR 1 SDWIS / TX0370001 / 1040
2008 Methoxychlor MR 4 SDWIS / TX0370001 / 2015
2008 Di(2-ethylhexyl) adipate MR 4 SDWIS / TX0370001 / 2035
2008 Di(2-ethylhexyl) phthalate MR 4 SDWIS / TX0370001 / 2039
2008 Hexachlorocyclopentadiene MR 4 SDWIS / TX0370001 / 2042
2008 Atrazine MR 4 SDWIS / TX0370001 / 2050
2008 LASSO MR 4 SDWIS / TX0370001 / 2051
2008 Benzo(a)pyrene MR 4 SDWIS / TX0370001 / 2306

How CITY OF ALTO Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric CITY OF ALTO Texas avg Federal benchmark
Total violations 285 101.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 22.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 93.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,225 4,524 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is CITY OF ALTO water safe to drink? ▼
CITY OF ALTO (PWS ID: TX0370001) has 285 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,225 people using Groundwater sources.
How many people does CITY OF ALTO serve? ▼
CITY OF ALTO serves 1,225 people in ALTO, Texas. It is a Local-owned system using Groundwater water sources with 587 service connections.
What type of violations does CITY OF ALTO have? ▼
CITY OF ALTO has 285 total violations: 0 health-based violations (MCL exceedances or treatment failures), 234 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CITY OF ALTO water? ▼
No PFAS testing data is available for CITY OF ALTO under the EPA's UCMR5 monitoring program.
What water source does CITY OF ALTO use? ▼
CITY OF ALTO uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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