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City of Mansfield Water SystemWater quality report

Standards for what was found here

5358
Serves
7,512
Connections
2,504
Water source
Surface water
Based in
Mansfield, LA
County
De Soto Parish
Owner
Local government
The ZIP code it serves

71052

PWSID LA1031009 · EPA data

Read this first

  • Copper In the latest period, 9 in 10 homes sampled were at or below 1.6 ppm, above the 1.3 ppm action level.
  • Lead In the latest period, 9 in 10 homes sampled were at or below 1.0 ppb, below the 15 ppb action level. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

23 health-based violations since 2016. Details are below.

What handles it

What was found, stop by stop

  • Below the health goal
  • Above the health goal
  • Above the legal limit
  • No federal data

  1. At the source

    EPA UCMR 5 sampled this utility for 29 PFAS and lithium from Jan. 8, 2025 to Oct. 15, 2025. Each tick under a result’s line is one sample where it was found, dated when you point at it.

  2. Also found, with no federal limit

    EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.

    CompoundHighest sampleFound inCertification claim
    PFPeA3.5 ppt1 of 4None covers it

  3. In treatment

    No federal results for this stop. Disinfection byproduct, chlorine and fluoride levels are in City of Mansfield Water System’s own annual report, which it must send you every year.

  4. In the pipes

    Lead and copper, from the homes the utility samples. Your own service line, solder and fixtures decide yours.

  5. Copper

    Above the action level

    1.6ppm

    90th percentile, 2017

    In the latest period, 9 in 10 homes sampled were at or below 1.6 ppm, above the 1.3 ppm action level.

    EPA SDWIS, lead and copper monitoring periods ending 2009 to 2017. The line stops at the latest period; each tick under it is an earlier one.

  6. Lead

    Above the health goal

    1.0ppb

    90th percentile, 2021 to 2023

    In the latest period, 9 in 10 homes sampled were at or below 1.0 ppb, below the 15 ppb action level. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

    EPA SDWIS, lead and copper monitoring periods ending 2016 to 2023. The line stops at the latest period; each tick under it is an earlier one.

  7. At your tap

    The last stretch is your own plumbing. A certified lab test is the only way to know what reaches your glass. Lead in your water: what to do

Tested and not found

Below EPA’s minimum reporting level in every sample taken from Jan. 8, 2025 to Oct. 15, 2025. Not found means not measured above that level, which is not the same as zero.

All 29 compounds tested and not found
  • 11Cl-PF3OUdS
  • 4:2 FTS
  • 6:2 FTS
  • 8:2 FTS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • Lithium
  • NEtFOSAA
  • NFDHA
  • NMeFOSAA
  • PFBA
  • PFBS
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpA
  • PFHpS
  • PFHxA
  • PFHxS
  • PFMBA
  • PFMPA
  • PFNA
  • PFOA
  • PFOS
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)Feb. 1, 2026 to Feb. 28, 2026—Archived
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)March 1, 2025 to March 31, 2025—Resolved
Interim Enhanced Surface Water Treatment RuleToo many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR)Feb. 1, 2025 to Feb. 28, 2025—Resolved
Interim Enhanced Surface Water Treatment RuleToo many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR)Jan. 1, 2025 to Jan. 31, 2025—Resolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)Nov. 1, 2024 to Nov. 30, 2024—Resolved
Interim Enhanced Surface Water Treatment RuleToo many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR)Nov. 1, 2024 to Nov. 30, 2024—Resolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)Oct. 1, 2024 to Oct. 31, 2024—Resolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)Aug. 1, 2024 to Aug. 31, 2024—Resolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)July 1, 2024 to July 31, 2024—Resolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2024 to June 30, 20240.11 MG/LResolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)March 1, 2024 to March 31, 2024—Resolved
Interim Enhanced Surface Water Treatment RuleOne cloudiness reading was above the maximum allowed.EPA: Single Turbidity Exceed (Enhanced SWTR)Jan. 1, 2024 to Jan. 31, 2024—Resolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2024 to March 31, 20240.11 MG/LResolved
Interim Enhanced Surface Water Treatment RuleToo many readings in a month showed cloudiness above the filtration standard.EPA: Monthly Turbidity Exceed (Enhanced SWTR)Jan. 1, 2024 to Jan. 31, 2024—Resolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2023 to Dec. 31, 20230.1 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2023 to Sept. 30, 20230.097 MG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2018 to June 30, 201884 UG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageOct. 1, 2017 to Dec. 31, 201796 UG/LResolved
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalOct. 1, 2017 to Dec. 31, 2017—Archived
Total organic carbonNot enough organic matter was removed. It reacts with disinfectant to form byproducts.EPA: Treatment Technique Precursor RemovalJuly 1, 2017 to Sept. 30, 2017—Resolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJuly 1, 2017 to Sept. 30, 201791 UG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageApril 1, 2017 to June 30, 201785 UG/LResolved
TTHMThe running average was above the legal limit.EPA: Maximum Contaminant Level Violation, AverageJan. 1, 2017 to March 31, 201786 UG/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record.

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claims: Copper Reduction, Lead Reduction

    For: Copper, Lead

  • NSF/ANSI 58

    Claims: Copper Reduction, Lead Reduction

    For: Copper, Lead

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Compare five-year costs

Filters with those claims on a certifier’s listing

TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

What this report cannot tell you

  • Levels of everything else. Federal bulk data carries results for PFAS, lithium, lead and copper, and violations for the rest. Nitrate, arsenic, disinfection byproducts and other levels are in City of Mansfield Water System’s own annual report, which it must send you every year.
  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
  • Anything after the latest data. SDWIS data is from 2026 Q2; UCMR 5 samples are from Jan. 8, 2025 to Oct. 15, 2025.

Other Louisiana utilities

All Louisiana utilities

Sources

What to do next

  1. Start with Copper

    What each marked result does to health, where it comes from, and the certification claim that addresses it.

  2. Read the utility’s own report

    City of Mansfield Water System must send you a water quality report every year. It lists nitrate, arsenic and byproduct levels this page cannot.

  3. Test your own tap for lead

    Your service line, solder and fixtures decide the lead at your faucet, not the utility’s average.

  4. Compare five-year costs

    What the filters certified for these results cost over five years, cartridges included.