Drinking water quality · 2024
· Verified
What's in Boonsboro Keedysville, MD tap water
36 contaminants were measured in the Boonsboro Keedysville, MD water system's 2024 annual report. Each is shown below against its federal limit — 18 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 36
- Over federal limit
- 18
- Approaching the limit
- 2
- Worst contaminant
- Nitrite
- Service area
- MD
- NitriteInorganic chemicals · Range0.0021–6 mg/Llimit 1 mg/L · 6.0× the limit
- Perfluoroundecanoic acid (PFUnA)PFAS ("forever chemicals") · Reported level2058–8limit 2 · 4.0× the limit
- Perfluoroheptanoic acidPFAS ("forever chemicals") · Reported level375–9limit 3 · 3.0× the limit
- Perfluoroheptanesulfonic acid (PFHpS)PFAS ("forever chemicals") · Reported level375–8limit 3 · 2.7× the limit
- Perfluorohexanoic acidPFAS ("forever chemicals") · Reported level7.4 ng/Llimit 3 ng/L · 2.5× the limit
- Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)PFAS ("forever chemicals") · Reported level113507–7limit 3 · 2.3× the limit
- Perfluorobutanesulfonic acidPFAS ("forever chemicals") · Reported level5.8 ng/Llimit 3 ng/L · 1.9× the limit
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)PFAS ("forever chemicals") · Reported level763051–9limit 5 · 1.8× the limit
- Perfluoro-4-methoxybutanoic acid (PFMBA)PFAS ("forever chemicals") · Reported level863090–5limit 3 · 1.7× the limit
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)PFAS ("forever chemicals") · Reported level2355–9limit 6 · 1.5× the limit
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)PFAS ("forever chemicals") · Reported level919005–4limit 3 · 1.3× the limit
- Perfluorohexanesulfonic acidPFAS ("forever chemicals") · Reported level355–4limit 3 · 1.3× the limit
- PFOAPFAS ("forever chemicals") · Reported level5.1 ng/Llimit 4 ng/L · 1.3× the limit
- Hexafluoropropylene oxide dimer acidPFAS ("forever chemicals") · Reported level13252–6limit 5 · 1.2× the limit
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)PFAS ("forever chemicals") · Reported level2991–6limit 5 · 1.2× the limit
- Perfluorotridecanoic acid (PFTrDA)PFAS ("forever chemicals") · Reported level72629–8limit 7 · 1.1× the limit
- Perfluoropentanoic acidPFAS ("forever chemicals") · Reported level3.2 ng/Llimit 3 ng/L · 1.1× the limit
- Perfluoropentanesulfonic acid (PFPeS)PFAS ("forever chemicals") · Reported level2706–4limit 4 · 1.0× the limit
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound above EPA limits in Boonsboro Keedysville, MD
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFOA (Perfluorooctanoic acid)
● Over EPA limit (1.7×)below national p90 (13.649999999999999 ng/L across detecting U.S. systems)
PFHxS (Perfluorohexane sulfonic acid)
● Below limitbelow national p90 (12.049999999999997 ng/L across detecting U.S. systems)
PFHxA
● Detected (no federal limit)near national p90 (12.190000000000003 ng/L across detecting U.S. systems)
PFPeA
● Detected (no federal limit)below national p90 (15.95999999999999 ng/L across detecting U.S. systems)
PFBS
● Detected (no federal limit)near national p90 (13.909999999999979 ng/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Boonsboro Keedysville, MD's drinking water comes from ground water under the influence of surface water, drawn from 6 sources.
Source
- GRAYSTONE WELL 8 WA812325
- KEEDYSVILLE SPRING GU
- SCHAFER PARK WELL WA940902
- WARRENFELTZ SPRING GU
- + 2 more
Treatment
- WTP 1- BOONSBORO PLANT
- WTP 3- KEEDYSVILLE PLANT
- WTP 2- WELL 8
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
1 contaminant historically over EPA limits in Boonsboro Keedysville, MD
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 BETA worst: 2012 | 4.2 mrem/yr 1.1× | 4 mrem/yr | '12 |
NITRATE worst: 2018 | 4.9 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2018 | 4.9 mg/L within | 10 mg/L | '14'15'16'17'18'19 |
RADIUM 226 228 worst: 2015 | 2 pCi/L within below national p90 | 5 pCi/L | '12'15 |
GROSS ALPHA worst: 2015 | 5.2 pCi/L within | 15 pCi/L | '12'15 |
HAA5 worst: 2015 | 0.0162 mg/L within | 0.06 mg/L | '12'13'14'15'17'18'19 |
TTHM worst: 2017 | 0.0191 mg/L within | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
FLUORIDE worst: 2015 | 0.57 mg/L within | 4 mg/L | '12'13'15'16'18'19 |
BARIUM worst: 2018 | 0.07 mg/L within below national p90 | 2 mg/L | '18 |
CHROMIUM worst: 2018 | 0.0022 mg/L within below national p90 | 0.1 mg/L | '18 |
XYLENES TOTAL worst: 2013 | 0.0007 mg/L within | 10 mg/L | '13 |
DBAA worst: 2012 | 0.00058 mg/L | — | '12'13 |
DCAA worst: 2012 | 0.00327 mg/L | — | '12'13'15 |
TCAA worst: 2012 | 0.00104 mg/L | — | '12'13 |
BROMODICHLOROMETHANE worst: 2012 | 0.00294 mg/L | — | '12'13'14'15 |
CHLOROFORM worst: 2012 | 0.00644 mg/L | — | '12'13'15 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.00149 mg/L | — | '12'13'14'15'19 |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | 0.0021–6 mg/LRangeSystem-wide | 1 mg/LMCL | At or above the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | 2058–8Reported levelCasrn | 2MCL | At or above the limit |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | 375–9Reported levelCasrn | 3MCL | At or above the limit |
| Perfluoroheptanesulfonic acid (PFHpS)Perfluoroheptanesulfonic acid, a PFAS 'forever chemical.' | 375–8Reported levelCasrn | 3MCL | At or above the limit |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)Perfluoro(2-ethoxyethane)sulfonic acid, a PFAS-related compound. | 113507–7Reported levelCasrn | 3MCL | At or above the limit |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | 763051–9Reported levelCasrn | 5MCL | At or above the limit |
| Perfluoro-4-methoxybutanoic acid (PFMBA)Perfluoro-4-methoxybutanoic acid, a PFAS-related compound. | 863090–5Reported levelCasrn | 3MCL | At or above the limit |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)N-methyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | 2355–9Reported levelCasrn | 6MCL | At or above the limit |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | 919005–4Reported levelCasrn | 3MCL | At or above the limit |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | 13252–6Reported levelCasrn | 5MCL | At or above the limit |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)N-ethyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | 2991–6Reported levelCasrn | 5MCL | At or above the limit |
| Perfluorotridecanoic acid (PFTrDA)Perfluorotridecanoic acid, a longer-chain PFAS 'forever chemical.' | 72629–8Reported levelCasrn | 7MCL | At or above the limit |
| Perfluoropentanesulfonic acid (PFPeS)Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' | 2706–4Reported levelCasrn | 4MCL | At or above the limit |
| Perfluorotetradecanoic acid (PFTeDA)Perfluorotetradecanoic acid, a longer-chain PFAS 'forever chemical.' | 376–7Reported levelCasrn | 8MCL | Approaching the limit |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 375–4Reported levelCasrn | 5MCL | Approaching the limit |
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | 335–2Reported levelCasrn | 3MCL | Within the limit |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | 756426–1Reported levelCasrn | 2MCL | Within the limit |
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | 307–1Reported levelCasrn | 3MCL | Within the limit |
| Nonafluoro-3,6-dioxaheptanoic acidNonafluoro-3,6-dioxaheptanoic acid, a PFAS-related compound. | 151772–6Reported levelCasrn | 20MCL | Within the limit |
| Perfluoro-3-methoxypropanoic acid (PFMPA)Perfluoro-3-methoxypropanoic acid, a PFAS-related compound. | 377–1Reported levelCasrn | 4MCL | Within the limit |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | 375–1Reported levelCasrn | 4MCL | Within the limit |
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 1763–1Reported levelCasrn | 4MCL | Within the limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 1 mg/LRunning annual avgSystem-wide | 4 mg/LMRDL | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.9 pCi/LMaximumHighe st Value | 5 pCi/LMCL | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.147 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | Not detected ug/L90th percentileAt the tap | 15 ug/LAction level | Within the limit |
People also ask about Boonsboro Keedysville, MD's water
+Is Boonsboro Keedysville, MD tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Boonsboro Keedysville, MD water utility lists 18 contaminants at or above the federal limit: Nitrite, Perfluoroundecanoic acid (PFUnA), Perfluoroheptanoic acid, Perfluoroheptanesulfonic acid (PFHpS), Perfluorohexanoic acid, Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA), Perfluorobutanesulfonic acid, 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS), Perfluoro-4-methoxybutanoic acid (PFMBA), N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA), 4,8-Dioxa-3H-perfluorononanoic acid (ADONA), Perfluorohexanesulfonic acid, PFOA, Hexafluoropropylene oxide dimer acid, N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA), Perfluorotridecanoic acid (PFTrDA), Perfluoropentanoic acid, and Perfluoropentanesulfonic acid (PFPeS). 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 Boonsboro Keedysville, MD tap water?
36 contaminants were measured in Boonsboro Keedysville, MD's 2024 Consumer Confidence Report, spanning pfas ("forever chemicals"), inorganic chemicals, and metals. 36 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 Boonsboro Keedysville, MD tap water?
18 contaminants in Boonsboro Keedysville, MD's 2024 report sit at or above the federal limit: Nitrite (6.0× the limit); Perfluoroundecanoic acid (PFUnA) (4.0× the limit); Perfluoroheptanoic acid (3.0× the limit); Perfluoroheptanesulfonic acid (PFHpS) (2.7× the limit); Perfluorohexanoic acid (2.5× the limit); Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) (2.3× the limit); Perfluorobutanesulfonic acid (1.9× the limit); 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) (1.8× the limit); Perfluoro-4-methoxybutanoic acid (PFMBA) (1.7× the limit); N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) (1.5× the limit); 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) (1.3× the limit); Perfluorohexanesulfonic acid (1.3× the limit); PFOA (1.3× the limit); Hexafluoropropylene oxide dimer acid (1.2× the limit); N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) (1.2× the limit); Perfluorotridecanoic acid (PFTrDA) (1.1× the limit); Perfluoropentanoic acid (1.1× the limit); Perfluoropentanesulfonic acid (PFPeS) (1.0× 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 Boonsboro Keedysville, MD tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Nitrite, at 6.0× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Are any contaminants in Boonsboro Keedysville, MD tap water approaching the federal limit?
2 contaminants are between 80% and 100% of the federal limit in this report: Perfluorotetradecanoic acid (PFTeDA) and PFBA. 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 Boonsboro Keedysville, MD'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 Boonsboro Keedysville, MD'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.