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Community Water System · PWS TX1980002

City of Calvert

Calvert, Texas 77837-0505 - drinking water served from groundwater sources to 962 people, tracked in EPA SDWIS and UCMR5.

962
People served
141
EPA violations
15
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 141 drinking-water violations at City of Calvert, 11% of them health-based - above the Texas per-system average.

141
Total EPA violations on record
11%
Health-based (MCL / treatment failure)
962
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: City of Calvert

City of Calvert is a local-owned community water system that delivers drinking water to 962 residents in Calvert, Texas (Robertson County) through 549 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 141 total violations for this system , of which 15 (11%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 72 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Public Notice, recorded in 43 violations (Other). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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. Statewide, 610 of 1,147 UCMR5-tested systems have reported PFAS detections (53.2%).

City of Calvert's 141 violations sit above the Texas average.

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
962
Total Violations
141
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
549
County
Robertson
School/Daycare
No
MCL Violations
10
Monitoring Violations
72
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 43 2024
E. COLI MR 40 2017
Chlorine MR 13 2017
Coliform (TCR) MR 12 2015
Coliform (TCR) MCL 10 2015
Revised Total Coliform Rule TT 5 2017
Consumer Confidence Rule Other 4 2016
Lead and Copper Rule MR 4 2014
Revised Total Coliform Rule MON 3 2023

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 29 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 4/15/2025 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFNA 4/15/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 4/15/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFOS 4/15/2025 <4.00 ppt 4.00 ppt Not Detected
PFUnA 4/15/2025 <2.00 ppt 2.00 ppt Not Detected
PFPeA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFTA 4/15/2025 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 4/15/2025 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFMBA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/15/2025 <2.00 ppt 2.00 ppt Not Detected
NMeFOSAA 4/15/2025 <6.00 ppt 6.00 ppt Not Detected
ADONA 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/15/2025 <20.00 ppt 20.00 ppt Not Detected
PFBA 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/15/2025 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 4/15/2025 <5.00 ppt 5.00 ppt Not Detected
PFMPA 4/15/2025 <4.00 ppt 4.00 ppt Not Detected

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 Calvert.

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 TX1980002 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 Calvert 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
2024 Public Notice Other 43 SDWIS / TX1980002 / 7500
2023 Revised Total Coliform Rule MON 3 SDWIS / TX1980002 / 8000
2017 E. COLI MR 40 SDWIS / TX1980002 / 3014
2017 Chlorine MR 13 SDWIS / TX1980002 / 0999
2017 Revised Total Coliform Rule TT 5 SDWIS / TX1980002 / 8000
2016 Consumer Confidence Rule Other 4 SDWIS / TX1980002 / 7000
2015 Coliform (TCR) MR 12 SDWIS / TX1980002 / 3100
2015 Coliform (TCR) MCL 10 SDWIS / TX1980002 / 3100
2014 Lead and Copper Rule MR 4 SDWIS / TX1980002 / 5000

How City of Calvert Compares

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

Metric City of Calvert Texas avg Federal benchmark
Total violations 141 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 22.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 53.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 962 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is City of Calvert water safe to drink? ▼
City of Calvert (PWS ID: TX1980002) has 141 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 962 people using Groundwater sources.
How many people does City of Calvert serve? ▼
City of Calvert serves 962 people in Calvert, Texas. It is a Local-owned system using Groundwater water sources with 549 service connections.
What type of violations does City of Calvert have? ▼
City of Calvert has 141 total violations: 15 health-based violations (MCL exceedances or treatment failures), 72 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in City of Calvert water? ▼
No. City of Calvert was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does City of Calvert use? ▼
City of Calvert 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.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

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

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.