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Community Water System · PWS MS0230065

Hancock County Water & Sewer

Kiln, Mississippi 39556-8037 - drinking water served from groundwater sources to 3,254 people, tracked in EPA SDWIS and UCMR5.

3,254
People served
363
EPA violations
79
Health-based
Untested
UCMR5 result

The verdict

EPA records 363 drinking-water violations at Hancock County Water & Sewer, 22% of them health-based - below the Mississippi per-system average.

363
Total EPA violations on record
22%
Health-based (MCL / treatment failure)
3,254
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hancock County Water & Sewer

Hancock County Water & Sewer is a local-owned community water system that delivers drinking water to 3,254 residents in Kiln, Mississippi (Hancock County) through 1,528 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 363 total violations for this system , of which 79 (22%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 272 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Combined Uranium, recorded in 86 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 Mississippi, EPA tracks 1,185 public water systems serving 3,286,781 people, with 499,292 cumulative violations and 10,292 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 421.3 violations. Statewide, 160 of 238 UCMR5-tested systems have reported PFAS detections (67.2%).

Hancock County Water & Sewer's 363 violations sit below the Mississippi 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
3,254
Total Violations
363
Health-Based Violations
79
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,528
County
Hancock
School/Daycare
No
MCL Violations
79
Monitoring Violations
272
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MR 86 2012
Radium-226 MR 60 2012
Radium-228 MR 60 2012
TTHM MCL 39 2019
Total Haloacetic Acids (HAA5) MCL 38 2018
Combined Radium (-226 and -228) MR 28 2008
Gross Alpha, Excl. Radon and U MR 28 2008
Consumer Confidence Rule Other 4 2007
Chlorine MR 4 2023
Revised Total Coliform Rule MON 4 2023
Public Notice Other 4 2019
Coliform (TCR) MCL 2 2006
CYANIDE MR 2 2003

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 Hancock County Water & Sewer.

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 MS0230065 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Mississippi Drinking Water Authority

Mississippi's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find MS regulator via EPA SDWIS

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
2023 Chlorine MR 4 SDWIS / MS0230065 / 0999
2023 Revised Total Coliform Rule MON 4 SDWIS / MS0230065 / 8000
2019 TTHM MCL 39 SDWIS / MS0230065 / 2950
2019 Public Notice Other 4 SDWIS / MS0230065 / 7500
2018 Total Haloacetic Acids (HAA5) MCL 38 SDWIS / MS0230065 / 2456
2012 Combined Uranium MR 86 SDWIS / MS0230065 / 4006
2012 Radium-226 MR 60 SDWIS / MS0230065 / 4020
2012 Radium-228 MR 60 SDWIS / MS0230065 / 4030
2008 Combined Radium (-226 and -228) MR 28 SDWIS / MS0230065 / 4010
2008 Gross Alpha, Excl. Radon and U MR 28 SDWIS / MS0230065 / 4000
2007 Consumer Confidence Rule Other 4 SDWIS / MS0230065 / 7000
2006 Coliform (TCR) MCL 2 SDWIS / MS0230065 / 3100
2003 CYANIDE MR 2 SDWIS / MS0230065 / 1024

How Hancock County Water & Sewer Compares

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

Metric Hancock County Water & Sewer Mississippi avg Federal benchmark
Total violations 363 421.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 79 8.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 67.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,254 2,774 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,185 regulated public water systems in Mississippi.

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 Hancock County Water & Sewer water safe to drink? ▼
Hancock County Water & Sewer (PWS ID: MS0230065) has 363 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,254 people using Groundwater sources.
How many people does Hancock County Water & Sewer serve? ▼
Hancock County Water & Sewer serves 3,254 people in Kiln, Mississippi. It is a Local-owned system using Groundwater water sources with 1,528 service connections.
What type of violations does Hancock County Water & Sewer have? ▼
Hancock County Water & Sewer has 363 total violations: 79 health-based violations (MCL exceedances or treatment failures), 272 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hancock County Water & Sewer water? ▼
No PFAS testing data is available for Hancock County Water & Sewer under the EPA's UCMR5 monitoring program.
What water source does Hancock County Water & Sewer use? ▼
Hancock County Water & Sewer 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. 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.