Community Water System · PWS AL0000234
Chilton Water Authority
Thorsby, Alabama 35171 - drinking water served from groundwater sources to 27,681 people, tracked in EPA SDWIS and UCMR5.
- 27,681
- People served
- 63
- EPA violations
- 0
- Health-based
- No PFAS
- UCMR5 result
The verdict
EPA records 63 drinking-water violations at Chilton Water Authority - below the Alabama per-system average.
- 63
- Total EPA violations on record
- 0%
- Health-based (MCL / treatment failure)
- 27,681
- People served by this system
- 0
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Chilton Water Authority
Chilton Water Authority is a local-owned community water system that delivers drinking water to 27,681 residents in Thorsby, Alabama (Chilton County) through 9,227 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 63 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 63 monitoring and reporting violations are on file. The most recent violation on record dates to 1997.
The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 3 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.
Across Alabama, EPA tracks 562 public water systems serving 6,193,356 people, with 40,486 cumulative violations and 3,786 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 72 violations. Statewide, 157 of 306 UCMR5-tested systems have reported PFAS detections (51.3%).
Chilton Water Authority's 63 violations sit below the Alabama average.
All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 9,227
- County
- Chilton
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 63
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| 1,2,4-Trichlorobenzene | MR | 3 | 1997 |
| cis-1,2-Dichloroethylene | MR | 3 | 1997 |
| Xylenes, Total | MR | 3 | 1997 |
| DICHLOROMETHANE | MR | 3 | 1997 |
| o-Dichlorobenzene | MR | 3 | 1997 |
| Vinyl chloride | MR | 3 | 1997 |
| 1,1-Dichloroethylene | MR | 3 | 1997 |
| 1,2-Dichloroethane | MR | 3 | 1997 |
| 1,1,1-Trichloroethane | MR | 3 | 1997 |
| Carbon tetrachloride | MR | 3 | 1997 |
| Trichloroethylene | MR | 3 | 1997 |
| 1,1,2-Trichloroethane | MR | 3 | 1997 |
| Tetrachloroethylene | MR | 3 | 1997 |
| CHLOROBENZENE | MR | 3 | 1997 |
| Toluene | MR | 3 | 1997 |
| p-Dichlorobenzene | MR | 3 | 1997 |
| Styrene | MR | 3 | 1997 |
| Benzene | MR | 3 | 1997 |
| 1,2-Dichloropropane | MR | 3 | 1997 |
| trans-1,2-Dichloroethylene | MR | 3 | 1997 |
| Ethylbenzene | MR | 3 | 1997 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 174 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| NMeFOSAA | 4/1/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTrDA | 4/1/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| 6:2 FTS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 4/1/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHxS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/1/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 4/1/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 4/1/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| NEtFOSAA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 4/1/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFBA | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 4/1/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFPeS | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 4/1/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHpS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 4/1/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 4/1/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/1/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 6:2 FTS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 4/1/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| ADONA | 4/1/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/1/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 4/1/2025 | <3.00 ppt | 3.00 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 Chilton Water Authority.
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 AL0000234 on SDWISSource: EPA SDWIS Federal Reports Search
Alabama Drinking Water Authority
Alabama'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 AL regulator via EPA SDWISViolation 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 |
|---|---|---|---|---|
| 1997 | 1,2,4-Trichlorobenzene | MR | 3 | SDWIS / AL0000234 / 2378 |
| 1997 | cis-1,2-Dichloroethylene | MR | 3 | SDWIS / AL0000234 / 2380 |
| 1997 | Xylenes, Total | MR | 3 | SDWIS / AL0000234 / 2955 |
| 1997 | DICHLOROMETHANE | MR | 3 | SDWIS / AL0000234 / 2964 |
| 1997 | o-Dichlorobenzene | MR | 3 | SDWIS / AL0000234 / 2968 |
| 1997 | Vinyl chloride | MR | 3 | SDWIS / AL0000234 / 2976 |
| 1997 | 1,1-Dichloroethylene | MR | 3 | SDWIS / AL0000234 / 2977 |
| 1997 | 1,2-Dichloroethane | MR | 3 | SDWIS / AL0000234 / 2980 |
| 1997 | 1,1,1-Trichloroethane | MR | 3 | SDWIS / AL0000234 / 2981 |
| 1997 | Carbon tetrachloride | MR | 3 | SDWIS / AL0000234 / 2982 |
| 1997 | Trichloroethylene | MR | 3 | SDWIS / AL0000234 / 2984 |
| 1997 | 1,1,2-Trichloroethane | MR | 3 | SDWIS / AL0000234 / 2985 |
| 1997 | Tetrachloroethylene | MR | 3 | SDWIS / AL0000234 / 2987 |
| 1997 | CHLOROBENZENE | MR | 3 | SDWIS / AL0000234 / 2989 |
| 1997 | Toluene | MR | 3 | SDWIS / AL0000234 / 2991 |
How Chilton Water Authority Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Chilton Water Authority | Alabama avg | Federal benchmark |
|---|---|---|---|
| Total violations | 63 | 72 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 0 | 6.7 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 51.3% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 27,681 | 11,020 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 562 regulated public water systems in Alabama.
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 Chilton Water Authority water safe to drink? ▼
How many people does Chilton Water Authority serve? ▼
What type of violations does Chilton Water Authority have? ▼
Has PFAS been detected in Chilton Water Authority water? ▼
What water source does Chilton Water Authority use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
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.