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Tap water quality report

Mt Joy Boro Auth

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
15,261
people served
10
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Ground water under surface influence
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.

10
health-based violations
243
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2007-09-01 → 2007-09-30
MCL Health-based Resolved 2007-09-01 → 2007-09-30
MCL Health-based Resolved 2007-09-01 → 2007-09-30
MCL Health-based Archived 1989-01-01 → 1991-12-31
MCL Health-based Archived 1986-06-23 → 1986-07-22
MCL Health-based Archived 1985-05-06 → 1985-06-05
MCL Health-based Archived 1984-05-31 → 1984-07-30
MCL Health-based Archived 1983-09-01 → 1983-09-30
MCL Health-based Archived 1983-07-28 → 1983-08-27
MCL Health-based Archived 1983-07-14 → 1983-08-13

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0033 µg/L 1/8 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
195 µg/L 15%
of the EPA limit 1300 µg/L
worst single sample: 351 µg/L
111/111 SYR4 2013–2019
Lead
6 µg/L 40%
of the EPA limit 15 µg/L
worst single sample: 9.8 µg/L
82/111 SYR4 2013–2019
Nitrate
6746 µg/L 67%
of the EPA limit 10000 µg/L
worst single sample: 7000 µg/L
78/78 SYR4 2012–2019
Bromodichloromethane
11.16 µg/L
No EPA limit set
worst single sample: 11.7 µg/L
65/65 SYR4 2012–2019
Dibromochloromethane
7.48 µg/L
No EPA limit set
worst single sample: 8.2 µg/L
65/65 SYR4 2012–2019
TTHM
38.04 µg/L 48%
of the EPA limit 80 µg/L
worst single sample: 41.1 µg/L
65/65 SYR4 2012–2019
Chloroform
17.75 µg/L
No EPA limit set
worst single sample: 20.6 µg/L
64/65 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
10.85 µg/L 18%
of the EPA limit 60 µg/L
worst single sample: 14.2 µg/L
51/66 SYR4 2012–2019
Bromoform
5 µg/L
No EPA limit set
worst single sample: 6 µg/L
41/65 SYR4 2012–2019
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Dichloroacetic Acid
5.145 µg/L
No EPA limit set
worst single sample: 5.18 µg/L
11/16 SYR4 2018–2019
Trichloroacetic Acid
1.97 µg/L
No EPA limit set
worst single sample: 2.22 µg/L
11/16 SYR4 2018–2019
Dibromoacetic Acid
1.8205 µg/L
No EPA limit set
worst single sample: 2.02 µg/L
8/16 SYR4 2018–2019
Atrazine
0.6470 µg/L 22%
of the EPA limit 3 µg/L
worst single sample: 0.6900 µg/L
3/12 SYR4 2012–2019
Barium
16.8 µg/L 0.8%
of the EPA limit 2000 µg/L
worst single sample: 17 µg/L
3/3 SYR4 2012–2018
Chromium
2.995 µg/L 3%
of the EPA limit 100 µg/L
worst single sample: 3.1 µg/L
2/3 SYR4 2012–2018
92 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, TotalArsenicBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Scott Kapcsos
Phone
717-653-5938

Frequently asked questions about Mt Joy Boro Auth

Is Mt Joy Boro Auth tap water safe to drink?

EPA monitoring detected 17 contaminants in Mt Joy Boro Auth'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 Mt Joy Boro Auth's water?

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

How many people does Mt Joy Boro Auth serve?

Mt Joy Boro Auth reports serving 15,261 people in Pennsylvania, per its EPA record.

Has Mt Joy Boro Auth had any water quality violations?

The EPA has 243 violations on file for Mt Joy Boro Auth, of which 10 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.