Drinking water quality · 2024
· Verified
What's in Town of Knightdale, NC tap water
16 contaminants were measured in the Town of Knightdale, NC water system's 2024 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 16
- Over federal limit
- 1
- Approaching the limit
- 1
- Worst contaminant
- PFOS
- Service area
- NC
Where your water comes from · EPA SDWIS
Town of Knightdale, NC's drinking water comes from ground water, drawn from 3 sources.
Source
- WELL · 3
Treatment
- TREATMENT_PLT_WELL #1-2
- TREATMENT_PLT_#3
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
2 contaminants historically over EPA limits in Town of Knightdale, NC
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
GROSS ALPHA worst: 2015 | 108 pCi/L 7.2× | 15 pCi/L | '15'16'19 |
DICHLOROMETHANE worst: 2014 | 0.0055 mg/L 1.1× | 0.005 mg/L | '14 |
RADIUM 226 228 worst: 2015 | 2.7 pCi/L within near national p90 | 5 pCi/L | '15'16'17'18'19 |
NITRATE worst: 2017 | 1.1 mg/L within | 10 mg/L | '17 |
NITRATE NITRITE worst: 2017 | 1.1 mg/L within | 10 mg/L | '17 |
FLUORIDE worst: 2017 | 0.37 mg/L within | 4 mg/L | '12'13'14'17 |
HAA5 worst: 2014 | 0.0042 mg/L within | 0.06 mg/L | '14 |
TTHM worst: 2018 | 0.001 mg/L within | 0.08 mg/L | '18 |
URANIUM worst: 2015 | 0.268 ug/L within 12.6× the national p90 | 30 ug/L | '13'14'15'16 |
COPPER worst: 2017 | 0.097 mg/L below national p90 | — | '17 |
LEAD worst: 2017 | 0.005 mg/L | — | '17 |
DCAA worst: 2014 | 0.0042 mg/L | — | '14 |
CHLOROFORM worst: 2018 | 0.001 mg/L | — | '18 |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 4.57Reported level8/1/2024 EMJWTP Raw | 4MCL | At or above the limit |
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 3.35Reported level8/1/2024 DEBWTP Raw | 4MCL | Approaching the limit |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 1.52Reported level2/29/2024 DEBWTP Raw | 10MCL | Within the limit |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detectedReported level8/1/2024 EMJWTP Finished | 10MCL | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detectedReported level8/1/2024 EMJWTP Raw | 10MCL | None detected |
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | 3.14Reported level8/1/2024 DEBWTP Finished | None set | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 2.75 mg/LRunning annual avgSystem-wide | 4 mg/LMRDLG | Within the limit |
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 2.55 mg/LRunning annual avgSystem-wide | 4 mg/LMRDLG | Within the limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Simazine | 0–0.1 ug/LRangeSystem-wide | 4 ug/LMCLG | Within the limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 1.5Running annual avgSystem-wide | None set | Detected — no federal limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.11 NTUReported levelSystem-wide | None set | Detected — no federal limit |
People also ask about Town of Knightdale, NC's water
+Is Town of Knightdale, NC tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Town of Knightdale, NC water utility lists 1 contaminant at or above the federal limit: PFOS. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Town of Knightdale, NC tap water?
16 contaminants were measured in Town of Knightdale, NC's 2024 Consumer Confidence Report, spanning pfas ("forever chemicals"), disinfectants, and disinfection byproducts. 13 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in Town of Knightdale, NC tap water?
One contaminant in Town of Knightdale, NC's 2024 report sits at or above the federal limit: PFOS (1.1× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Town of Knightdale, NC tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is PFOS, at 1.1× the federal threshold. It belongs to the pfas ("forever chemicals") family of contaminants.
+Are any contaminants in Town of Knightdale, NC tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: PFOA. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from Town of Knightdale, NC's 2024 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Town of Knightdale, NC's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2024 report; a new report will replace it once the utility publishes its next annual update.