TapSafetyReport
C43/100

MANVILLE WSC — Water Quality Report 2026

Serving 39,648 people · Texas

Water Source
Purchased Surface Water
County
—
System ID
TX2270033
Violations
31

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
chlorate
462.00 µg/L—Above Goal
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

6

Violations (last 5yr)

4

Unresolved

3

Health-Related

TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2025 – September 30, 2025Rule: Stage 2 DBPRVerify on EPA.gov
TIER 3Unresolved

Failed to conduct Level 2 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: June 5, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Failed to conduct Level 1 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 9, 2025 – April 3, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2025 – June 30, 2025Rule: Stage 2 DBPRVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2025 – March 31, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Failed to conduct Level 1 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 16, 2024 – February 20, 2025Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About MANVILLE WSC

Is MANVILLE WSC water safe to drink?

MANVILLE WSC water receives a grade of C (43/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 31 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has MANVILLE WSC detected?

69 contaminants were tested in MANVILLE WSC's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).

Does MANVILLE WSC have any EPA violations?

Yes, MANVILLE WSC has 31 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, Other. 5 are health-based violations.

How many people does MANVILLE WSC serve?

MANVILLE WSC serves approximately 39,648 people, Texas.

What type of water does MANVILLE WSC provide?

MANVILLE WSC sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX2270033.

How does MANVILLE WSC compare to other utilities in Texas?

MANVILLE WSC scores 43/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Texas state page for a full comparison of water systems.