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Tap water quality report

Denver Boro

EPA monitoring tested this supplier for 110 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
20
detected
3,861
people served
3
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Surface water
Ownership
Local government
Counties served
Lancaster

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

3
health-based violations
102
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-04-01
MCL Health-based Resolved 1996-01-01 → 1996-12-31
TT Health-based Resolved 1995-10-01 → 1995-10-31
MR Monitoring Archived 2026-01-01 → 2026-03-31
MR Monitoring Archived 2026-01-01 → 2026-03-31
MR Monitoring Resolved 2024-12-01 → 2024-12-31
MR Monitoring Resolved 2024-12-01 → 2024-12-31
MR Monitoring Resolved 2023-10-01 → 2023-12-31
MR Monitoring Resolved 2023-10-01 → 2023-12-31
MR Monitoring Resolved 2023-10-01 → 2023-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0043 µg/L 2/6 2025
Pfpea 0.0030 µg/L 1/6 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
950 µg/L 73%
of the EPA limit 1300 µg/L
worst single sample: 1250 µg/L
171/171 SYR4 2013–2019
Lead
8 µg/L 53%
of the EPA limit 15 µg/L
worst single sample: 24 µg/L
62/171 SYR4 2013–2019
Bromodichloromethane
7.63 µg/L
No EPA limit set
worst single sample: 10.9 µg/L
55/56 SYR4 2012–2019
TTHM
26.61 µg/L 33%
of the EPA limit 80 µg/L
worst single sample: 36.2 µg/L
55/58 SYR4 2012–2019
Dibromochloromethane
5.135 µg/L
No EPA limit set
worst single sample: 7.1 µg/L
54/56 SYR4 2012–2019
Chloroform
12.88 µg/L
No EPA limit set
worst single sample: 16.8 µg/L
53/56 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
13.02 µg/L 22%
of the EPA limit 60 µg/L
worst single sample: 16 µg/L
48/56 SYR4 2012–2019
Nitrate
4300.5 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4460 µg/L
32/32 SYR4 2012–2019
Bromoform
2.495 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
22/56 SYR4 2012–2019
Barium
170 µg/L 8.5%
of the EPA limit 2000 µg/L
worst single sample: 180 µg/L
11/11 SYR4 2012–2019
Dichloroacetic Acid
10.86 µg/L
No EPA limit set
worst single sample: 11.4 µg/L
10/10 SYR4 2018–2019
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Trichloroacetic Acid
4.624 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
9/10 SYR4 2018–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 6/11 SYR4 2012–2019
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 5/11 SYR4 2012–2019
Dibromoacetic Acid
2.178 µg/L
No EPA limit set
worst single sample: 2.22 µg/L
4/10 SYR4 2018–2019
Combined Uranium
1.5347 µg/L 5.1%
of the EPA limit 30 µg/L
 1/1 SYR4 2017
Lithium
9.39 µg/L
No EPA limit set
 1/6 UCMR-5 2025
90 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MICHAEL HESSION
Phone
717-336-2831

Frequently asked questions about Denver Boro

Is Denver Boro tap water safe to drink?

EPA monitoring detected 20 contaminants in Denver Boro's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Denver Boro's water?

EPA monitoring detected Copper, Lead, Bromodichloromethane, TTHM, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Denver Boro serve?

Denver Boro reports serving 3,861 people in Pennsylvania, per its EPA record.

Has Denver Boro had any water quality violations?

The EPA has 102 violations on file for Denver Boro, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.